Negatively charged subatomic particles that have almost no mass are called:
A. protons.
B. ions.
C. electrons.
D. polymers.
E. neutrons.
Answer: C
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In the figure shown above, identify the bond that is cleaved when this molecule is coupled with an
endergonic reaction to drive the endergonic reaction to completion. (The molecule of water also required for this reaction is not shown.)
a. A b. B c. C d. D e. E
Which of the following arose before all of the others listed here?
a. crocodiles b. lizards c. turtles d. snakes
Which one of the following statements CORRECTLY compares the effects of a mutation in a gamete to the effects of a mutation in a somatic cell?
A) Somatic cell mutations always cause cancer, whereas gamete mutations do not. B) Gamete mutations are passed to the next generation, whereas somatic cell mutations are not. C) Gamete mutations are typically deadly, whereas somatic cell mutations are not. D) Somatic cell mutations are typically deadly, whereas gamete mutations are not. E) Mutations in both types of cells usually result in cancer.
FRAP has revealed that some proteins movement is restricted in cell membranes much more than in artificial bilayers. Which of the following could account for limited mobility of proteins in cell plasma membranes?
a. anchorage to the cell cytoskeleton. b. anchorage to the extracellular matrix. c. associations with other proteins. d. diffusion barrios e. all could limit protein mobility