Silver nitrate is used
A) to treat gonorrhea.
B) to disinfect water.
C) as a mouthwash.
D) in eye drops for newborns.
Ans: D) in eye drops for newborns.
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What may be a result of the denaturation of proteins?
a. formation of hydrogen bonds b. loss of three-dimensional structure c. removal of R groups from amino acids d. no change in enzyme activity e. formation of covalent bonds
Which of the following is not associated with sepsis?
A. Endotoxic shock B. Respiratory acidosis C. Fever and shaking chills D. Drop in blood pressure E. Parenteral or endogenous transfer
The mechanism of action of many common medications involves interfering with the normal pathways that cells use to respond to hormone signals. Which of the following best describes a drug interaction that directly interferes with a signal transduction pathway?
(A) A medication causes the cell to absorb more of a particular mineral, eventually poisoning the cell. (B) A medication enters the target cell and inhibits an enzyme that normally synthesizes a second messenger. (C) A medication enters the target cell's nucleus and acts as a mutagen. (D) A medication interrupts the transcription of ribosomal RNA genes.
Over several generations in a population, inbreeding tends to
A. stabilize the balance of genotypes predicted by the Hardy-Weinberg equilibrium. B. decrease the likelihood of heterozygotes. C. decrease the relative proportions of homozygotes. D. All of the choices are correct.