Valium is a drug that causes voltage-gated Cl? channels to open. What effects would this cause in a
postsynaptic membrane?
What will be an ideal response?
Valium would cause hyperpolarization in the postsynaptic membrane. Thus, it would take more
frequent, or a greater number, of EPSPs to generate an action potential in a postsynaptic membrane.
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A molecule that binds to an enzyme at a location other than the active site and thereby alters the enzyme's shape, making it inactive or less active is a(n) ________ inhibitor.
Fill in the blank(s) with the appropriate word(s).
Symptoms of phenylketonuria (PKU) may be minimized or suppressed by a diet low in
a. serine. b. glycine. c. phenylalanine. d. proline. e. glutamic acid.
Most types of communication between cells utilize _____
A) the exchange of cytosol between the cells B) the movement of the cells C) chemical or electrical signals D) the exchange of DNA between the cells
The AUC and AUA codons in mRNA both specify isoleucine. What feature of the genetic code explains this?
a.) complementarity b.) nonsense codons c.) universality d.) degeneracy