When compared to polypeptides synthesized in vitro on free ribosomes, the polypeptides synthesized from the same mRNA on microsome-bound ribosomes often are
a. the same size.
b. larger.
c. smaller.
d. more hydrophobic.
Ans: b. larger.
Biology & Microbiology
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The name of the enzyme used by Nirenberg and Matthaei to synthesize RNA primers to direct in vitroprotein synthesis using cell extracts is:
A. polynucleotide phosphorylase. B. ribonucleotide synthetase. C. ribonucleotide reductase. D. deoxyribonuclease.
Biology & Microbiology
What type of plants are usually seedless?
A. Aneuploid B. Diploid C. Triploid D. Tetraploid
Biology & Microbiology
Land plants, or embryophytes, are close relatives of __________, a kind of green algae. Fill in the blank(s) with the appropriate word(s)
Biology & Microbiology
Protostomes develop through
A. polar cleavage. B. protocleavage. C. spiral cleavage. D. radial cleavage. E. axial cleavage.
Biology & Microbiology