The major class of macromolecules that stores energy and makes up the major component of plasma membranes are

A. lipids.
B. carbohydrates.
C. nucleic acids.
D. proteins.
E. ions.


A. lipids.

Biology & Microbiology

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Food contaminated with Clostridium botulinum often

A. looks odd. B. smells bad. C. tastes bad. D. appears normal.

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Nitric oxide (NO) serves as a local signal for vasodilation because it ____

a. is broken down quickly b. dissipates quickly c. recycles rapidly in cells d. counteracts the action of oxygen e. blocks adrenergic receptors

Biology & Microbiology

A solute is a ________

a. measure of molecular motion b. dissolved substance c. substance that can release Hydrogen ions d. liquid that can dissolve other substances e. compound that can be dissolved easily in water

Biology & Microbiology

The form of RNA that carries the information from DNA to the site of protein assembly is called:

A) primary mRNA script. B) ribosomal RNA. C) transfer RNA. D) small nuclear RNA. E) messenger RNA.

Biology & Microbiology