Which structure is represented by the letter C?Choose 1 answer:
(Choice A)
Chloroplast
(Choice B)
Vacuole
(Choice C)
Nucleus
(Choice D)
Mitochondria
Answers
Final answer:
Determining which cell structure is represented by 'C' isn't possible without a diagram. However, the listed structures include the Nucleus, Chloroplast among others, with each playing a significant role in cell functionality.
Explanation:
Without the specific diagram, it's difficult to accurately determine which structure is represented by the letter C. However, given the options, the four choices, A) Chloroplast, B) Vacuole, C) Nucleus, and D) Mitochondria, are all essential components to a cell's functionality. The Nucleus acts as the control center of the cell, containing DNA and regulating gene expression. The Chloroplast, on the other hand, is unique to plant cells and is the site of photosynthesis where sunlight is converted into energy for the cell.
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A researcher discovers two populations of birds that are similar. The two populations live in habitats that are different. What evidence might suggest to the researcher that the birds belong to different species rather than the same species?
Fish provide _______ to many people. fiber calcium protein vitamin C
Answers
How will this drop in pH influence point D in the model?
A)
The enzyme (B) will allow less of the substrate (A) to move into the active site (C).
B)
More of the substrate (A) will fit into the active site (C), so more products will be produced.
C)
The substrate (A) will no longer fit into the active site (C) because the enzyme has changed shape.
D)
There will be no change to the components of point D with a drop in pH; only temperature can denature the enzyme.
Answers
The activity of an enzyme is affected by many factors, and each enzyme has an optimum temperature and pH at which its reaction rate is fastest, so when the pH drops to 2, the substrate (A) will no longer fit into the active site (C) because the enzyme has changed shape, as shown in option C.
What are the factors that influence the enzyme?
The enzyme activities are influenced by changes in temperature and pH, so when there is any increase or decrease in these two factors, the shape of the enzyme will get affected, and hence the function gets affected too.
Hence, the activity of an enzyme is affected by many factors, and each enzyme has an optimum temperature and pH at which its reaction rate is fastest, so when the pH drops to 2, the substrate (A) will no longer fit into the active site (C) because the enzyme has changed shape, as shown in option C.
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Answer:
C)
The substrate (A) will no longer fit into the active site (C) because the enzyme has changed shape.
Explanation:
(2) offspring of antibiotic-resistant individuals
(3) organisms that were all present on day 1
(4) offspring with no resistance to the antibiotic
Answers
evolution
genetic variation
natural selection
Answers
Genetic variation is brought about by mutation, genetic recombination, and gene flow in a population. Therefore, option (C) is correct.
What is genetic variation?
The differences in DNA sequences that exist between individuals within the same group are referred to as genetic variation. Both germ cells, which include sperm and eggs, and somatic cells, which include all other types of cells, are subject to variation.
One source of genetic variation is mutations, which can be defined as any alteration in the sequence of genes found in DNA. Gene flow, which can be defined as the movement of genes across various groups of organisms, is still another source. The final cause of genetic diversity is sexual reproduction, which results in the formation of new gene combinations and can be a consequence of sexual reproduction.
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Answer:
genetic variation
Explanation:
I took the test
Answers
For example ; in birds, scientists will look for type of feathers, body structure, beaks to confirm the similarity of two birds.
Answers
Answer: Air pollution.
Air pollution occurs when harmful substances are introduced into the atmosphere. These substances majorly exist in two forms i.e solid ( particulate matter in air) and gaseous form.
CFCs (Chlorofluorocarbons) are compound consisting of Chlorine, fluorine, and carbon atoms. They are released in the atmosphere through aerosol sprays, air conditioners, refrigerators etc. Due to longer lifespan in the stratosphere, they can cause damage to the ozone layer thereby reducing earth's protection from harmful UV radiation. Also, they have warming effects which may cause global warming.
Smog is primarily named for the mixture of smoke and fog in the air. It is a blackish fog formed in the atmosphere mainly due to the reaction of various gases with dust and water vapors. it causes breathing difficulty and other harmful consequences.
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