Generation of proton gradients across membranes occurs during
A) photosynthesis.
B) respiration.
C) both photosynthesis and respiration.
D) neither photosynthesis nor respiration.
E) photorespiration.
Ans: C) both photosynthesis and respiration.
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Which of the following is not a potential mode of alternative splicing?
a. alternative 3? splice sites b. alternative branch points c. mutually exclusive exons d. alternative 5? splice sites e. exon inclusion/skipping
One property that distinguishes cells in Domain Eukarya from those in Domain Bacteria is the presence of
A. a cell wall. B. DNA. C. flagella. D. membrane-bounded organelles.
Which organelle receives proteins and lipds from the ER, modifies them, and then dispatches them to other destinations in the cell?
A.) peroxisome B.) nucleus C.) endosome D.) golgi aparatus E.) mitochondrion
Why has finding an effective AIDS vaccine been so difficult?
A. Because it is caused by a virus. B. Because they have not yet isolated the virus that causes AIDS. C. Because the virus constantly mutates and so vaccines need to be made for all types. D. It is a sexually transmitted virus. E. The body does not make antibodies against the virus.