Which functional groups have been altered in a ddNTP compared to a dNTP?
A) The ddNTPs have a 2? OH and a 3? H, while dNTPs have a 2? H and a 3? OH.
B) The ddNTPs have a 2? H and a 3? H, while dNTPs have a 2? H and a 3? OH.
C) The ddNTPs have a 2? OH and a 3? OH, while dNTPs have a 2? H and a 3? H.
D) The ddNTPs have a 2? H and a 3? H, while dNTPs have a 2? OH and a 3? OH.
E) The ddNTPs have a 2? H and a 3? OH, while dNTPs have a 2? H and a 3? H.
B
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Which of the following can control mRNA stability?
A. The stop codon that is used to terminate translation in the mRNA B. AU rich elements in the mRNA C. distance of the stop codon to the polyA tail D. number of A's in polyA tail
A(n) ________ is the ring of cytoplasm lining the plasmodesmata.
Fill in the blank(s) with the appropriate word(s).
The transition of the early earth’s atmosphere from
one rich in hydrogen to one rich in oxygen may be attributed to a. photosystem II. b. photosystem I. c. the cyclic pathway of photosynthesis. d. the light-independent reactions. e. the activity of the electron transfer chain.
Lactic acid is formed by combining
A. pyruvic acid and hydrogen. B. CO2 and hydrogen. C. ethyl alcohol and hydrogen. D. pyruvic acid and oxygen.