Which of the following is a restriction placed on DNA polymerase?
A. DNA polymerase can attach new nucleotides only in the 5' to 3' direction.
B. DNA polymerases must begin synthesis using an RNA primer.
C. DNA polymerases must have a template strand to copy from.
D. All of these are restrictions of DNA polymerase
D
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Charles Darwin proposed the theory of evolution based on data he collected during:
a. the Beagle expedition. b. the Challenger expedition. c. the observations of Agassiz. d. Alvin's dives. e. his time spent on the rocky coastline of England.
Which of the following is not a form of genetic drift?
A) Founder effect B) Nonrandom mating C) Population bottleneck D) Heterozygote advantage E) All of these are forms of genetic drift.
If you applied a toxin that blocked non-voltage-gated potassium channels (i.e., the potassium "leak channels") in a resting neuron, it would cause the membrane potential to be
A. No change would be observed. B. less negative. C. more negative.
What are the monomers of proteins?
A) Glucose B) Nucleic acids C) Fatty acids D) Amino acids