Select the major waste product of nitrogen metabolism

a. plasma proteins.
b. urea.
c. glucose.
d. PO4.
e. amino acids.


B

Anatomy & Physiology

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The principal ions in extracellular fluid are sodium, chloride, and

A) potassium. B) magnesium. C) phosphate. D) bicarbonate. E) iodine.

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Why does hair turn gray or white in older individuals?

What will be an ideal response?

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The posterior pituitary secretes

A. chiasmatic hormones. B. tropic hormones. C. transcriptional hormones. D. interstitial hormones. E. neurohormones.

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If a red blood cell is 100% saturated, how many molecules of O2 are bound to it?

A. 250 million molecules of O2 B. 4 molecules of O2 C. 1 billion molecules of O2

Anatomy & Physiology