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

Anatomy & Physiology

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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

Anatomy & Physiology

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.

Anatomy & Physiology

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).

Anatomy & Physiology

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.

Anatomy & Physiology