The rate of conduction of a nerve impulse depends upon
A) the number of cell dendrites.
B) properties of the soma of the neuron.
C) the presence or absence of a myelin sheath.
D) the type of neurotransmitter present.
E) All of the answers are correct.
C) the presence or absence of a myelin sheath.
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The genotypes and phenotypes that result from the cross of Aa and Aa (A = normal pigmentation and a = albinism) are
A. phenotypes:25% normal and 75% albino; genotypes:25% homozygous dominant and 50% heterozygous and 25% homozygous recessive. B. phenotypes:50% normal and 50% albino; genotypes:all homozygous recessive. C. phenotypes:75% normal and 25% albino; genotypes:25% homozygous dominant and 50% heterozygous and 25% homozygous recessive. D. phenotypes:50% normal and 50% albino; genotypes:50% homozygous recessive and 50% homozygous dominant.
Motor commands are carried by __________ from the brain along the spinal cord.
A. both anterior and posterior roots B. ascending tracts C. spinal nerves D. cranial nerves E. descending tracts
After coming off a ribosome, several things can happen to the newly synthesized protein. Name three.
What will be an ideal response?
Which of the following hormones influence the release of pancreatic juice and bile?
A) rennin and cholecystokinin (CCK) B) gastrin and rennin C) cholecystokinin (CCK) and gastrin D) secretin and gastrin E) cholecystokinin (CCK) and secretin