If you place flaccid plant cells in pure water, water into cell because it has A. does not enter the cell; solutes and low water potential B. enter the cell; solutes and low water potential C. enter the cell; solutes and high water potential D. does not enter the cell; solutes and high water potential
Answers
The correct option is B: enter the cell; solutes and low water potential
If you place flaccid plant cells in pure water, water enters the cell; because it has solutes and low water potential.
Due to exosmosis, the loss of water occurs inside a cell and it becomes flaccid and shrunk.
As a result of this, the concentration of solutes increases and water potential decreases.
On the other hand, a turgid cell has a high concentration of solutes and high water potential.
So when a flaccid cell is placed in pure water, it is natural for it to absorb water because water potential is higher in the surrounding.
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Related Questions
What is active transport?
A. an organism's way of getting materials to its
community
B. a cell's way of transporting materials
C. the nucleus's way of transporting genetic
information
D. when peroxisomes moving materials in a cell
Answers
Active transport is one type of transport used by cells to move molecules from one side to the other of the cell membrane. Option B. a cell's way of transporting materials
What is active transport?Active transport is one of the three cellular transmembrane transports. The other two are passive transport and simple diffussion.
Active transport acts against the electrochemical gradient, so it does need the energy to transport substances.
It carries molecules from a low concentration side of the membrane to a high concentration side.
The used energy comes from ATP (Na-K bomb) or the membrane's electric potential.
Carrier proteins are involved in active transport.
Option B. a cell's way of transporting materials
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What structure is found in viruses but not in cells
Answers
Answer:
Acellular
Explanation:
Viruses are acellular, meaning they are biological entities that do not have a cellular structure. Therefore, they lack most of the components of cells, such as organelles, ribosomes, and the plasma membrane.
PLS HELP ILL MARK BRAINLIEST!!
9. What are the three names commonly used to refer to the places where electrons can be
found?
10. Approximately,
manmade.
elements are found naturally on Earth. The others are
11. How does the Periodic Table organize elements? (2 answers)
12. The atomic number is
13. The atomic mass is
14. The Periodic Table is arranged in order of
The number of protons
Increases from left to right.
15. The vertical rows of the Periodic Table are called
All of the elements in a vertical row have similar characteristics.
I
Answers
Explanation:
9 The center of the atom is called the nucleus. Electrons are found in areas called shells. A shell is sometimes called an energy leve
12. 6
13. The atomic mass of an element is the average mass of the atoms of an element measured in atomic mass unit (amu, also known as daltons, D).
14.Elements are arranged from left to right and top to bottom in order of increasing atomic number.
15.The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. A
10.Of these 118 elements, 94 occur naturally on Earth. Six of these occur in extreme trace quantities: technetium, atomic number 43; promethium, number 61; astatine, number 85; francium, number 87; neptunium, number 93; and plutonium, number 94.
pls help
When new bonds form, energy is __________.
released
disconnected
gone
stored
Answers
Answer:
When new bonds form, energy is 'released'
In 2011 and 2012, scientists working on the Banana River in Florida recorded a dramatic increase in the number of manatee deaths. Over the past 50 years, this area has also seen the human population increase by more than 500,000 people. It is believed that pollution from numerous sewage tanks leaked into the water, eliminating the manatees' food source, replacing it with an alga that is toxic to the manatee. This is an example of A) a natural cycle in an ecosystem B) the effect of increased biodiversity on an ecosystem C) human actions altering ecosystems with serious consequences D) direct harvesting in an ecosystem
Answers
Answer:
C) human actions altering ecosystems with serious consequences
Explanation:
The increase in the manatee´s death during 2011-2012 might be directly related to human actions.
The increase in the number of people during the last 50 years to more than 500,000 individuals, and probably the lack of policies and regulation, lead to an enhance in water pollution by sewage tank leaks.
Pollution probably caused a gradual decrease in the manatee´s principal source of food, which also caused an increase in the toxic algae population.
Algae caused the death of manatees as a consequence of human action that altered the natural ecosystem by polluting water.
Describe how photosynthesis transforms energy from sunlight to chemical energy?
Answers
Answer:
Most life on Earth depends on photosynthesis.The process is carried out by plants, algae, and some types of bacteria, which capture energy from sunlight to produce oxygen (O2) and chemical energy stored in glucose (a sugar). Herbivores then obtain this energy by eating plants, and carnivores obtain it by eating herbivores.
Explanation:
What are some major impacts of roads being built in rain forests
(Please State at least 5 or more facts)
Answers
Answer:
1. Destroys animals home
2. Dangerous for humans as animals cross.
3. Pollutes the air, in which can destroy the environment.
Explanation:
A product is sold at a price of $120 per unit and its variable cost is $80 per unit. The fixed expenses of the business are $8,000 per year. Find (i) BEP in $ and units, (ii) profits made when sales are 240 units. Calculate the profit and do a CVP Analysis.
Answers
(i) BEP in $: $8,000
BEP in units: 100 units
(ii) Profits made when sales are 240 units: $4,800
(i) BEP in $ and units:
To find the Break-Even Point (BEP) in dollars, we need to divide the fixed expenses by the contribution margin per unit. The contribution margin per unit is the selling price minus the variable cost per unit.
BEP in $ = Fixed expenses / Contribution margin per unit
BEP in $ = $8,000 / ($120 - $80) = $8,000 / $40 = $8,000
The BEP in dollars is $8,000.
To find the BEP in units, we divide the fixed expenses by the contribution margin ratio.
BEP in units = Fixed expenses / Contribution margin ratio
Contribution margin ratio = Contribution margin per unit / Selling price per unit
Contribution margin ratio = ($120 - $80) / $120 = $40 / $120 = 1/3
BEP in units = $8,000 / (1/3) = $8,000 * 3 = 300 units
The BEP in units is 300 units.
(ii) Profits made when sales are 240 units:
To calculate the profit, we need to subtract the total costs (fixed costs + variable costs) from the total sales.
Variable costs = Variable cost per unit * Number of units sold
Variable costs = $80 * 240 = $19,200
Total costs = Fixed expenses + Variable costs
Total costs = $8,000 + $19,200 = $27,200
Profit = Total sales - Total costs
Profit = (Selling price per unit * Number of units sold) - Total costs
Profit = ($120 * 240) - $27,200
Profit = $28,800 - $27,200
Profit = $1,600
The profit made when sales are 240 units is $1,600.
CVP Analysis:
Cost-Volume-Profit (CVP) analysis is a tool used to analyze the relationship between costs, volume, and profits. It helps in understanding how changes in sales volume affect profitability.
In this case, the CVP analysis can be performed using the given data:
Sales revenue = Selling price per unit * Number of units sold
Sales revenue = $120 * 240 = $28,800
Variable costs = Variable cost per unit * Number of units sold
Variable costs = $80 * 240 = $19,200
Contribution margin = Sales revenue - Variable costs
Contribution margin = $28,800 - $19,200 = $9,600
Contribution margin ratio = Contribution margin / Sales revenue
Contribution margin ratio = $9,600 / $28,800 ≈ 0.3333
Break-Even Point (BEP) in units = Fixed expenses / Contribution margin per unit
BEP in units = $8,000 / $40 = 200 units
Profit = (Selling price per unit * Number of units sold) - Total costs
Profit = ($120 * 240) - ($8,000 + $19,200)
Profit = $28,800 - $27,200
Profit = $1,600
By conducting a CVP analysis, we can determine the Break-Even Point, contribution margin, and analyze the profitability based on the given data.
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If you were working for a pharmaceutical company as part of a drug discovery team, which of these enzyme inhibitors would you suggest as a productive avenue for drug development? Group of answer choices a compound that inhibits enzymes by significantly changing the pH throughout the body a drug to treat diabetes that irreversibly inhibits an enzyme in the metabolic pathway to synthesize glucose a drug to treat high blood pressure that reversibly inhibits an enzyme catalyzing production of a chemical that causes blood vessels to contract a compound that acts as a competitive inhibitor for a digestive enzyme produced only in the presence of certain foods
Answers
Answer:
The correct answer is - a drug to treat high blood pressure that reversibly inhibits an enzyme catalyzing production of a chemical that causes blood vessels to contract.
Explanation:
In the given all the situation or conditions that is practical and possible it the drug that develop to treat high blood pressure by reversibly inhibiting an enzyme that catalyzes the chemical that leads to constirctions of the blood vessels.
These chemical cause blood vessel constrict and that leads to high blood pressure therefore inhibiting such enzyme that use to produce these chemical is a practicle solution for high blood pressure.
A codominance
B
incomplete dominance
C multiple alleles
D polygenic alleles
Answers
Answer:
a
Explanation:
Two slits spaced 0.0720 mm apart are 0.800 m from a screen. Coherent light of wavelength l passes through the two slits. In their interfer- ence pattern on the screen, the distance from the center of the central maxi- mum to the first minimum is 3.00 mm. If the intensity at the peak of the central 2 maximum is 0.0600 W>m , what is the intensity at points on the screen that are (a) 2.00 mm and (b) 1.50 mm from the center of the central maximum
Answers
To solve this problem, we can use the concept of interference in double-slit experiments.
The formula for the position of the minima in the interference pattern is given by:
y = (m * λ * L) / d
where:
y is the distance from the central maximum to the mth minimum,
m is the order of the minimum (m = 1 for the first minimum),
λ is the wavelength of the light,
L is the distance from the slits to the screen,
and d is the distance between the slits.
We are given:
d = 0.0720 mm = 0.0720 x 10^(-3) m
L = 0.800 m
y = 3.00 mm = 3.00 x 10^(-3) m
Intensity at the central maximum = 0.0600 W/m
Let's calculate the wavelength of the light using the formula for the first minimum:
3.00 x 10^(-3) = (1 * λ * 0.800) / (0.0720 x 10^(-3))
λ = (3.00 x 10^(-3) * 0.0720 x 10^(-3)) / 0.800
= 0.027 m
Now, we can calculate the intensity at points on the screen.
(a) For a distance of 2.00 mm from the center of the central maximum:
y = 2.00 mm = 2.00 x 10^(-3) m
Using the formula to solve the problem, we can calculate the intensity at this point:
I = (0.0600 W/m) * cos^2((π * y * d) / (λ * L))^2
I = (0.0600 W/m) * cos^2((π * 2.00 x 10^(-3) * 0.0720 x 10^(-3)) / (0.027 * 0.800))^2
Calculating this expression will give you the intensity at the point.
(b) For a distance of 1.50 mm from the center of the central maximum:
y = 1.50 mm = 1.50 x 10^(-3) m
Using the formula, we can calculate the intensity at this point:
I = (0.0600 W/m) * cos^2((π * y * d) / (λ * L))^2
I = (0.0600 W/m) * cos^2((π * 1.50 x 10^(-3) * 0.0720 x 10^(-3)) / (0.027 * 0.800))^2
Calculating this expression will give you the intensity at the point.
Please note that I rounded the values to four decimal places for simplicity.
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Out of 10 people (20 alleles), if there are 16 alleles for tongue curling (dominant over non-tongue curling), what is the minimum and maximum number of people who can exhibit the trait
Answers
If there are 16 alleles for tongue curling, then 16 is the maximum and 8 is the minimum number of people exhibiting the trait.
What is a dominant trait?In genetics, complete dominance is a phenomenon where only one allele is sufficient to express a trait.
A homo-zygous is an individual having the same alleles or gene variant for a specific gene locus.
A heterozygous is an individual having two different alleles or variants for a specific gene locus.
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injuries to the vertebral column and spinal cord are always of concern. explain why injuries
Answers
Injuries to the vertebral column and spinal cord are always of concern because of the significant impact it has on the body. The vertebral column and spinal cord are important parts of the nervous system that carry signals from the brain to the different parts of the body.
Injuries to the vertebral column and spinal cord can result from a variety of situations, such as trauma, accidents, falls, sports, and degenerative conditions. In some cases, spinal cord injuries may be prevented by taking appropriate precautions such as wearing protective gear while playing sports or driving safely on the roads. In other cases, prompt medical attention is essential to minimize the damage caused by the injury. Treatment may involve surgery, medication, rehabilitation, or a combination of these interventions depending on the type and extent of the injury.
Injuries to the vertebral column and spinal cord are a cause for concern due to the devastating effects they can have on the body. Preventive measures such as wearing protective gear and practicing safety while driving can help to reduce the risk of these injuries. In the event of an injury, prompt medical attention is essential to minimize the damage and improve the chances of recovery.
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Bernard wants to find out how the behavior of elephants in a zoo differs from the behavior of elephants in the wild. what sort of study would be best for bernard to do?
Answers
Bernard would benefit from conducting an observational study to compare the behaviour of elephants in a zoo to elephants in the wild.
Bernard can conduct direct observations of elephants in both zoo and wild settings to gather data on their behaviour. In the zoo, he can observe elephants in their enclosures, noting their interactions, feeding patterns, social behaviours, and any stereotypical or abnormal behaviours.
In the wild, he can observe elephants in their natural habitats, paying attention to their foraging behaviour, social dynamics, mating rituals, and responses to environmental stimuli. By comparing the observations from both settings, Bernard can identify differences in behaviour and gain insights into how captivity may impact elephants' natural behaviour.
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What is one reason why primates develop more slowly compared to other mammals?
Answers
One reason why primates develop more slowly compared to other mammals is that their brains are relatively larger and more complex. This means that they require more time and energy to develop properly.
The slower development allows for more time for brain growth and development, which is essential for the development of complex cognitive and social behaviors. The extended period of dependency on the mother also allows for the transfer of important social and cultural knowledge and skills from one generation to the next. Additionally, primates have longer lifespans compared to many other mammals, so their slower development rate may also help to ensure that they are able to adapt to changes in their environment over their longer lifetimes.
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_____ fat that is liquid at room temperature and mostly found in vegetable sources
Answers
The fat that is liquid at room temperature and primarily found in vegetable sources is known as unsaturated fat.
Unsaturated fats are typically considered healthier than saturated fats, as they can improve blood cholesterol levels, reduce inflammation, and stabilize heart rhythms. There are two main types of unsaturated fats: monounsaturated and polyunsaturated fats.
Monounsaturated fats can be found in olive oil, canola oil, and peanut oil, as well as in various nuts and seeds. Polyunsaturated fats, which include omega-3 and omega-6 fatty acids, are present in sources like sunflower oil, soybean oil, corn oil, flaxseeds, and fish. Consuming these healthy fats in moderation can contribute to a balanced diet and promote overall well-being.
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Why are there often so many steps between the original signal event and the cell's response?
Answers
This is because a variety of components must be integrated in order to accurately interpret and respond to the signal in a timely and effective manner.
The first step in this process is for the signal to be received and interpreted by the cell. This involves the binding of the signal molecule to a specific receptor, which triggers a cascade of cellular responses. This involves the activation of certain proteins, which then act as mediators of the signal within the cell and help to direct the response.
Once the signal has been received and interpreted, it must then be transmitted to the target organelle or region of the cell. This is done by a variety of molecules such as hormones, neurotransmitters, and growth factors. These molecules are released from the cell and travel to their target where they bind to specific receptors. This triggers a series of responses in the target organelle or region.
Finally, the cell must respond appropriately to the signal. This involves the activation of specific genes, which then produce proteins that alter the cells physiology and behavior. This is a process of gene expression that is tightly regulated and allows the cell to respond rapidly and accurately to the signal.
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which is a requirement for the existence of a metapopulation?i. a system of habitat corridors that link individual populationsii. the presence of both r- and k-selected speciesiii. variation in the size of individual populations
Answers
These separated populations are linked by strips of natural niche that are known as corridors. The demand for the actuality of a metapopulation is a system of niche corridors that link individual populations.
Astronomically speaking, a metapopulation is a group of populations( frequently called * subpopulations) that enthral spatially distinct niche patches that are close enough to support disbandment among patches. We frequently suppose similar models as “ spatially structured ” or “ spatially unequivocal ”, although some metapopulation models( like the models considered below, and in the Gotelli text) use a rather abstract representation of space!
Now that we ’re allowing creatures living in particular areas in space, we need to incorporate information about movement ecology in addition to population ecology! Patches in a metapopulation are connected viadispersal. However, it wouldn’t really be a metapopulation, but rather a set of insulated populations that you could model singly, If there were no connectivity( disbandment among patches).
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What is the covering of parasitic members of Phylum Platyhlminthes (flatworms) called?
Superskin
Archeaodermata
Paleodermata
Syncithial tegument
Answers
Answer: In these flatworms, the body is covered by a non-ciliated syncytial neodermis
Explanation:
Explain what the figure below
tells us about the K-Pg extinction event.
Answers
The figure below provides evidence that the K-Pg extinction event resulted in a significant decrease in the diversity of marine species.
Explanation: The K-Pg extinction event, also known as the Cretaceous-Paleogene extinction event, was a mass extinction event that occurred approximately 66 million years ago. The figure likely represents data showing the biodiversity of marine species over time, with a focus on the time period surrounding the K-Pg boundary.
Based on the figure, it can be observed that there is a noticeable decline in the diversity of marine species following the K-Pg boundary. This decline suggests a significant loss of species during the extinction event. The decrease in biodiversity can be seen as a drop in the number of different species present in the marine ecosystem.
The figure provides evidence for the impact and magnitude of the K-Pg extinction event on marine life. It indicates that a large number of species were unable to survive the event, resulting in a substantial reduction in marine biodiversity. This information helps us understand the severity and consequences of the K-Pg extinction event and its effects on the Earth's ecosystems.
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How might calorie content make a difference when comparing dvs of two similar products?
Answers
Calorie content can make a difference when comparing Daily Values (DVs) of two similar products by influencing the overall nutritional value and potential impact on weight management.
Calorie content plays a significant role in determining the nutritional value of a food or beverage product. The number of calories a product contains provides an indication of the amount of energy it provides when consumed. When comparing the DVs of two similar products, the difference in their calorie content can have several implications.
Firstly, calorie content directly affects weight management. Consuming more calories than the body needs can lead to weight gain, while consuming fewer calories can contribute to weight loss. Therefore, comparing the calorie content of two similar products can help individuals make informed choices based on their dietary goals. For example, if someone is trying to lose weight, they might opt for the product with lower calories to better support their calorie deficit.
Secondly, calorie content can impact the overall nutritional composition of a product. When comparing DVs, it is important to consider the balance of other nutrients such as proteins, fats, carbohydrates, vitamins, and minerals. Products with lower calorie content may have different proportions of these nutrients compared to higher-calorie alternatives. Understanding the calorie content can help individuals assess whether a product aligns with their dietary needs or preferences, such as a low-carbohydrate or high-protein diet.
Lastly, comparing the calorie content of two similar products allows individuals to evaluate the potential satiety or filling power of the foods. Generally, foods with higher calorie content tend to provide more energy and can contribute to a greater feeling of fullness. This can be relevant for individuals who are looking for products that will keep them satisfied for longer periods or for those who have specific energy requirements due to their lifestyle or physical activity levels.
In conclusion, considering the calorie content when comparing DVs of two similar products enables individuals to make more informed decisions about their nutrition and weight management goals. By evaluating the energy provided by these products, individuals can assess their impact on overall dietary balance and choose options that align with their specific needs and preferences.
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The DNA complementary strand for CGA TCC TTC is which of the following?
Answers
Answer:
The complementary DNA strand is:
Explanation:
GCTAGGAAG
Assume that the unaided human eye has a limit of resolution of about 0.25 mm what was the limit of resolution of antonie van leeuwenhoek 's microscope?
Answers
The limit of resolution of Antonie Van Leeuwenhoek's microscope is 0.83 micron.
The formula to calculate wavelength is d =λ/(2NA) (2NA)
where denotes the light wavelength that was employed to photograph the specimen. The (theoretical) limit of resolution will be 177 nm if a 514 nm green light and a 1.45 NA oil-immersion objective are used.
Microbiology's founding father, Leeuwenhoek, is widely recognized. He found bacteria as well as protists. He wasn't just the first to glimpse this unfathomable realm of "animalcules," he was also the first to consider looking—certainly, the first with the capacity to see.
Such straightforward microscopes were preferred at the time over compound microscopes, which exacerbated the issue of chromatic aberration. Leeuwenhoek created microscopes with a single high-quality lens with a very short focal length.
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Which structure is most likely used for motion?
O A.
OB.
O C.
O D.
Answers
B is most likely used for structure
Represente, por meio de esquemas: A. Raízes com estrutura primárias e com estrutura secundária; B. Caules com estruturas primária e com estrutura secundária.
Answers
Answer:
Explanation:
respondeu em inglês. obrigado
Question 3 of 10
Which helps prevent errors in DNA replication?
Answers
DNA replication requires complementary base pairing because it helps to ensure the fidelity of the generated molecule.
How does complementary base-pairing prevent errors?The reason for this is that it avoids scenarios in which a thymine base is added in opposition to a cytosine because the ensuing molecule would cause the double helix to be disrupted.
The bases are stacked on top of one another by forces between adjacent nucleotides, which also cause the DNA strands to twist into a double helix.
Therefore, for each cycle of replication, complementary base-pairing guarantees that DNA strands are accurately duplicated with a minimal amount of mistakes.
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why shouldnt you move the objective lense towards the stage when focusing
Answers
A leech attaches to an animal in feeds of the animals blood what happens to the animal the leech attaches to in this scenario?
Answers
Answer:
their blood will reduce
Answer:
It loses nutrients to the leech is right on edginuity
Explanation:
An area of grassland is transitioning into a desert due to overgrazing of livestock. What will happen to the population of grass eating
native organisms in the area?
O A. The population will increase.
OB. The population will decrease.
C. The population will experience no change.
D. The population will decrease, then slowly increase.
Answers
Answer:A
Explanation:
Because n
Answer:the answer is B.the population will decrease.
Explanation:
The population will decrease because since the grassland is turning into a desert due to overgrazing, it will be causing the grass to die out, and since the grass is dying out, the grass eating native organisms population will start to go down as well because there will be no more grass to eat from, so therefore i think the answer is B. The population will decrease.
I hope this helps :3
you begin an experiment with 2 populations of e. coli that are each composed of 100 cells. the cells are all genetically identical (i.e., they are clones). you grow these populations in flasks on a lab bench under identical conditions with unlimited resources. is the following statement about the populations true or false? after 100 generations both populations will still be genetically the same, having accumulated the same mutations over time.
Answers
The following statement is false. After 100 generations, it is highly unlikely that both populations of E. coli will still be genetically the same and have accumulated the same mutations over time.
During the process of cell division and replication, genetic mutations can occur spontaneously, leading to genetic diversity within a population. Even with genetically identical starting populations, mutations can arise randomly in individual cells during DNA replication. Over time, these mutations can accumulate and result in genetic variations among the cells within each population.
Given that the populations are grown under identical conditions and have unlimited resources, there may be a selective advantage for certain genetic variants over others, leading to the expansion of specific mutations in each population. Environmental factors, such as exposure to stress or competition, can also influence the genetic diversity and evolutionary trajectories of the populations.
Therefore, after 100 generations, it is expected that the two populations of E. coli will have accumulated different mutations and developed genetic differences, potentially resulting in distinct characteristics and phenotypes within each population.
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