In a Survey of 186 Societies, What Percent of Older

question 98

Multiple Choice

In a survey of 186 societies, what percent of older children reported being principal caregivers to younger siblings?

• A)57%
• B)23%
• C)85%
• D)5%

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Definitions:

Smooth Muscle

A type of muscle found in the walls of internal organs, such as the stomach and blood vessels, that contracts involuntarily.

Calcium-Calmodulin Complex

A complex formed when calcium ions bind to the protein calmodulin, playing a key role in various cellular processes.

Myofibrils

The basic rod-like unit of a muscle cell, composed of sarcomeres, which are responsible for the muscle's contractile properties.

Sarcomeres

The basic contractile units of muscle fiber, defined by the region between two Z lines, responsible for muscle contraction.