In order to fit the X-ray crystallographic data, the two DNA strands must be ____ to each other
a. complementary
b. uncomplementary
c. parallel
d. antiparallel
e. semiconservative
d
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A possible sequence of nucleotides in the template strand of DNA that would code for the polypeptide sequence phe-leu-ile-val would be _____
A) TTG-CTA-CAG-TAG B) AAC-GAC-GUC-AUA C) AUG-CTG-CAG-TAT D) AAA-AAT-ATA-ACA E) AAA-GAA-TAA-CAA
Where did Earth's atmosphere originate?
a. Earth's gravity trapped gases from passing comets. b. Gases were released from Earth itself as it cooled. c. Earth’s gravity trapped gases from Earth itself. d. Earth’s gravity trapped gases from passing comets, gases were released from the Earth itself as it cooled, and Earth’s gravity trapped gases from the Earth itself. e. Gases were released from Earth itself as it cooled Earth’s gravity trapped gases from the Earth itself.
Compared to the nervous system, the endocrine system responds:a
more quickly but may have longer-lasting effects. b. more quickly and may have more short-term effects. c. more slowly and may have longer-lasting effects. d. more slowly but may have more short-term effects. e. about the same and has similar effects.
An entire cell cycle can be completed in about ________
A) 48 hours B) 1 week C) 24 hours D) 1 to 2 hours