RNA generally functions as a regulator by
a. base-pairing with a single-stranded region.
b. influencing ribosomal activity.
c. recruiting proteins to gene promoters.
d. catalyzing biochemical reactions.
e. participating in chromatin remodeling.
Ans: a
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The part of a membrane protein that extends through the phospholipid bilayer is primarily composed of amino acids that are
A. highly polar. B. negatively charged. C. non-polar. D. positively charged. E. water soluble.
In a mutation,
a. the new codon may specify a different amino acid but may not change the function of the new protein produced. b. the new codon may specify the same amino acid as the old codon. c. the new codon and resulting amino acid may destroy the function of the protein specified. d. the new codon may specify no amino acid. e. all of these may be true.
Energy drinks contain several components, including caffeine, that are advertised to boost your energy levels. If you drink several of these caffeine-containing energy drinks in a short period of time, you feel the sensation to urinate. Why?
What will be an ideal response?
What level of taxonomy is Caudatum Cells cylindrical long, and pointed at one end?
A) Kingdom B) Family C) Phylum D) Genus E) Species