Complete oxidation of glucose to CO2 involves two different mechanisms for synthesizing ATP, oxidative phosphorylation and substrate-level phosphorylation. Which is true of substrate-level phosphorylation?
A. An enzyme catalyzes the transfer of a
phosphate group to ADP from an organic
molecule to form ATP.
B. Most of the ATP generated in cellular
respiration is generated by substrate-level
phosphorylation.
C. ATP is generated indirectly through the
transfer of high-energy electrons from
electron carriers to an electron transport
chain.
D. ATP is generated by release of energy
from the electron carriers NADH and FADH2.
A
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Imagine you are comparing the nutrient content of phloem sap from two plants: one with mycorrhizae and one without mycorrhizae. How would you expect the nutrient content of these two phloem samples to differ?
A. Phloem sap from the mycorrhizae sample will have more phosphorus. B. Phloem sap from the non-mycorrhizae sample will have more phosphorus. C. Phloem sap from the mycorrhizae sample will have less phosphorus. D. The amount of phosphorus will be the same in both samples.
In synaptic signaling, neurotransmitters are released into a space that is referred to as a:
A. chemical synapse. B. neuron junction. C. paracrine space. D. gap junction. E. plasmodesmata.
The nodules found in the roots of legumes characteristically contain mycorrhizae. Indicate whether the statement is true or false
Which of the following is not an effect of protein denaturation?
A. cooked egg whites B. prion disease C. egg whites beaten to stiff peaks D. tenderized meat using acid E. melting butter by heating