#Question id: 4085
#Unit 3. Fundamental Processes
When TAT protein fails to bind to the TAR region of the HIV transcript, which of the following statements is (are) true?
#Question id: 4086
#Unit 3. Fundamental Processes
RNA interference
a. utilizes antisense RNA.
b. utilizes double-stranded RNA.
c. is used to silence expression of genes.
d. utilizes short interfering RNAs.
#Question id: 4087
#Unit 3. Fundamental Processes
Polyadenylation can promote translation
a. of the fragile-X gene.
b. of stored oocyte mRNAs.
c. by allowing for greater interaction at the 5´ end.
d. by allowing for greater interaction with translation initiation factors.
#Question id: 4088
#Unit 3. Fundamental Processes
The 28S, 18S, and 5.8S rRNAs are
a. transcribed by RNA polymerase II.
b. encoded by a single transcription unit.
c. arranged in tandem arrays.
d. processed in the cytoplasm.
#Question id: 4089
#Unit 3. Fundamental Processes
An investigator incubates an unprocessed RNA molecule containing an intron in an extract absent of any protein. Correct splicing of the RNA is observed, but only when guanosine is present. What can the investigator conclude about the RNA molecule?
a. It contains a ribozyme.
b. Self-splicing has occurred.
c. It contains a group II intron.
d. It contains a group I intron.
#Question id: 4090
#Unit 3. Fundamental Processes
Tryptophan synthesis can be controlled by a process called attenuation in which the levels of tryptophan in the cell control translation by