Molecules called uncouplers allow protons to cross the inner mitochondrial membrane, which decreases the proton gradient potential. Consequently, ATP production in the mitochondria would
A. not change, because protons cross the outer mitochondrial membrane to produce ATP.
B. increase, because this would spontaneously establish a proton gradient for powering ATP synthase.
C. decrease, because the proton gradient, for powering ATP synthase, would dissipate.
D. increase, because this would make more oxygen available in the mitochondrial matrix.
E. decrease, because electrons would not be able to move through the electron transport chain.
C. decrease, because the proton gradient, for powering ATP synthase, would dissipate.
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Which of the following is true of the leucine-zipper structural motif?
A. It contains several evenly spaced leucine residues that make specific DNA contacts. B. It is made up of a single alpha-helix. C. It is often used to mediate protein-protein interactions. D. It is only found in bacterial proteins.
Graded potentials are particularly important for conveying stimulus intensity in
A. sensory neurons. B. motor neurons. C. interneurons. D. skeletal muscle cells. E. Schwann cells.
The quick response of the immune system to a second infection is due to
A. activation of macrophage cells. B. suppression of suppressor cells. C. T and B memory cells. D. high levels of antigen. E. new cytotoxic T cells.
You have the amino acid sequence of a protein and wish to search for the gene encoding this protein in a DNA library. Using this protein sequence, you deduce a particular DNA sequence that can encode this protein
Why is it unwise to use only this DNA sequence you have deduced as the probe for isolating the gene encoding your protein of interest from the DNA library?