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