The chemical behavior of an atom is determined by most directly by the:a

atomic number.
b. atomic weight.
c. number of energy levels.
d. number of valence electrons.
e. number of neutrons.


D

Biology & Microbiology

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Otto Loewi demonstrated that neurons transmit signals across synapses

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_________ can be used to disinfect water, food, and surfaces.

A) Chlorine compounds B) Phenols C) Alcohols D) Hydrogen peroxide

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Individuals medically diagnosed with "dry eyes" experience feelings of dryness, itchiness, burning, and general irritation in their eyes. Dry eyes can be caused by a decreased production of tears by the tear-producing glands in the eyes. What treatment would help alleviate dry eyes?

A) stimulating production of aqueous humor B) blocking the eyelid openings used to drain tears C) stimulating production of vitreous humor

Biology & Microbiology

The body’s internal environment is synonymous with extracellular fluid.

Indicate whether the statement is true or false

Biology & Microbiology