The skin microbiome is NOT affected by
a. hygiene.
a. nutrition.
b. location on the skin.
c. weather.
d. antibiotics.
Answer: D
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Troponin is a complex of three polypeptide chains called ________, ________, and ________.
Fill in the blank(s) with the appropriate word(s).
In the United States, the smallest percentage of the labor force is engaged in
A) primary activities. B) secondary activities. C) tertiary activities. D) quaternary activities.
Each of the following is true about Ras except
A) Ras is monomeric. B) Ras activity is inhibited by GTPase activating proteins (GAPs). C) Ras binds steroid hormones. D) Ras is activated by Sos, a guanine nucleotide exchange factor. E) Ras activates a cascade of phosphorylation events within the cell.
Flagella occur in both prokaryotes and eukaryotes. Which of the following statements DOES NOT describe how the flagella of prokaryotes and eukaryotes differ?
A. Eukaryotic flagella have the motor protein dynein whereas the prokaryotic one does not. B. Eukaryotic flagella have microtubules in a cytoskeleton whereas prokaryotic ones do not. C. The filament of eukaryotes is multilayered whereas that of prokaryotes is a single strand. D. Prokaryotic flagella have a basal apparatus and hook that rotates the filament whereas eukaryotic flagella do not. E. The eukaryotic flagellum is covered by the plasma membrane whereas that of the prokaryotes is not.