In the first step of glycolysis, glucose can be phosphorylated to glucose-6-phosphate, because
A) a phosphoanhydride bond has higher energy of hydrolysis than is required for formation of a phosphoester bond.
B) transfer of a phosphate from ATP to glucose is endergonic.
C) the reaction does not require an enzyme.
D) the reaction is highly reversible.
E) All of the above are correct.
Answer: A
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Predict what would happen to a neuron's resting membrane potential if the number of sodium leak channels increased
A. The membrane potential would remain the same due to the activity of the sodiumpotassium pump. B. The membrane potential would become more negative. C. The membrane potential would become more positive. D. The membrane potential would become slightly more negative.
Water typically makes up about what percentage of a plant?
A. 80% B. 50% C. 90% D. 100% E. 40%
What do gymnosperms and angiosperms have in common?
A. Flowers B. Spores C. Seeds D. None of these
Photosynthesis is an important process that
A) is performed by heterotrophs. B) produces oxidized products. C) uses water and carbon dioxide as reactants. D) is performed by organisms living near deep-ocean thermal vents. E) only plants can perform.