Which phrase describes the mechanism that facilitates the passage of electrons between protein complexes in the mitochondrial inner membrane?
a. The oxidized electron carrier protein passes on the electron to FADH and becomes reduced.
b. The reduced electron carrier protein passes on the electron to the next protein and becomes oxidized.
c. The reduced electron carrier protein passes on the electron to FADH and becomes oxidized.
d. The oxidized electron carrier protein passes o
Ans: b. The reduced electron carrier protein passes on the electron to the next protein and becomes oxidized.
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Four of the five answers below are not legitimate prescription drugs. Select the exception
a. barbiturates b. PCP c. nicotine d. cocaine e. alcohol
What is the proton-motive force used for?
a. diffusing substances across membranes and driving movement of flagella in bacteria b. pumping substances across membranes and driving movement of flagella in eukaryotes c. pumping substances across membranes and driving movement of flagella in bacteria d. diffusing substances across membranes and driving movement of flagella in eukaryotes
Cormorants are sea-dwelling birds that consume high levels of salt from the seawater they drink. To get rid of this excess salt, cormorants "sneeze" out the salt that has collected in a localized area near their sinuses. This process is an example of
A) osmoregulation. B) thermoregulation. C) conduction. D) radiation.
Antibody-antigen complexes are targeted by both macrophages and
a. helper T cells. b. B cells. c. complement. d. cytotoxic T cells. e. recombination signal sequences.