Identical Human Twins Have Similar Weights, Even When They Are

question 1

Multiple Choice

Identical human twins have similar weights, even when they are reared apart. This indicates

• A) the important role nutrition plays in obesity.
• B) how lifestyle is instrumental in determining an individual's weight.
• C) the genetic component of a person's weight.
• D) how a person's weight cannot be traced to genetic factors.

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Definitions:

External Respiration

The process of gas exchange between the environment and the body, involving the intake of oxygen and release of carbon dioxide via the lungs.

Cellular Respiration

The process by which cells break down glucose and other molecules to release energy in the form of ATP.

Gases Exchange

The biological process through which gases like oxygen and carbon dioxide are transferred between organisms and their environment.

Breathing

The process of inhaling and exhaling air to facilitate gas exchange within the lungs.