What is the purpose of vitamins in the human body?
A) Vitamins are sources of stored energy.
B) Vitamins help enzymes function properly.
C) Vitamins act as hormones that trigger cells to take up glucose.
D) Vitamins are the basis of the plasma membrane.
B
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How many electrons are needed to reduce one molecule of NADP+ to NADPH?
a. 1 b. 2 c. 3 d. 4 e. 5
Which of these worms are segmented?
A. annelids B. planarians C. roundworms D. flukes E. All worms are segmented
The control in an experiment _______.
A. makes the experiment valid B. is an additional replicate for statistical purposes C. reduces the experimental errors D. minimizes experimental inaccuracy E. allows for comparisons to the experimental group
Selection that favors altruism directed towards relatives is referred to as ________.
Fill in the blank(s) with the appropriate word(s).