Which of the Following Is True of Microbes and Their

question 14

Multiple Choice

Which of the following is true of microbes and their membranes?

• A) They are relatively permeable to protons.
• B) Protons can leak through directly when the difference in intracellular and extracellular pH is very high.
• C) Membrane-permeant organic acids can prevent the leakage of protons.
• D) They are able to change the pH optima of their enzymes.
• E) Acidophiles use Na+/H+ antiporters to remove internal protons.

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Definitions:

Simple Interest

An interest calculation method where the interest charge is based on the original principal amount of a loan or deposit and does not accumulate or compound.

Annum

A term referring to a year, often used in financial contexts to describe periods of time related to investments or contracts.

Variable Interest Rate

An interest rate that can fluctuate over time based on underlying benchmarks or indexes.

Accrued Interest

Interest that has been incurred but not yet paid, typically referring to the interest accumulating on a bond or loan between payment periods.