The correct structure of DNA components can be presented as
Phosphate - base- sugar
Phosphate - sugar - base
Base - phosphate- sugar
Phosphate - sugar - phosphate - base
Base - sugar - phosphate - base
Phosphate - sugar - base
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Articular surfaces called occipital __________ lie on either side of the foramen magnum and facilitate nodding of the head.
Fill in the blank(s) with the appropriate word(s).
Epinephrine (or norepinephrine) is secreted by which of the following structures?
a. Cortex of kidney b. Cortex of adrenal glands c. Medulla of adrenal glands d. Medulla of nephron
The primary immune response:
A) has a shorter lag phase than the secondary immune response. B) produces peak antibody levels rapidly (1-3 days). C) primarily involves the antibody IgG. D) occurs after the first exposure to an antigen.
The oval, three-layered sheet produced by gastrulation is called the
A) embryo. B) ectoderm. C) inner cell mass. D) embryonic disc. E) yolk sac.