Oxygen and Carbon Dioxide Are Exchanged in the Lungs and Through

question 94

Multiple Choice

Oxygen and carbon dioxide are exchanged in the lungs and through all cell membranes by ________.

• A) active transport
• B) filtration
• C) diffusion
• D) osmosis

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Definitions:

Macronutrient

Nutrients required by organisms in larger amounts for growth and energy, including proteins, carbohydrates, and fats.

Carbohydrates

Organic compounds consisting of carbon, hydrogen, and oxygen, in a ratio of 1:2:1 respectively, serving as a major energy source for organisms.

Lipid

A group of naturally occurring molecules that include fats, waxes, sterols, and fat-soluble vitamins, used for energy storage and cell signaling.

Protein

Large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues, essential for all living organisms.