Within a single motor neuron, the direction an
impulse follows is
a. dendrite >>> axon >>> cell body.
b. axon >>> dendrite >>> cell body.
c. dendrite >>> cell body >>> axon.
d. cell body >>> dendrite >>> axon.
e. cell body >>> axon >>> dendrite
C
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Chemotaxis refers to the ability to
A. move in response to light. B. move in response to a chemical. C. not move in response to a chemical. D. transport desired molecules into cell. E. None of the choices is correct.
Which of the following statements about the 5?cap and mRNA processing is TRUE?
A. The addition of a 5? cap to mRNA occurs while the pre-mRNA is being made. B. The 5' cap causes the mRNA to be rapidly degraded. C. The 5' cap prevents the exit of mRNA from the nucleus. D. The 5? cap is added to the pre-mRNA by splicesomes. E. The 5? cap is a group of adenosine molecules.
Paland and Lynch showed that sexual populations possessed fewer deleterious mutations than asexual populations. These results supported the hypothesis that
A. sexual reproduction prevents fertilization with gametes carrying alleles with deleterious alleles. B. sexual reproduction produces fewer random mutations than asexual reproduction. C. asexual reproduction is associated with lower genetic diversity, resulting in the accumulation of highly deleterious mutations. D. in sexual reproduction, the reassorting of alleles allows for the elimination of more detrimental alleles than in asexual reproduction. E. sexual strains are associated with higher genetic diversity and thus accumulate more beneficial mutations than asexual strains.
parts of the large intestine
What will be an ideal response?