What Gas Makes Up Approximately 1/5th of Ordinary Air and Is

question 40

Multiple Choice

What gas makes up approximately 1/5th of ordinary air and is used by cells to release energy from food substances?

• A) Oxygen
• B) Carbon dioxide
• C) Hydrogen
• D) Nitrogen
• E) Helium

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Definitions:

Sphygmomanometers

Instruments used to measure blood pressure, typically consisting of a cuff, gauge, and a mechanism for inflation.

Hyperpnea

An increased depth and rate of breathing, often in response to exercise or the body's need for more oxygen.

Aneroid Sphygmomanometers

A type of blood pressure monitor that uses a mechanical gauge without the need for mercury to measure blood pressure.