Intestinal cells absorb glucose via active transport. What would happen if all the mitochondria within these intestinal cells were destroyed?
a. Glucose absorption would increase
b. Glucose absorption would decrease
c. Glucose absorption would stop
d. Glucose absorption would stop
Ans: b. Glucose absorption would decrease
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Duplicated centrioles move to opposite poles of a(n) ____ cell during ____ of the cell cycle
a. animal; prophase b. plant; prophase c. animal; metaphase d. plant; metaphase e. both animal and plant cells; prophase
What is lost when acetyl-CoA enters into the Krebs cycle?
a. pyruvate b. coenzyme A c. fructose bisphosphate d. oxaloacetate e. citrate
Which one of the following is true with regard to the numbers of subatomic particles in an atom?
A. The number of neutrons always equals the number of protons. B. The number of electrons always equals the number of neutrons. C. The atomic number always equals the number of protons. D. The atomic number always equals the number of neutrons.
The active site of an enzyme is
A) the region of a substrate that is changed by an enzyme. B) the highly changeable portion of an enzyme that adapts to fit the substrates of various reactions. C) the region of an enzyme that attaches to a substrate. D) the region of a product that detaches from the enzyme.