What endogenous process helps plants to keep their movements and other responses synchronized with the environment?
A. gravitropism
B. purine monitoring
C. solar tracking
D. a circadian clock
E. auxin cycling
Answer: D
Biology & Microbiology
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For animals, the final hydrogen acceptor in
cellular respiration is a. NADP+. b. sulfur. c. oxygen. d. magnesium. e. phosphorus
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High-density lipoproteins (HDLs) deposit cholesterol on the endothelial surfaces of blood vessels and contribute to atherosclerotic plaque formation.
a. true b. false
Biology & Microbiology
All of the following contain amino acids except:
What will be an ideal response?
Biology & Microbiology
What makes each amino acid unique?
A. the central carbon B. the R group C. the carboxyl group D. the carbon ring E. the amino group
Biology & Microbiology