Answers
Answer:
B. {( -1,-2 ), ( -3,-2 ), ( -5,4 ), ( 2,0 ), ( 3,3 ), ( 4,5 ), ( 6,-4 )}
Explanation:
Related Questions
How are people cooperating to reduce environmental damage?
Answers
People worldwide are trying to commit to the following objectives: a) drastic reductions in green house gas emissions; b) research and design of innovative approaches to tackle the water crisis worldwide; c) implementation of friendly energy sources with the environment (such as eolic, solar or geothermic energy); d) economic support from the richest countries to the low developed countries to adopt alternative energies (c)), as fast as they can (these energies are pretty expensive); e) research and design to improve crop production with less resources, in order to increase production with less environmental damage; and f) commit to protect forests and stop deforestation.
Please answer this I have to get done fast ! ……………………………………….
Answers
Answer:
c) The caterpillar is a herbivore
Explanation:
The caterpillar eats the flower, the frog eats the caterpillar, the snake eats the frog and the owl eats the snake. The is a food chain. If you take one animal out it would affect them all.
What is meant by the term insulin resistance?
Answers
Answer:
The cells in the body don't respond properly to the insulin hormone. This causes a buildup in glucose in the blood, which can progress to diabetes.
The bicondylar angle positions the center of mass above the base of support during the single-support phase of bipedal locomotion.
A. True
B. False
Answers
Answer:
The bicondylar angle positions the center of mass above the base of support during the single-support phase of bipedal locomotion.
A. True
Explanation:
The bicondylar angle is the functional angle between the diaphysis of the femur, perpendicular to the intercondylar plane. Very unique to humans, this angle places the knee and the foot under the body's center of gravity during a single support phase of locomotion or gait. With hip joints set lateral to the body's midline, the bicondylar angle aligns the lower limb with the center of gravity, thereby facilitating human movement.
How would you explain the key concepts for the CWA in less than two minutes?
Answers
Answer:
Explanation:
vPoint Source - a source of water discharged to surface water through a discrete point - generally through a pipe, ditch, or channel.
Nonpoint Source - Nonpoint sources, such as parking lots or athletic fields, discharge runoff water to groundwater or surface water; runoff does not come from a pipe, ditch, or channel. These sources may contain pollutants such as pesticides, motor oil, and soaps.
Navigable Waters of the United States For the purposes of the Clean Water Act, the term "navigable waters" includes:
all waters used in commerce, including groundwater;
all interstate waters including wetlands, mudflats, and sand-flats; and
all other waters such as lakes, rivers, streams, wetlands and sloughs.
EPA policy states, "The majority of facilities in the U.S. have the potential to discharge to navigable waters." The Supreme Court decision in (2006) requires the Army Corps of Engineers and the EPA to determine whether there is a "significant nexus" between a navigable waterway and an area a spill might affect. In June of 2007, EPA and the Army Corps of Engineers released provisional interpretive guidance regarding the "significant nexus” question. According to this guidance, the agencies will assert jurisdiction over traditional navigable waters, wetlands adjacent thereto, and relatively permanent tributaries thereof. The agencies will generally not assert jurisdiction over swales and ditches that lack routine water flow. Finally, the agencies will apply the "significant nexus" requirement and make a case-by-case, fact-specific analysis on impermanent tributaries and other wetlands.
Additional executive orders were issued 2015 in 2019. Under the 2019 proposal, traditional navigable waters, tributaries to those waters, certain ditches, certain lakes and ponds, impoundments of jurisdictional waters, and wetlands adjacent to jurisdictional waters would be federally regulated. It also details what are not "waters of the United States," such as features that only contain water during or in response to rainfall (e.g., ephemeral features); groundwater; many ditches, including most roadside or farm ditches; prior converted cropland; stormwater control features; and waste treatment systems.
Could the requirement for one or more NPDES Discharge Permit apply to my campus?
If your campus discharges pollutants directly to navigable waters of the United States through a point source, you must obtain an NPDES permit or redirect the flow of the waste.
Stormwater releases from certain activities require an NPDES permit. The most common activities on college campuses requiring NPDES permits for stormwater are construction activities disturbing more than 1 acre, hazardous waste storage areas operating under the Resource Conservation and Recovery Act permit system, steam-generating power plants, and airports. See Stormwater section below.
Regulations issued by local water authorities, or Publicly Owned Treatment Works (POTWs), not NPDES permits, govern discharges into sanitary sewer systems. See Sewer Use (POTW) section below for more information about requirements for using POTWs for commercial or industrial waste disposal.
What do I have to do related to NPDES Discharge Permits?
Determine where wastewater flows from buildings and processes on your campus. Any industrial or commercial operation (e.g., ice rink melt pits, floor drains, and vehicle wash stations) that discharge into a water of the United States may require an NPDES permit. If required, you must obtain such a permit from the appropriate regulatory agency, probably your state environmental agency.
French drains, dry wells, and septic system leach fields are different from point source discharges because they do not immediately affect surface water. Some state and federal environmental agencies manage these systems under the Underground Injection Control program, part of the Safe Drinking Water Act. See Safe Drinking Water Act for more information.
Details of NPDES
I need a definition of representation and diversity
Answers
Answer:
resperation is the the action of breathing.
diversity is a range of different things.
Explanation:
Homeostasis
exists in a hypotonic solution
O is a process that regulates and maintains equilibrium inside a cell
O occurs when there is a higher concentration of molecules on the outside of the cells
occurs when there is a concentration gradient
Answers
Answer:
regulates and maintains equilibrium inside a cell
Explanation:
i think that is your answer
How does the length of the man compare to the length the of the yeast cell
Answers
Answer:
Yeast, any of about 1,500 species of single-celled fungi, most of which are in the phylum Ascomycota, only a few being Basidiomycota. Yeasts are found worldwide in soils and on plant surfaces and are especially abundant in sugary mediums such as flower nectar and fruits. There are hundreds of economically important varieties of ascomycete yeasts; the types commonly used in the production of bread, beer, and wine are selected strains of Saccharomyces cerevisiae. Some yeasts are mild to dangerous pathogens of humans and other animals, especially Candida albicans, Histoplasma, and Blastomyces. As fungi, yeasts are eukaryotic organisms. They typically are …(100 of 333 words)
Explanation:
Directions: The suggested time for answering this question is about 22 minutes. Where calculations are required, clearly show how you arrived at your answer. Where explanation or discussion is required, support your answers with relevant information and/or specific examples.
The term “urban sprawl” describes the expansion of cities into rural areas. This phenomenon has occurred around the world and has had economic, health, and environmental consequences.
Describe TWO causes of urban sprawl.
Discuss TWO human health effects associated with urban sprawl.
The graph below shows the relationship between population density and petroleum use in selected cities.
Describe the relationship between population density and petroleum use shown in the graph.
A graph is shown of petroleum use. The y-axis is relative annual per capita petroleum use with no numbers on the axis. The x-axis is density in persons per hectare, which goes from 0 to 300 in increments of 50. A curve is drawn starting at the top of the y-axis and is decreasing and concave up with increasing density. The curve appears to asymptote along the x-axis and is relatively flat by about 200 persons per hectare. There are points that lie close to the curve indicating where particular cities fall. The first four cities at the top of the curve, which are both below 50 persons per hectare, are Houston, Los Angeles, Washington, and New York. Below New York a horizontal line is drawn indicating that the cities about this line are in the United States. Below this line but above the next horizontal line are Melbourne, Sydney, and Toronto, all around 50 persons per hectare. The cities between these horizontal lines are indicated to be in Australia and Canada. Below the second line but above the third line are Paris, London, and Vienna, from about 75 to 150 persons per hectare. The cities between these lines are indicated to be in Europe. Below the third horizontal line but above the x-axis are Tokyo, Moscow, and Hong Kong from about 150 to 275 persons per hectare, and the cities in this area are from East Asia and Russia.
Smart growth focuses on ways to encourage sustainable urban development. Describe TWO steps a municipality could take to encourage smart growth in order to limit urban sprawl.
Highway systems and urban sprawl often threaten wildlife populations. Describe TWO methods to reduce harmful effects on wildlife populations from highways and urban sprawl.
Urban sprawl often results in the loss of productive agricultural land near cities. Describe one practical way to increase food production within urban areas.
Answers
Answer:
Causes of Urban Sprawl:
Population Growth: Rapid population growth is a significant cause of urban sprawl. As cities experience an increase in population, there is a greater demand for housing and infrastructure, leading to the expansion of urban areas into previously rural or undeveloped lands.
Transportation Infrastructure: The development of transportation infrastructure, such as highways and roads, can contribute to urban sprawl. Improved accessibility and connectivity provided by these infrastructures often lead to the outward expansion of cities as people choose to live farther away from city centers.
Human Health Effects Associated with Urban Sprawl:
Sedentary Lifestyle and Obesity: Urban sprawl often leads to increased reliance on private vehicles and longer commuting distances. This sedentary lifestyle, coupled with the lack of pedestrian-friendly infrastructure, can contribute to a decrease in physical activity and an increased risk of obesity among residents.
Air Pollution and Respiratory Issues: Urban sprawl is associated with increased vehicular emissions, leading to poor air quality. Exposure to high levels of air pollution can cause respiratory problems, such as asthma and other respiratory diseases, impacting the health of individuals residing in these areas.
Relationship between Population Density and Petroleum Use:
The graph illustrates that there is an inverse relationship between population density and petroleum use. As population density increases, per capita petroleum use tends to decrease. This relationship suggests that higher population density is associated with more efficient use of petroleum resources, potentially due to factors such as improved public transportation systems, shorter commuting distances, and increased availability of alternative modes of transportation. The graph indicates that cities with higher population density tend to have lower per capita petroleum use, while cities with lower population density exhibit higher per capita petroleum use.
Steps to Encourage Smart Growth and Limit Urban Sprawl:
Mixed-Use Development: Municipalities can encourage mixed-use development, which involves integrating residential, commercial, and recreational spaces within the same area. This approach reduces the need for long commutes and promotes walkability, thereby limiting urban sprawl.
Transit-Oriented Development: Promoting transit-oriented development focuses on creating compact, vibrant communities around public transportation hubs. By providing easy access to public transit options, municipalities can encourage residents to rely less on private vehicles, reducing congestion and the need for expansive road networks.
Methods to Reduce Harmful Effects on Wildlife Populations:
Wildlife Corridors: Establishing wildlife corridors or green belts can mitigate the negative impacts of highways and urban sprawl on wildlife populations. These corridors provide protected pathways for wildlife to move between fragmented habitats, reducing habitat fragmentation and enhancing biodiversity conservation.
Eco-Friendly Infrastructure Design: Implementing wildlife-friendly infrastructure design features such as wildlife crossings, underpasses, and fencing can help prevent wildlife-vehicle collisions. These measures allow animals to safely traverse across highways and urban areas, minimizing the detrimental effects on wildlife populations.
Increasing Food Production within Urban Areas:
One practical way to increase food production within urban areas is through the implementation of urban agriculture initiatives. This can involve utilizing rooftops, balconies, community gardens, and vacant lots to cultivate crops, raise livestock, or engage in aquaculture. Urban agriculture not only increases local food production but also promotes food security, community engagement, and environmental sustainability by reducing the carbon footprint associated with long-distance food transportation.
By adopting smart growth strategies, addressing the impacts of urban sprawl on wildlife and implementing urban agriculture initiatives, municipalities can actively promote sustainable and resilient urban development.
Chemicals used in chemotherapy treatments to fight cancer can also harm cells in hair follicles and bone marrow.
What characteristic do these cels most likely share with cancerous cells?
O They form tumors.
O They spread through the blood.
• They divide rapidly.
O They contain a mutation.
A
Answers
Answer:
They divide rapidly
Explanation:
Some normal cells such as hair follicles cells, mouth cells, digestive tract cells, and bone marrow cells divide rapidly. In mammalians, hair follicle cells are cells localized in the skin, specifically in the dermal layer of the skin. In this region, epidermal cells that form the root of the hair divide rapidly by interacting with neuropeptides, hormones, and immune cells. On the other hand, the bone marrow is a spongy tissue found in bones that contain stem cells (which also divide rapidly). In consequence, it is well-known that high-dose chemotherapy treatments may damage these types of cells.
An experiment is designed to study the mechanism of sucrose uptake by plant cells. Cells are immersed in a sucrose solution, and the pH of the solution is monitored. Samples of the cells are taken at intervals, and their sucrose concentration is measured. The pH is observed to decrease until it reaches a steady, slightly acidic level, and then sucrose uptake begins. Rank the steps from first to last. To rank items as equivalent, overlap them.
A proton Pump, using ATP, pumps protons outside.
Sucrose moves into the cell.
H+ moves down electrochemical gradient into the cell.
A steady proton gradient with a higher concentration of H+ out of the cell is maintained by the proton pump.
pH decreases.
The gradient becomes sufficient.
Answers
Answer:
A proton Pump, using ATP, pumps protons outside
A steady proton gradient with a higher concentration of H+ out of the cell is maintained by the proton pump.
pH decreases;
The gradient becomes sufficient.
H+ moves down electrochemical gradient into the cell; Sucrose moves into the cell.
Explanation:
A proton Pump, using the energy of ATP hydrolysis, pumps protons outside the cell.
A steady proton gradient with a higher concentration of H+ out of the cell is maintained by the proton pump.
The continues outward pumping of protons by the proton pump causes the pH of the extracellular fluid to decrease
At some point the gradient becomes sufficient, and pH reaches a steady slightly acidic level.
H+ moves down its electrochemical gradient into the cell together with Sucrose through the hydrogen ion-sucrose co-transporter.
To rank items as equivalent, overlap them.
E
C
A
D
F
Co-transporterIn this experiment in which the mechanism of sucrose uptake by plant cells immersed in a sucrose solution, and the pH of the solution is monitored, the following steps are ranked in order:
E) pH decreases.
C) H+ moves down the electrochemical gradient into the cell.
A) A proton Pump, using ATP, pumps protons outside.
D) A steady proton gradient with a higher concentration of H+ out of the cell is maintained by the proton pump.
F) The gradient becomes sufficient.
A co-transporter also called a symporter, is a carrier protein that transports a solute and an ion from one side of the membrane to the other at the same time.
The proton pump is an integral protein that builds a proton gradient across a biological membrane.
The cell cannot import sucrose by simple diffusion, the cell expends energy to move the substance against a concentration gradient.
The sodium and potassium maintain the electrochemical gradient of living cells, the direction an ion moves across a membrane is determined by the electrochemical gradient.
Learn more about sucrose uptake:
https://brainly.com/question/559824
What does geological time have to do with rocks?
Answers
Answer: Measuring the amounts of radioactive elements in rocks let scientists useabsolute dating to give ages to each chunk of time on the geologic time scale. For example, they are now able to state that the Jurassic began about 200 million years ago and that it lasted for about 55 million years.
Explanation:
Create a phylogenetic tree of the major groups of plants using green algae as the outgroup. You should include angiosperms, gymnosperms, ferns and their allies, and bryophytes making sure to provide characters on the tree indicating why lineages separated where they did.
Answers
In this case, we have the major groups of plants, many characters have defined the appearance of each group however there are some traits that are too important and those are mentioned here.
In the base is algae, when the retention of the Zygote occurs plants started to evolve when plants started to evolve in earth bryophyte came to be, however they do not possess a proper vascular system, this occurred with pteridophytes (ferns and so forth), nonetheless still produced spores, angiosperms reduced gametes and pollen came as innovation, however, they produced strobili, so the innovation of angiosperms were flowers.
2 examples of what resources that humans use and how they affect the hydrosphere
Answers
Answer:
Fossil Fuels and Water resources
Explanation:
Humans use fossil fuels for transportation and other industries, but their combustion releases greenhouse gases that cause climate change and pollution that can harm aquatic ecosystems. Freshwater resources are also used by humans, but overuse and pollution can cause water scarcity and harm aquatic life, and the construction of dams and other infrastructure can alter natural water flows and ecosystems.
Which is not a major characteristic of life?
1) Homeostasis
2) Structural organization
3) Movement
4) Evolution
5) Energy use
Answers
Answer:
3 Movement
Explanation:
Growth and Reproduction of Life Form
REALLY NEED HELP
Winslow Homer and the Drama of Thermodynamics.” American Art 15, no. 1 (2001): 11–33.
QUESTIONS: 1. What is the author's thesis?
2. What is the context (culture, historical, and social background) of the work of art?
3. What is the content (subject) of the work of art?
Answers
The author's belief is that Winslow Homer's paintings depict the exciting tension between the standard of thermodynamics and the human desire for control and stability.
What is the effect of the setting?Homer's use of nautical and outdoor settings, as well as welcome depictions of labor and industry, represent the conflict between everything in creation's energy and the human struggle to harness and hold it.
Winslow Homer's work was created all along the late 19th century, a time of excellent technological and modern progress in America. The nation was extending westward, and skill was a growing interest in the natural world and the allure of power.
Homer's paintings indicate this cultural circumstance, as well as welcome personal experiences as a journalist covering war during the Civil War.
Homer's paintings frequently depict nautical scenes, in the way that storms, shipwrecks, and fishing expeditions. He also commonly portrays labor and manufacturing, such as lumberers, miners, and ironworkers. The content of his paintings stresses the struggle between humans and character, as well as the desire for control and expertise over the environment.
Read more about Homer's paintings here:
https://brainly.com/question/11437783
#SPJ1
what is the shape of deoxyribose that fits into a class of sugars calleda)pentosesb)starchesc)hexoses d)sucraloses
Answers
Deoxyribose is found on DNA and belongs to the carbohydrates family, this molecule is characterized by the number of carbon that possesses, 5 carbons hence the name pentose, so we can say that the correct answer is the option a.
What is the Silk Road? When did the Silk Road originate? How many countries are connected?
Answers
Answer:
The Silk Road, often referred to simply as the Silk Road, originated from a five-volume atlas published in 1877 by the German imperial geographer Baron Ferdinand von Richthofen. The Silk Road refers to the land passage starting from Chang'an or Luoyang, passing through Gansu and Xinjiang, to Central Asia, West Asia, Europe, and connecting the Mediterranean countries. At first, the Silk Road was opened by Zhang Qian's mission to the Western Regions in the Western Han Dynasty. It started from Chang'an and reached the farthest land trade route to the countries of West Asia. In the Eastern Han Dynasty, Banchao's mission to the Western Regions opened up the long-abandoned Silk Road. The east end of the route extends to Luoyang, the capital of the Eastern Han Dynasty, and the west end extends to Europe (Rome), which is the current complete Silk Road route. This road is also known as the "Overland Silk Road" to distinguish the other two future traffic routes under the name "Silk Road". Because silk products have the greatest influence on the goods transported westward by this road, it got this name. Its basic trend is set in the Han Dynasty, including three routes of South Road, Middle Road and North Road. But in fact, the Silk Road is not a "road", but an unmarked road network through mountains and deserts, and silk is only one kind of goods.
Explanation:
enzyme reaction rates consider the illustration below. what variable might be on the horizontal axis? (click on all that apply.)
Answers
The activation energy and temperature will be on the horizontal axis.
What is activation energy?A chemical reaction's activation energy and rate are tightly correlated. Furthermore, the chemical reaction will occur more slowly the higher the activation energy. This is because to the fact that molecules can only finish the reaction after climbing the activation energy barrier. Fewer molecules will have enough energy to cross the barrier at any one time as the barrier rises. Several reactions have activation energies that are so high that they essentially can't occur at all without an energy input. For instance, energy is released when a fuel like propane burns, but at ambient temperature, the rate of reaction is almost nil.
To know more about activation energy, visit:
brainly.com/question/28384644
#SPJ1
1.3.4 How can teenage pregnancies be avoided? List FIVE ways.
Answers
Answer:
Don't have sex. 5 points isnt a lot so I am not spending alot of time on it.
2.
What is the economic importance of Taenia sp?
Answers
Answer:
Taenia saginata and Taenia solium are the two taeniids of greatest economic and medical importance, causing bovine and porcine cysticercosis and taeniasis in humans. In addition, T. solium eggs can infect humans, often giving rise to fatal neurocysticercosis (12, 39).
Explanation:
Based on the weathering patterns you see what rock type is most likely shown below?
A Granite
B. Sandstone
C Limestone
D Shale
Answers
Answer: A granite
Explanation:
Living things_______in response to changer in there environment. 1.evolve. 2.fossils. 3.extinct. 4.species. Can some tell me which one it is?
Answers
When a phosphate group is removed from an ATP molecule, energy is......................
Answers
Answer:
Released.
Explanation:
The bonds between the phosphates in ATP are very high energy, meaning that the bonds really really want to break because phosphates don't like being so close to each other. When the bonds do break, a ton of energy is released (think of it like a celebration that they aren't so close anymore).
can someone give me and simple explanation for this?
What's the difference between primary succession and secondary succession?
Answers
Primary succession and secondary succession are two different processes of ecological succession that occur after a disturbance in an ecosystem.
Primary succession is the process by which a new ecosystem is formed on barren land where no soil or organisms exist, such as after a volcanic eruption or glacial retreat.
The process begins with the colonization of bare rock or sand by pioneer species like lichens and mosses. Over time, these organisms break down the rock or sand, creating soil that can support the growth of larger plants like grasses and shrubs. Eventually, trees and other complex organisms take root, creating a mature ecosystem.
Secondary succession, on the other hand, occurs when a disturbance, such as a wildfire or human activity, destroys an existing ecosystem but leaves behind soil and some organisms.
The process begins with the growth of pioneer species that can quickly colonize the area, such as weeds and grasses. As the ecosystem recovers, more complex organisms move in, and the ecosystem slowly returns to its previous state.
In summary, primary succession occurs on bare land without soil or organisms, while secondary succession occurs on land that has been disturbed but still contains some soil and organisms. The processes of succession are essential for the renewal and recovery of ecosystems after a disturbance.
Know more about ecosystem here :
brainly.com/question/842527
#SPJ11
6 adaptations of camel
i need simple or short answers
i will mark brainliest for simple and short answer :3
Answers
Answer:
Wide feet for walking in sand.long eyelashes to protect eyes from blowing sand.They can survive a while without food and water.The fat in their humps will break down and give them energy during long trips.They spit when faced with a threat.Long large intestine for absorbing water and food efficiently.Explanation:
Hope this helped!
The 6 adaptations of camel are : long legs, drinks large amount of water, excrete less urine,hump stores fat,padded feet and long eyelashes.
1. Camel have lengthy legs to keep your body out of the hot sand.
2. Camel consumes a lot of water when it is available and then stores it in its body.
3. Camel have much less urine in their excretions, and their dung is dry. None of them perspire. A camel can go for several days without drinking water since it loses very little water.
4. A camel's hump is where fat is stored. The hump functions as a fat or energy reserve in times of need.
5. The camel has padded feet, which are big and flat and make it easier for it to move around on the sand. The padded feet prevent it from sinking into the sand in opposition to the weight of its own body and the load it is carrying.
6. Camel have long eyelashes and hairs to shield their eyes and ears from flying dust particles.
Learn more about camel adaptations here;
https://brainly.com/question/9162297
#SPJ9
when do mammals and dinosaurs appear in the rock sequence? Label this point appearance of mammals and dinosaurs
Answers
In the Triassic period, mammals and dinosaurs appear in the rock sequence.
During which period did mammals first appear?The first mammal appear in the fossil record during the late Triassic period, which is about 225 million years ago. The Triassic period is also known as the first period of the Mesozoic era. This period started from 251.9 to 201.3 million years ago. This era is popularly known as the “Age of Reptiles” because reptiles and dinosaurs were the dominant land animals at that time and they are present in large population due to good environmental conditions and large availability of food resources. We know that dinosaur extinct due to unavailability of food and bad environment.
So we can conclude that In the Triassic period, mammals and dinosaurs appear in the rock sequence.
Learn more about dinosaurs here: https://brainly.com/question/1150944
#SPJ1
How changes in permeability affect diffusion and osmosis Imagine a beaker of water that contains two types of solutes, represented in the following diagrams by the colors red and blue. A barrier divides the beaker in half and consists of a phospholipid bilayer and embedded integral proteins. This barrier mimics For the first 30 minutes, no net changes occur within the beaker. The image that follows is a snapshot of the solute and water particles at exactly 30 minutes. Each colored arrow tracks the movement of a single blue, red, or grey particle over the course of these 30 minutes. Snapshot at 30 Minutes Number of Particles Red: 2 Blue: 4 Water (grey): 100 Number of Particles Red: 4 Blue: 2 Water (grey): 100 Red Concentration: 0.02 0.04: Red Concentration Blue Concentration: 0.04 0.02: Blue Concentration The concentration of a solute is typically given in terms of molarity, or the number of moles of a solute per liter of solvent. In this problem, concentration is represented in terms of the ratio of the number of solute particles to solvent particles. For example, on the left side, there are 2 red solute particles and 100 water particles. Therefore, the concentration is = 0.02 red particles per solvent particle. 2 100 In the following table, determine whether each of the statements correctly describe the events of the first 30 minutes. In the First 30 Minutes True or False A concentration gradient exists for the red solute. Red particles can move freely throughout the beaker. Water can move freely throughout the beaker. At the end of 30 minutes, an electric field is applied to the membrane. The membrane proteins change shape, altering the permeability of the barrier. Over the next 30 minutes, the contents of both sides of the beaker change. Following is a snapshot of the solute and water particles after exactly 60 minutes. Calculate the concentration of the red solute in the right half of the beaker and enter it in the corresponding box (marked with a "?"). Snapshot at 60 Minutes Number of Particles Red: 3 Blue: 3 Water (grey): 100 Number of Particles Red: 3 Blue: 3 Water (grey): 100 Red Concentration: 0.03 с : Red Concentration Blue Concentration: 0.03 0.03: Blue Concentration с In the following table, determine whether each of the statements correctly describe the events between 30 and 60 minutes. Between 30 and 60 Minutes True or False Diffusion of the red solute occurs. A concentration gradient remains the same for the red solute. Water can move freely throughout the beaker. At the end of 60 minutes, ATP is added to both sides of the beaker in equal amounts. Following is a snapshot of the solute and water particles after exactly 90 minutes. Calculate the concentration of the red solute in the right half of the beaker and enter it in the corresponding box (marked with a "?"). Snapshot at 90 Minutes Number of Particles Red: 6 Blue: 3 Water (grey): 150 Number of Particles Red: 0 Blue: 3 Water (grey): 50 Red Concentration: 0.04 с : Red Concentration Blue Concentration: 0.02 0.06: Blue Concentration с In the following table, determine whether each of the statements correctly describe the events between 60 and 90 minutes. Between 60 and 90 Minutes True or False The concentration gradient of the red and blue solute intensifies. Red and blue particles undergo diffusion. Red and blue particles undergo active transport.
Answers
Changes in permeability can affect diffusion and osmosis by altering the ability of solutes and water molecules to cross a barrier, such as a cell membrane.
What happens when the permeability of barrier increases?If the permeability of the barrier increases, more solutes and water molecules will be able to cross the barrier, which can increase the rate of diffusion and osmosis. Conversely, if the permeability of the barrier decreases, fewer solutes and water molecules will be able to cross the barrier, which can decrease the rate of diffusion and osmosis.
Based on the information provided in the problem, the following statements are true for the first 30 minutes:
True: A concentration gradient exists for the red solute. This is because there are more red solute particles on one side of the barrier than on the other side, which creates a concentration gradient that drives diffusion.
False: Red particles cannot move freely throughout the beaker because they are confined to one side of the barrier.
True: Water can move freely throughout the beaker because it is not restricted by the barrier.
False: No electric field is applied to the membrane during the first 30 minutes.
False: The contents of both sides of the beaker do not change during the first 30 minutes.
For the period between 30 and 60 minutes, the following statements are true:
True: Diffusion of the red solute occurs because there is a concentration gradient that drives the movement of solute particles from high to low concentration.
True: The concentration gradient remains the same for the red solute because there are still more red solute particles on one side of the barrier than on the other side.
True: Water can move freely throughout the beaker because it is not restricted by the barrier.
False: ATP is not added to either side of the beaker during this period.
Finally, for the period between 60 and 90 minutes, the following statements are true:
True: The concentration gradient of the red and blue solute intensifies because more solute particles are present on one side of the barrier than on the other side.
True: Red and blue particles undergo diffusion because there is a concentration gradient that drives their movement.
False: Red and blue particles do not undergo active transport because ATP is not added to either side of the beaker.
The concentration of the red solute in the right half of the beaker at 90 minutes is 0, since all of the red solute particles have diffused to the left half of the beaker.
To know more about osmosis, visit:
https://brainly.com/question/1799974
#SPJ1
What is an exmaple of a chemical reaction?
Answers
Answer:
Iron and oxygen combining to make rust
Explanation:
A chemical reaction happens when one or more chemicals are changed into one or more other chemicals. Examples: iron and oxygen combining to make rust. vinegar and baking soda combining to make sodium acetate, carbon dioxide and water.
Which of the following helps protect biofilms from issues such as drying out and predators
a.) Extracellular polymeric substances
b.) Quorum sensing
c.) Becoming sessile
d.) Autoinducers
Answers
Extracellular polymeric substances help protect biofilms from issues such as drying out and predators. Option A
Biofilms are complex communities of microorganisms that adhere to surfaces and form a protective matrix. They can be found in various natural and artificial environments, such as riverbeds, medical devices, and plumbing systems. Biofilms provide advantages to the microorganisms within them, including protection from environmental stresses and predators.
One of the key components that helps protect biofilms is extracellular polymeric substances (EPS). EPS are complex mixtures of polysaccharides, proteins, and DNA that are secreted by microorganisms within the biofilm. These substances form a matrix that encases the cells, providing structural support and protecting the community.
EPS help biofilms resist drying out by retaining water and preventing desiccation. The polysaccharides in EPS can absorb and retain moisture, creating a hydrated environment within the biofilm even in dry conditions. This is crucial for the survival of the microorganisms within the biofilm.
Additionally, EPS serve as a barrier against predators. The matrix formed by EPS can make it difficult for predators, such as protozoa or grazing organisms, to access and consume the microorganisms within the biofilm. It acts as a physical defense mechanism, limiting the exposure of the microorganisms to predation.
While quorum sensing, becoming sessile (immobile), and autoinducers are all important mechanisms and processes associated with biofilms, they do not directly address the protection of biofilms from drying out and predators. So Option A is correct.
For more question on biofilms visit:
https://brainly.com/question/13232627
#SPJ8