Which stage of the demographic transition results in the greatest population growth?
A. pre-industrial stage
B. transitional stage
C. industrial stage
D. post-industrial stage
E. post-apocalyptic stage
Answer: B. transitional stage
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Which of the following would NOT be a component of a newly produced HIV virus particle?
A. protein capsid B. RNA C. reverse transcriptase D. viral envelope E. complementary DNA Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about HIV? 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?
The eukaryotic cell cycle is controlled at several points; which of these is not a control point?
A. Cell growth is assessed at the G1 checkpoint. B. Cell growth is assessed at the S checkpoint. C. DNA replication is assessed at the G2 checkpoint. D. Mitosis is assessed at the M checkpoint.
Which of the following organisms lack a hydrostatic skeleton?
A. planarian B. roundworms C. hydra D. earthworms E. cicada
What evidence suggests that RNAi plays a role in heterochromatization?
a) Addition of RNAi components impair both methylation of histone H3K9 and heterochromatization. b) None of the choices is correct. c) Deletion of RNAi components impair both methylation of histone H3K9 and heterochromatization. d) Mutation of RNAi components denatures both methylation of histone H3K9 and heterochromatization. e) Deletion of RNAi components enhances both methylation of histone H3K9 and heterochromatization.