About how long does the average red blood cell live?

a. 4 days
b. 4 weeks
c. 4 months
d. 1 year
e. 4 years

C

Biology & Microbiology

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Glycolysis depends upon a continuous supply

of NAD+ and a. NADP. b. pyruvate. c. glucose. d. NADH. e. H2O.

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Which is NOT a compound?

a. salt (NaCl) b. a carbohydrate (contains C, H and O) c. carbon (C) d. a nucleotide (contains P, C, H, and O) e. methane (CH4)

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Certain appendages of insects evolved into broad,

thin extensions for the purpose of a. walking. b. flight. c. feeding. d. copulation. e. swimming.

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The type of leaf arrangement in Figure 34-1 is characteristic of:

a. ashes.
b. maples.
c. catalpas.
d. beeches.
e. buckeyes.

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