Which of the following helps to create the electric gradient?
a. negatively charged proteins
b. positively charged proteins
c. neutral proteins
d. cholesterol in the cell membrane
e. hydrogen ions in the cytoplasm
A
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The toxicity of a given drug is expressed as the
A. selective toxicity. B. biocide index. C. biostatic index. D. therapeutic index
What does the pattern of inheritance in this pedigree indicate about the disease allele?
A) The disease allele is recessive.
B) The disease allele is dominant.
C) There is no indication that the disease allele is either dominant or recessive.
D) The disease allele is not inherited but arises only by a new mutation in affected individuals.
If the vas deferens tubes are cut and tied (vasectomy), the semen will not contain:
a. fructose b. buffers c. mucus d. sperm e. any secretions
In the classic argument of ‘nature vs. nurture’,
nature would most correspond with:a. genes. b. environment. c. divine intervention. d. environment and genes. e. genes, environment, and genes