If you applied a toxin that blocked non-voltage-gated potassium channels (i.e., the potassium "leak channels") in a resting neuron, it would cause the membrane potential to be
A. less negative.
B. more negative.
C. No change would be observed.
A. less negative.
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The invariant amino acids in each peptide motif bound by MHC proteins are called
A) anchor residues. B) MHC peptides. C) antigen-binding immunoglobulins. D) TCR peptides.
The process that destroys or removes all microorganisms and microbial forms, including bacterial endospores, on inanimate objects is ________.
A. degermation B. disinfection C. antisepsis D. sanitization E. sterilization
The major divisions of the peripheral nervous system are the ____.
A. somatic and autonomic systems B. sympathetic and parasympathetic systems C. peripheral and central systems D. afferent and autonomic systems E. cranial and skeletal nerves
In the Arabidopsis cdka;1 mutant the central cell of the female gametophyte is not fertilized. What structure will not form in these mutant plants?
A. endosperm B. pollen tube C. synergids D. egg cell