The myelin sheath of peripheral neurons
a. is formed by Schwann cells.
b. speeds up the transmission of impulses.
c. does not surround all neuron axons.
d. is interrupted along the axon by nodes.
e. includes all of these descriptions.
Answer: e
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A) In the cytoplasm only B) On the rough endoplasmic reticulum only C) On the smooth endoplasmic reticulum and in the cytoplasm D) On the rough endoplasmic reticulum and in the cytoplasm
In response to gonadotropin releasing hormone (GnRH), the anterior pituitary secretes:
a. estrogen or testosterone b. sex stimulating hormone c. progesterone d. leutinizing hormone and follicle-stimulating hormone e. prolactin
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a. is found in females. b. is found in males. c. carries different genes than the Y chromosome. d. interacts with a Y chromosome as homologues during meiosis. e. fits all of these descriptions.
The active site is a part of the
A. enzyme. B. inhibitor. C. substrate. D. end product.