Which of the following is not true of miRNA processing?
A. Drosha processes primary miRNA transcripts to precursor miRNAs.
B. RISC binds to pre-miRNA in the cytoplasm.
C. RNA helicase is necessary for unwinding the miRNA duplex.
D. Dicer completes the processing by cleaving the single-stranded form of the miRNA.
D
You might also like to view...
Which of the following is the scientific name for the common mushroom consumed by humans as a food source?
a. Saccharomyces b. Candida c. Agaricus d. Penicillium
The tube-like structures extending from these
bacterial cells to the underlying cells in the above figure are used for a. attachment. b. locomotion. c. whipping up proteins. d. breathing. e. communication.
Compare and contrast receptor tyrosine kinase (RTK) signaling pathways such as the EGF–Ras–MAPK pathway with serine/threonine kinase (S/TK) signaling pathways such as the TGF? pathway with respect to (a) receptors, (b) phosphorylation targets,
(c) signal transduction from the plasma membrane through the cytoplasm to the nucleus, and (d) effects on gene regulation. What will be an ideal response?
You are asked to give a classroom demonstration of DNA supercoiling. To do so, you take two different colored pieces of rubber tubing, twist them very tightly and excessively around each other and join the ends of the tubing appropriately. Next, you relieve the supercoiling by breaking one strand and unwinding it. In this demonstration, the breaking and unwinding to relieve the supercoiling simulates the action of
A. ligases. B. primases. C. topoisomerases. D. polymerases. E. exonucleases.