The Resistance of Bacteria to Certain Antibiotics Is a Current

question 22

Multiple Choice

The resistance of bacteria to certain antibiotics is a current example of

• A) natural variety
• B) artificial selection
• C) un-natural selection
• D) natural selection

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Definitions:

Calcitonin

A hormone produced by the thyroid gland that helps regulate blood calcium levels by lowering them when too high.

Parathyroid Hormone

A substance secreted by the parathyroid glands responsible for controlling blood calcium concentrations and bone metabolism.

Synergistically

In cooperation such that the result or effect is greater than the sum of individual effects.

Digestive Tract

A series of hollow organs joined in a long, twisting tube from the mouth to the anus where digestion and nutrient absorption occurs.