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Alex poured some pond water into three beakers. She then put waterweed into each beaker. She put the beakers in different places.
b. In the school pond there were lots of water lilies with large leaves covering the surface. There were not many plants growing below the surface. Suggest a reason for this.
Answers
Answer:
I can't see any picture
Explanation:
No because for real?
Related Questions
1. Which of the following is an example of sensitization:
You blink each time your eye doctor gives you a puff of air in your eyes.
A dog was hit by his previous owner, and now the dog cowers each time his new owner reaches out to pet him.
You no longer feel your shirt touching your skin.
You're walking on the sidewalk and a bicyclist almost hits you, so you jump out of the way.
Answers
The example of sensitization from the given alternatives is that 'A dog was hit by his previous owner, and now the dog cowers each time his new owner reaches out to pet him.'
Sensitization refers to the process in which an organism becomes more sensitive to stimuli, both good and bad. It happens when the body's nervous system becomes oversensitized to a particular stimulus that it begins to respond even to weaker or non-threatening stimuli.
The example given in the first option refers to a simple reflex action that occurs in response to the puff of air that is blown into the eyes during the eye examination. The third option is about sensory adaptation, which occurs when sensory receptors are exposed to stimuli for an extended period, resulting in a reduction in sensitivity. The fourth option refers to the fight or flight response that occurs as a result of a threatening stimulus, in which an individual's body prepares to confront or flee from danger.
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Which type of art has no visible subject?
A major concern about increasing global temperatures is that a large portion of polar ice could detach and melt into the ocean.
Answers
Abstraction is a type of art which has no visible subject.
Abstraction is the subject of abstract art. In essence, this kind of art stimulates the senses through the representation of shape, line, color, etc., but is devoid of forms found in the actual, physical world. Abstract art is frequently more linked to and associated with an artist's aesthetic and mode of expression. Sometimes, it has an emotional theme. Non-figurative or non-objective art are some names for it.
Perspective in art relates to how real or imaginable objects (such as people, landscapes, etc.) are depicted in a visual medium like painting, drawing, or sculpture. Additionally, perspective gives artwork a tone and atmosphere.
In atmosphere , increasing global temperature has become a major cause for the rapidly melting of the polar ice into oceans. It is an example of abstraction where there is no any visible subject but it has been represented through imagination and prediction.
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Under what circumstances would a controlled burn be a good idea? Explain your answer.
Answers
Answer:
Controlled burns are lit for a number of reasons. By ridding a forest of dead leaves, tree limbs, and other debris, a prescribed burn can help prevent a destructive wildfire. Controlled burns can also reduce insect populations and destroy invasive plants. In addition, fire can be rejuvenating for the plants.
A current-carrying wire is positioned vertically. The current in the wire is moving upward. If you move a compass slowly around the wire, how would the direction of the compass needle change?
A.
The compass always points in the same direction.
B.
The compass needle would rotate clockwise.
C.
The compass needle would rotate counterclockwise.
D.
The compass needle would spin erratically.
Answers
describe how a person’s activity level can affect their health.
Answers
Hey. Doing a regular physical activity throught your day can give benifites to your health. It can also help you feel confident and strong
Example:
It reduces the risk of developing heart disease, many cancers, high blood pressure, stroke, type 2 diabetes and 'thinning' of the bones.
Hope this helps!!
Hypothetically, a cell has DNA that weighs 10 picograms. This cell goes through S phase and is about to undergo mitosis. How much does the DNA of this cell weight now? How much would the DNA of the two cells produced at the end of mitosis weigh? Explain your reasoning.
Answers
After S phase, the DNA of the cell would weigh the same as it did before, which is 10 picograms. During the S phase of the cell cycle, DNA replication occurs, resulting in the synthesis of an identical copy of the cell's DNA.
The total amount of DNA in the cell does not change because the newly synthesized DNA molecules have the same weight as the original DNA molecules. Therefore, the DNA weight remains constant at 10 picograms after S phase.
At the end of mitosis, the cell divides into two daughter cells. Each daughter cell receives an equal and identical set of chromosomes, which includes the replicated DNA from S phase. Since each daughter cell receives the same amount of DNA as the parent cell, the weight of DNA in each daughter cell would also be 10 picograms.
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What type of evolution (convergent or divergent) does biochemical evidence provide evidence for?
Answers
Answer: Divergent evolution or divergent selection is the accumulation of differences between closely related populations within a species, leading to speciation.
Explanation: Greetings:)
Which of the following is a true statement regarding microclimates?
A. microclimates matter mainly to small-scale farmers
B. microclimates are not a natural phenomenon
C. microclimates offer ecological niches different from the surrounding climate
D. microclimates can be located and identified using the USDA Hardiness Map
Answers
Answer:
c
Explanation:
Answer:
a
Explanation:
Cool dinosaurs to learn about? This is for a science report I need some ideas please and thank you.
Answers
Answer:
Uhm- they have long nails.. some of them can breath underwater... and and they smack people with their tails.. xd
Sorry.. I really don't know!
MilkySokka~
Plesiosaur- a Dinosaur that lives in the sea
Mosasaurus- ruled the food chain for millions of years
Cretaceous- a prehistoric alligator but very big
In this activity, you will select a genetically based disease to research. Diseases have a variety of causes, including bacteria, viruses, and toxins. An important part of your research will be to identify that the disease relates (at least in part) to a person's genetics. In a genetically based disease (also called a genetic disorder), a mutation at one or more specific genes either causes the disease or puts someone at a higher risk for developing the disease.
-Here are some examples of genetic disorders you could choose:
--Sickle cell anemia, Type 1 diabetes, Breast cancer, Colon cancer, Cystic fibrosis, Huntington's disease, Alzheimer's disease, Alpha thalassemia, Beta thalassemia, Hemophilia, Marfan syndrome
--As you pick a disease to research, remember that you are looking for a disease caused by a gene or genes. Genetic disorders may be easily confused with chromosomal disorders. Chromosomal disorders involve a person either having an extra chromosome, as in Down syndrome, or missing an entire chromosome. Chromosomal disorders are not caused by mutations at one or more specific genes. So, you should not research one of these disorders for this activity.
--Mutations of some genes make a disease more likely. But a person with these genes may or may not develop a disease. You may choose one of these genetic disorders, but be sure you understand and explain that difference.
--After you have chosen a disease to study, you will perform research using reliable internet or library sources. For this assignment, you should include at least one primary source along with your secondary sources. Primary sources are published by scientists to share the results of their investigations. They include descriptions of the methods used, data gathered, data analysis, and conclusions. Primary sources are often published in peer-reviewed science journals. They are written for other scientists, so they can be long and complex. However, they usually begin with an abstract that summarizes the information, which can be helpful to read. Secondary sources review or summarize primary sources. They are often written by experts, but they can help nonexperts understand the information presented in primary sources.
--For this topic, you might find reliable information in scientific journals, on government websites, or in university publications. Here are a few suggestions of places to look :
--National Human Genome Research Institute: https://www.genome.gov/
National Center for Biotechnology Information PubMed Central®: https://www.ncbi.nlm.nih.gov/pmc/
National Library of Medicine MedlinePlus®: https://medlineplus.gov/
There are also strategies you can use to achieve useful results in an internet search. For example, consider using the following search terms:
--[your chosen disease] + .org
scientific journals + [your chosen disease] + gene
Before you decide to use a source, consider whether it is likely to be credible and reliable. Think about these questions:
Who is the author? Is this person an expert in the subject or in communicating science topics?
What is the goal of the author?
Does the author have a possible bias?
Was the material written recently, or is the information it contains likely to be outdated?
Does the author include specific scientific evidence to support the claims?
Are the claims and reasoning presented clearly, without grammatical errors or information that you know to be inaccurate?
Does the author cite credible references?
In Part 1, you will start by finding websites with information you can use. The questions in Part 2 will help you take notes. In Part 3, you will create a brochure or pamphlet that summarizes the information you researched and can help educate a patient about the disease.
Part 1: Identifying Sources (5 points)
1. List at least five terms from the introduction that you can use as keywords in your search. (1 point)
2. Identify at least two websites or other sources you will use to start your research. If you end up using other websites or sources to answer the questions in Part 2, add them to this list. Cross out any websites that don't end up helping you complete the activity. (2 points)
3. Evaluate two of the sources you plan to use, including a primary source. Explain why each source seems credible and likely to contain accurate information. Evaluate the arguments they present. Do the arguments seem valid? Are they backed up by data? Identify possible sources of bias. (2 points)
Answers
Activity requires selecting a genetically based disease to research, finding credible sources, and creating a brochure summarizing the findings. Suggestions of diseases and sources are given. Primary and secondary sources should be used, and sources should be evaluated for credibility and bias.
The activity involves selecting a genetic disorder to research and finding reliable sources of information using at least one primary source. The instructions advise against selecting a chromosomal disorder, and note that some genetic disorders are caused by mutations that make the disease more likely but do not guarantee it. Reliable sources of information are suggested, and strategies for finding information on the internet are given.
The instructions also provide guidelines for evaluating sources, including assessing the author's expertise and possible bias, as well as checking for supporting evidence and accurate information. Finally, the activity requires creating a brochure or pamphlet summarizing the findings to educate a patient about the disease.
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Which of the five stages of respiration takes place at the alveoli?
Answers
Answer:
External respiration is the exchange of gases with the external environment, and occurs in the alveoli of the lungs.
The scientific method generally begins when a scientist makes _____.
Answers
Answer: an observation
Explanation:
The removal of sections of rna, called introns, occur at which regulation step in eukaryotic cells?.
Answers
RNA splicing removes sections of introns from RNA, the second step of the three-step regulation of a eukaryotic cell.
The nascent transcript's 5′-triphosphate is degraded to a diphosphate during 5′-capping, and then guanosine monophosphate is added in a reverse 5′-5′ orientation. The GpppN- cap is then methylated to create m7GpppN-.
The non-coding segments (introns) that divide the coding sequences (exons) are eliminated during splicing, and the exons are then united. A specific location on the transcript is cut during 3′-polyadenylation, and a poly(A) tail is added.
Hence, RNA splicing is removal non-coding region or introns.
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Which portion of a neuron contains all of the organelles?.
Answers
Answer:
dendritic processes and spines
Explanation:
URGENT PLEASE HELP
Rashid is conducting a seminar on the importance of coral reefs. Which point should he include?
A. that corals can be picked from the sea and sold
B. that corals are poisonous and can be used for pest control
C. that corals have a hard exoskeleton that can be used for construction of buildings
D. that corals are impervious to damage
E. that corals provide economic assistance to coastal populations through fisheries
Answers
Answer:
lo
Explanation:
pseudomonas has been found growing in quaternary ammonium compounds (quats). group of answer choices true or flase
Answers
The statement "Pseudomonas has been found growing in quaternary ammonium compounds (quats)" is indeed true.
Quaternary ammonium compounds (QACs) are widely used as disinfectants and cationic surfactants in various industries, including healthcare and food processing.
This ability is attributed to P. aeruginosa capacity to modify the charge of its cell surface, thereby reducing the interaction between the bacterial cell wall and the QACs.
Additionally, P. aeruginosa can develop resistance against QACs through the presence of efflux pumps, which actively remove the QACs from the bacterial cell envelope.
To ensure effective disinfection and prevent the emergence of resistant bacteria, it is crucial to regularly monitor and evaluate the efficacy of QACs in healthcare and food processing industries.
Additionally, implementing appropriate disinfection protocols becomes essential to mitigate the growth and spread of pathogens like P. aeruginosa.
By doing so, the risk of microbial contamination can be minimized, promoting a safer environment in these settings.
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Mammals produce heat by using the endogenous uncoupling agent:A) the protein cytochrome c.B) the protein thermogenin.C) a modified form of the F0F1 ATPase.D) the small molecule 2,4-nitrophenol synthesized by the cell.E) the protein thioredoxin.
Answers
Mammals produce heat by using the endogenous uncoupling agent of the protein thermogenin. The correct answer is B.
Thermogenin, also known as uncoupling protein 1 (UCP1), is a unique protein found in brown adipose tissue (BAT) of mammals. Its primary function is to facilitate heat production, or thermogenesis, by uncoupling the oxidative phosphorylation process within the mitochondria.Here's a step-by-step explanation of how thermogenin works to produce heat:Thermogenin is activated by cold temperatures or other stimuli, such as norepinephrine released in response to cold exposure.Upon activation, thermogenin is inserted into the inner mitochondrial membrane, where it forms a channel for protons (H+).The flow of protons through this channel allows them to bypass the ATP synthase complex (F0F1 ATPase), which is responsible for generating ATP during oxidative phosphorylation.By bypassing the ATP synthase complex, the energy derived from the electron transport chain is released as heat instead of being used to synthesize ATP.This increase in heat production helps to maintain body temperature and protect against hypothermia.In conclusion, the endogenous uncoupling agent responsible for heat production in mammals is the protein thermogenin, which works by disrupting the normal process of oxidative phosphorylation and releasing energy as heat instead of ATP. This mechanism is essential for maintaining body temperature and adapting to cold environments.For more such question on thermogenin
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The alternative pathway of complement cascade activation begins with ________ binding to the surface of a microbe. c5b c5a c3b c1 factor b
Answers
The correct answer is c3b.
The intrinsic C3 thioester bond of the alternative pathway (AP) is progressively hydrolyzed spontaneously by diverse proteins, lipids, and carbohydrate structures on microbes and other external surfaces [12–14], and this further activates the AP [1, 15]. A blue line pointing to C3 denotes the fluid-phase C3b promoting assembly of AP C3 convertase as the proposed mechanism for the reaction of properdin with a target on the foreign surface [27]. Thick red lines signify amplification mechanisms: Factor H regulates and inhibits the tick-over reaction, a gradual spontaneous activation involving C3(H2O) reacting with factor B. Properdin also promotes self-amplification in the other loop by stabilizing the C3bBb complex.
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loading up on sugar___ is advisable before a speech because it gives you quick energy
Answers
Loading up on sugar is not advisable before a speech because it gives you quick energy.
Sugar is a crystalline carbohydrate that is sweet to the taste. Sugars that are commonly used in foods include glucose, fructose, and sucrose. Sugars can be found naturally in fruits and vegetables, as well as honey, while others, such as high fructose corn syrup, are frequently added to prepared foods. Although consuming sugar can provide a quick burst of energy, it is not recommended to load up on sugar before giving a speech.
When you consume a lot of sugar, your body responds by releasing insulin to break it down. The insulin then causes a drop in blood sugar levels, resulting in a drop in energy. This can cause tiredness, confusion, and difficulty concentrating, which are all the opposite of what you want when giving a speech.
Instead, a balanced meal consisting of complex carbohydrates, protein, and healthy fats is a better option for providing sustained energy and focus during a speech.
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what is a difference between dna replication and rna transcription? multiple choice synthesis occurs in the 3' to 5' direction in dna replication but in the 5' to 3' direction in rna transcription. in dna replication the helix is never closed after it is opened by helicase, but once rna polymerase has finished transcribing a region, the double helix closes. dna replication produces a fundamentally different type of molecule than is produced by rna transcription. dna replication occurs in the nucleus, and rna transcription occurs in the cytoplasm. all of these are differences between dna replication and rna transcription.
Answers
The helicase never closes the helix after opening it in DNA replication; however, once RNA polymerase has finished transcribing a region, the double helix closes.
In contrast to RNA transcription, which produces a complementary copy of messenger RNA (mRNA), DNA replication produces two identical copies of DNA.
The "sense" and "antisense" strands are used in transcription for DNA synthesis, while only the "sense" strand is used in transcription for protein synthesis.
Similar to DNA, RNA is found in ribosomes, which suggests that it plays a significant role in protein synthesis. DNA and RNA differ in two ways: In contrast to DNA, which contains deoxyribose as a sugar, RNA contains the pyrimidine uracil (U in codon names) rather than thymine.
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Compared to animal-pollinated plants, wind-pollinated angiosperms____________ (A) produce fewer seeds because winds disperse seeds in a targeted manner (B) produce more seeds because winds disperse seeds greater distances (C) produce much less pollen because winds disperse pollen in a highly targeted manner (D) produce much more pollen because winds disperse pollen randomly
Answers
The correct option is (D) produce much more pollen because winds disperse pollen randomly.
What exactly are seeds?A mature ovule that contains an embryo, a little immature plant, and food reserves inside of a protective seed coat is called a seed. All blooming plants reproduce through the generation of seeds. When pollen touches an ovary inside a flower, it develops into a fruit. The ovules from the ovary develop into seeds inside this fruit.
Why are seeds so important?Biologically and economically, seeds are extremely important. They are rich in protein, carbohydrate, and oil reserves that support a plant's early growth and development. Many cereals and legumes are major food sources for a significant section of the world's population because to these reserves.
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A noble prize winner gave hypothesis about effect of COVID-19 vaccine. Can it be wrong? Why?
Answers
Answer: He/she can be possibly commit mistakes, though with a noble prize.
Explanation: He/she remains a human person before and after the prize. But, it has a degree of huge impact to those who know that person. Many people will tend to believe what he/she said due to the title that she/he acquired. The best thing that people do is to verify this hypothisis on their own.
5. Why is the residence time in rivers so low?
Answers
Answer:
because of flual flow the have c shaped
please answer the following questions correctly
Answers
Answer:
i. Name each of the parts labelled I, II, III, IV and V.
{5 marks}
I - Crown / Enamel
II - Dentine
III - Cement / Periodontal membrane
IV - Jaw bone / Root
V - Pulp Cavity
ii What is the function of each of the parts labelled I and III?
{2 marks}
I - Protects teeth from harmful bacteria
-- Enable teeth withstand pressure of chewing
-- Cutting / chewing / protects dentine / protect pulp cavity
III - hold tooth firmly (in socket / Jaw bone)
iii Which of the labelled parts could be affected by tooth decay?
{1 mark}
V - Pulp cavity
iv State three ways by which tooth decay may be prevented.
{3 marks}
→ avoid using sharp-pointed objects
→ avoid having dry mouth
→ use water containing fluorides to wash teeth / mouth
→ avoid smoking
→ the teeth should be cleaned regularly after each meal / remove food particle from the teeth / flossing
→ wash the mouth vigorously after each meal
→ regular visit to the dentist
→ avoid eating too hot foods
→ avoid eating too much sugary food
→ avoid eating too cold food / taking too cold drinks
Explanation:
Which scientist was harshly criticized for his theories on "inheritance of acquired characteristics?"
- Jean Baptiste Lamarck
- Alfred Russel Wallace
- Georges Cuvier
- Charles Lyell
Answers
The vestibular system is located in two structures of the inner ear. please select the best answer from the choices provided t f
Answers
The vestibular sense has been originated from the inner ear. Thus, the given statement has been false.
The vestibular sense has been the sense of gravity or balance that helped the body maintain balance by the body while performing activities.
The sensory system in the body has been mediated by the spatial orientation of the body with a semicircular canal network. The orientation has been mediated within the vestibular labyrinth. The labyrinth has been located in the inner ear.
Thus, the vestibular sense has been originated from the inner ear. Thus, the given statement has been false.
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Answer:
True
Explanation:
The vestibular system is located in two structures of the inner ear.
What is the name of the process by which an electric impulse moves through a nerve cell?
Answers
Explanation:
Action Potential.
An action potential, also called a nerve impulse, is an electrical charge that travels along the membrane of a neuron. It can be generated when a neuron's membrane potential is changed by chemical signals from a nearby cell.
Other than ddNTPs, DNA Pol, and purified plasmid DNA, what should be added to reaction tubes in the Sanger method of sequencing? What type of gel should be used to load the samples?
Answers
To perform the Sanger method of sequencing, three additional components should be added to the reaction tubes: a primer, a DNA sequencing terminator, and a buffer solution.
The primer is necessary to initiate the synthesis of complementary DNA strands, while the sequencing terminator halts the elongation of the newly synthesized strand at specific bases, allowing for the determination of the sequence. The buffer solution helps to maintain optimal pH and salt concentrations for enzymatic activity. As for the type of gel to use, a polyacrylamide gel is typically utilized to load the sequencing reaction products. This type of gel can resolve DNA fragments of different sizes with high resolution, allowing for accurate determination of the sequence.
Additionally, the gel can be visualized through fluorescent staining or autoradiography to read the sequencing results. Overall, the Sanger method of sequencing requires the addition of three key components to reaction tubes and the use of a polyacrylamide gel for sample loading and analysis. The Sanger method has been instrumental in advancing our understanding of DNA sequences and has contributed significantly to various fields, including genomics and molecular biology.
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predict which temperature 20 c ,38 c, or 50 c, yo would expect a human enzyme to function best. plan. simple investigation to test your hypothesis.
Answers
For a human enzyme to function properly the temperature of the environment should range from 35 to 40°C. Thus, the most optimal temperature will be 38°C.
What are optimal conditions?The optimal conditions are the set of conditions at which an enzyme shows maximum activity. The conditions such as temperature, pH, pressure, and solute concentration affect the activity of an enzyme in a chemical reaction.
The Human enzyme would function best on the temperature of 38°C because it is the closest temperature to the temperature of human body. The optimal temperature of most of the enzymes is in the range of 35 to 40°C.
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Which of the following provides evidence to support the continental drift theory?
Mapping of the ocean floor using sonar shows plates moving apart
Shape of continents look like puzzle pieces that can fit into one another
Spreading apart of the seafloor at the divergent boundary of the mid-ocean ridge
Symmetrical pattern of magnetic stripes in the crust on both sides of the mid-ocean ridge
Answers
Answer:
shapes of the continents look like puzzle pieces that can fit into one another
Answer:
A
Explanation: