According to the World Health Organization,

approximately how many children around the world
show a vitamin A deficiency?
a. 14 million
b. 24 million
c. 140 million
d. 524 million
e. 724 million


Answer: c

Biology & Microbiology

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he limbic system affects all of the following except:a

sexual behavior. b. motivation. c. evaluating rewards. d. the sleep-wake cycle. e. fighting behavior.

Biology & Microbiology

In a developing human embryo, the hands and feet resemble mittens, with cells and tissues present between the fingers and toes. When a baby is born, these cells are not present, resulting in distinct fingers and toes. In the development of fingers and toes these cells were lost by ____.

A. cell connections B. cell migration C. apoptosis D. cell division E. cell morphology

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Of the following electron carriers of the electron transport system, which transfers protons in addition to electrons?

A) cytochrome a B) cytochrome b C) coenzyme Q D) iron-sulfur proteins E) iron-copper proteins

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Under normal healthy circumstances, the lymphatic system filters any microorganisms present.

Answer the following statement true (T) or false (F)

Biology & Microbiology