Which of the following is a function of the nucleolus?
A) to act as the site of DNA synthesis
B) to allow mRNA to leave the nucleus
C) to synthesize messenger RNA
D) to attach polysaccharides to protein molecules
E) to synthesize ribosomal RNA
Answer: E
You might also like to view...
Which of the following is not true of the lac operon?
A. Transcription produces a single polycistronic mRNA containing the lacZ, lacY, and lacA genes. B. The lacI gene is controlled from the same promoter as the lacZ gene. C. The Lac repressor protein is constitutively expressed. D. The operator region regulates transcription through interaction with the Lac repressor protein.
In this depiction of transcription, the ____
strand is ____ because it ____. a. upper; RNA; is single-stranded. b. lower; RNA; contains uracil. c. lower; RNA; contains thymine. d. upper; RNA; has no uracil (U). e. lower; DNA; contains adenine (A).
Eukaryotic chromosomes are composed of a complex of 60% protein and 40% DNA. This complex is referred to as
A. the histone complex B. the kinetochore C. chromatin D. cohesin
Organisms that grow near deep-sea volcanic vents are likely to be ________.
A. psychrotrophic B. psychrophilic C. thermophilic D. mesophilic