The Decline in Physical Strength of Older Persons Is Due

question 63

Multiple Choice

The decline in physical strength of older persons is due to

• A)decreased size of fast-twitch fibers.
• B)reduced density of blood capillaries.
• C)reduced muscle mass.
• D)All of the choices are correct.

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Definitions:

Major Organic Product

The most significant result of an organic reaction, characterized by its prevalence and higher concentration over other products.

Wolff-Kishner Reduction

A chemical reaction used to convert carbonyl groups (C=O) into methylene (CH2) groups by treatment with hydrazine (N2H4) and a strong base.

Ketone

An organic compound characterized by a carbonyl group (C=O) bonded to two carbon atoms, common in sugars and fragrances.

Hydrazone

A compound formed by the reaction of a hydrazine with a ketone or aldehyde, characterized by a –NHN=C– linkage.