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Which of These Is Considered a "Gatekeeper" That Regulates the Passage

question 45

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Which of these is considered a "gatekeeper" that regulates the passage of materials in or out of the cell?


Definitions:

Antecubital Space

The inner side or bend of the elbow; the site at which the brachial artery is felt or heard when a pulse or blood pressure is taken.

Rapid Breathing

Breathing at an abnormally fast rate, which can be a symptom of various medical conditions or distress.

Degrees Celsius

A scale and unit of measurement for temperature where water freezes at 0 degrees and boils at 100 degrees under standard conditions.

Fahrenheit

One of two common scales used for measuring temperature; measured in degrees Fahrenheit, or °F.

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