One microenvironment of the skin is an area where glands produce an oily substance called

A) mucus.
B) sebum.
C) fimbrae.
D) lipid A.


Answer: B

Biology & Microbiology

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Indicate whether the statement is true or false.

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In a mycorrhizal association, the fungus benefits mainly by ____

a. absorbing water from the plant b. using the plant roots as a growth surface c. absorbing mineral ions from the plant d. providing water to the plant e. absorbing carbohydrates from the plant

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A hydrolysis reaction results in ____.

A. bond formation of a macromolecule B. bond breakage of a macromolecule C. lipid molecule creation D. nucleic acids creation E. most macromolecules

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Which factor, beginning in 1995, is responsible for the decline in chicken pox from a routine childhood disease to a rare infection?

A) ecological changes affecting the natural reservoir of the virus B) routine vaccination C) natural evolution of the virus to a less virulent form D) development of effective anti-viral medications E) changes in global migration patterns

Biology & Microbiology