The least oxygenated blood is indicated by the letter ____

a. A
b. B
c. C
d. D
e. E


ANSWER: e

Biology & Microbiology

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Based on the figure above, showing fetal (A) and adult (B) oxygen-hemoglobin saturation curves, which of the following conclusions is true?

A) The mother binds oxygen with greater affinity than the fetus. B) Adult saturation occurs at lower partial pressures of oxygen than fetal saturation does. C) At 50 percent saturation, fetal blood will have a higher affinity for oxygen than adult blood will. D) As the partial pressure of oxygen increases, adult hemoglobin approaches saturation faster than fetal hemoglobin does.

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Menstrual flow begins in response to:

a. rising levels of FSH and LH b. falling levels of estrogen only c. falling levels of progesterone only d. falling levels of estrogen and progesterone e. rising levels of LH and falling levels of FSH

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What are the three layers of the human eye?

What will be an ideal response?

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What is the hydrogen ion (H+) concentration of a solution of pH 8?

A) 8 M B) 8 x 10-6 M C) 10-8 M D) 10-6 M

Biology & Microbiology