What would happen to protons that reenter the mitochondrial matrix?
a. They are attached to NAD+ and FAD.
b. They combine with oxygen to form water.
c. They synthesize ATP by substrate-level phosphorylation.
d. They help in the production of CO2.
e. They regenerate Coenzyme A.
B
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In the digestive system of animals, proteins called amylases and proteases break down large molecules (for example, starches or proteins) into smaller ones so that they can be absorbed by the intestine
What category of protein function do these proteins fall into? A. Cell shape or organization B. Transport C. Movement D. Cell signaling E. Cell surface recognition F. Enzymes
In the example above, what is the probability
that this couple will have a normal child?
a. 0 b. 1/4 c. 1/3 d. 2/3 e. 1/2
Microorganisms that live in severe habitats, such as very hot, acidic or salty environments, are called
A. thermophiles. B. barophiles. C. extremophiles. D. halophiles. E. psychrophiles.
How does a macrophage (immune cell) consume a bacteria?
A. exocytosis B. pinocytosis C. receptor-mediated endocytosis D. endocytosis E. phagocytosis