Normal Aging Changes

question 220

Multiple Choice

Normal aging changes:

• A) begin in late middle age and suddenly get dramatically worse.
• B) gradually progress over years.
• C) start at age 65.
• D) begin during childhood.

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Definitions:

Boiling Point

The temperature at which a substance changes from a liquid to a gas.

Alkanes

Hydrocarbons consisting entirely of single-bonded carbon and hydrogen atoms and are the simplest form of hydrocarbons.

Dimethylpropyl

A hydrocarbon group or moiety consisting of a propyl backbone with two methyl substituents.

Ethyl

An organic functional group or radical derived from ethane, containing two carbon atoms.