Each origin of replication in eukaryotic cells is recognized by an origin recognition complex, which allows the assembly of the prereplicative complex including the replicative helicase. This complex ultimately allows the recruitment of DNA polymerase. After DNA polymerase is recruited to an origin and replicates the DNA in that region during S phase, the replicative helicase cannot be loaded onto the DNA in that region again until early G1 due to a variety of regulatory mechanisms. Why is it important that, once used, the replicative helicase cannot be loaded onto the DNA again until G1 of the cell cycle?
A. This ensures that DNA repair processes can only take place during G1 of the cell cycle.
B. This ensures that DNA cannot be replicated again in that region until the next cell cycle.
C. This ensures that multiple origins must be used to replicate the DNA in all cellular chromosomes.
D. This ensures that telomeres on all chromosomes will be replicated properly.
Answer: B
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The more asymmetric the parental investment is between the sexes:
a. the more radical we expect the sexual dimorphism to be, both physically and behaviorally. b. the more likely it is that a population's mating system is monogamy. c. the more likely it is that the species in question is a bird species. d. the more likely it is that the individuals of the population are long-lived. e. a) and c) are both true.
Archaea are very similar to bacteria and have rigid cell walls made of peptidoglycan
Indicate whether this statement is true or false.
Microbial ________ is an increase in cell constituents that may or may not be accompanied by an increase in cell number.
Fill in the blank(s) with the appropriate word(s).
What is the most likely hypothesis for the presence of TRP channel agonists in plants?
A. to speed up or slow down chemical reactions in the plant B. to warm or cool the plant, depending on the season C. to discourage feeding by herbivorous insects or mammals D. to encourage human cultivation 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 TRP channels? What other information is related to the question? Choose Answer Given what you now know, what information 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?