Genes located in cells in different regions of
the body during embryonic development may
a. be turned on and off.
b. never be turned on.
c. be turned on and left on.
d. be activated for only a short time in one cell
and a long time in another cell.
e. do all of these
E
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A cell biologist examines a diploid cell from a particular species of during metaphase of mitosis and determines that 8 centromeres are present. Based on this finding, how many centromeres should be present in a single cell from this species during anaphase II of meiosis?
What will be an ideal response? Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you know about centromeres? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
In what ways can biologists contribute to the challenges faced by humanity in the 21st century?
A. All of the answer options are correct. B. They can develop crops that yield more food in the face of changing environmental conditions. C. They can make predictions about how global change will impact species and communities. D. They can work with lawmakers to ensure that government policies are environmentally sound. E. They can develop new methods to fight diseases.
According to the logistic growth equation dN/dt = rmaxN(K — N)/K,
A) the number of individuals added per unit time is greatest when N is close to zero. B) the per capita growth rate (r) increases as N approaches K. C) population growth is zero when N equals K. D) the population grows exponentially when K is small. E) the birth rate (b) approaches zero as N approaches K.
Using at least three examples, summarize how HPV can be prevented.
What will be an ideal response?