What happens in an electron transport chain?
a. Electrons move from a low energy level to
a higher energy level.
b. Electron movement generates energy which
can be harvested.
c. Electrons combine with hydrogen ions to
generate electron carriers, like NADH.
d. Energy is consumed.
e. The energy generated is used to break down
coenzymes like NADH and ATP
B
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The cowbird chick with its foster parent exemplifies an example of ____
a. commensalism b. brood parasitism c. competition d. mutualism e. parasitoidism
Where did humans first appear?
A) South America B) Africa C) Asia D) Europe
How often must the competency of laboratory staff be evaluated
A. After 6 months of employment and annually thereafter B. Anually C. Every three months for the 1st year and anually thereafter D. in the first three months after hire
A phosphorus shortage in soil would make it difficult for plants to produce
A. amylose B. cellulose C. DNA D. starch