Which molecules recognize specific codons and transport amino acids?
A. DNA
B. mRNA
C. rRNA
D. tRNA
Ans: D. tRNA
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Hypoxia
a. causes hypoventilation. b. depletes the tissues of carbon dioxide. c. inhibits the brain's respiratory centers. d. may be the result of changes in altitude. e. results in lowered body temperature
In the Northern Hemisphere, the summer ________ occurs when solar rays fall directly on the Tropic of Cancer
Fill in the blank(s) with correct word
Changes in blood pH can be detected by:
a. interoceptors. b. exteroceptors. c. mechanoreceptors. d. proprioceptors. e. thermoreceptors
A "high-energy bond" in ATP ____.
A. absorbs a large amount of free energy when the phosphate group is attached during hydrolysis B. is formed when ATP is hydrolyzed to ADP and one phosphate group C. is similar to the bonds in glucose molecules D. forms as part of an endergonic reaction E. cannot be readily used in reactions