Why are single-stranded binding proteins necessary for DNA replication?
A. They provide the energy necessary to
separate the two strands of DNA.
B. They prevent the two parental strands from
coming together again.
C. They direct the primase where to lay down
the primer.
D. They direct where replication will start.
E. None of the answer options are correct.
B
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Which of the following refers to the level of depolarization at which an action potential will be triggered?
A. resting potential B. membrane potential C. cationic potential D. refractory potential E. threshold potential
A species has n=4 chromosomes. Genes on the same chromosome have a maximum recombination recombination rate of:
a. 100% b. 75% c. 50% d. 25% e. 0%
The ________ definition of species says that a species is a group of organisms that are reproductively isolated from other such groups.
Fill in the blank(s) with the appropriate word(s).
The "occupation" of a species in an area is identified as its:
A) habitat. B) niche. C) community. D) population.