DNA-binding proteins interact predominantly within which portion of a double-stranded DNA helix?
A) major groove
B) minor groove
C) 3' end
D) supercoil
Answer: A
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Differences between mitochondrial and E. coli electron transport chains include the following:
A. The E. coli chain contains a different array of cytochromes. B. Higher P/O values are observed in E. coli. C. The electron transport chain does not involve membranes in E. coli. D. The fundamental principles on which they operate are different.
Refer to the accompanying figure. The type of neuron labeled as 1 is a(n):
a. motor neuron. b. pyramidal neuron. c. sensory neuron. d. efferent neuron. e. interneuron.
The molecule that contains an anticodon is
A. DNA. B. tRNA. C. mRNA. D. rRNA.
Graft rejection can be reduced by
A) preventing B cell activation. B) antiphagocytic factors. C) antihistimines. D) preventing T cell proliferation. E) epinephrine.