Four of the five answers listed below are fat soluble vitamins. Select the exception
a. vitamin A
b. vitamin C
c. vitamin D
d. vitamin E
e. vitamin K
B
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Which is a mechanism by which transposable element mobilization may be controlled by the cell? (Select all that apply.)
A) blocking transcription of transposable element genes B) blocking translation of transposable element transcripts C) alternative splicing of transposable element transcripts D) synthesizing an enzyme that removes transposable elements from the genome E) increasing the mutation rate of transposable element DNA sequences
Of the following four islands at the same
latitude, the one possessing the fewest species is a. 1,000 square kilometers in area and 300 km from the mainland. b. 3,000 square kilometers in area and 100 km from the mainland. c. 100 square kilometers in area and 3,000 km from the mainland. d. 300 square kilometers in area and 1,000 km from the mainland. e. none of these
The secretion of which hormone decreases when calcium blood levels increase?
a. calcitonin b. parathyroid hormone c. thyroid hormone d. epinephrine e. norepinephrine
Cellular respiration is essential to eukaryotic cells because
A) it is a process of anabolic reactions necessary for DNA synthesis. B) it breaks down ATP molecules into ADP and a phosphate. C) the process releases energy from organic substrates. D) it releases energy from anabolic reactions, which then can be used to drive catabolic reactions. E) the process stimulates the catabolism of potentially toxic molecules absorbed during digestion.