Which of the following substances is NOT required at some point during photosynthesis?
a. H2O
b. O2
c. NADP
d. ADP
e. ATP
B
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A mechanism for penicillin resistance in bacteria is
A) acetylation of the antibiotic. B) phosphorylation of the antibiotic. C) confirmation change of the antibiotic. D) splitting the ?-lactam ring of the antibiotic.
Secondary protein structure is dependent on
a. hydrophobic interactions. b. hydrogen bonds between two amino acids. c. covalent linkages between carbons and nitrogens of adjacent amino acids. d. covalent linkages between carbons and oxygens of adjacent amino acids. e. all of these.
What purpose does mucus serve?
Which of the following statements about the protein quality control system in the ER is false?
(a) Chaperone proteins help misfolded proteins fold properly. (b) Proteins that are misfolded are degraded in the ER lumen. (c) Protein complexes are checked for proper assembly before they can exit the ER. (d) A chaperone protein will bind to a misfolded protein to retain it in the ER.