The extent of complementarity of a miRNA with its target mRNA determines ___________________________
(a) whether the mRNA will be immediately degraded or whether the mRNA will first be transported elsewhere in the cell before degradation.
(b) whether the mRNA will be transported to the nucleus.
(c) whether RISC is degraded.
(d) whether the miRNA synthesizes a complementary strand.
(a)
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The vertebrate spinal cord develops from the embryonic _____
A) notochord B) dorsal hollow nerve cord C) pharyngeal pouch D) coelom E) podia
A reinterpretation of animal phylogeny (differing from morphologically based phylogeny) that was made possible by molecular techniques, was:
A. designation of the Ecdysozoa and Lophotrochozoa as clades B. designation of the Bilateria as a monophyletic group C. designation of annelids and arthropods as closely related D. designation of rotifers and nematodes as closely related E. placement of echinoderms and chordates in entirely different clades
The enzyme responsible for breaking down
alcohol is a. alcohol methylase. b. alcohol polyphosphorylase. c. hydroxyl alcoholgenase. d. transmethylogenase. e. alcohol dehydrogenase
In oxidation-reduction reactions, ____.
A. both molecules give up electrons B. both molecules gain electrons C. cells harvest energy D. the molecule that accepts electrons is reduced E. hydrogen ions are usually absorbed