Choose All That Apply

question 1

Multiple Choice

Choose all that apply.A concentration gradient is exhibited when

• A)the room temperature is 34 degree Celsius and the outside air is 34 degrees Celsius.
• B)intracellular fluid has 5% solute and extracellular fluid has 0.8% solute concentration.
• C)during rest,muscle and liver cells contain high glycogen concentration and blood contains lower concentrations.
• D)the pCO₂ changes from 45 to 35 mmHg in the alveoli of lungs.

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Definitions:

Stimulant

A substance that raises levels of physiological or nervous activity in the body, often used therapeutically to increase alertness or physical performance.

Depressant

A substance that reduces the functioning of the nervous system, often used to decrease anxiety and induce sleep.

Narcotic

A class of substances that relieve pain and induce a state of sleep or stupor; often associated with opioids, which can be both legal medications and illicit drugs.

Barbiturates

A class of drugs that are used as sedatives and hypnotics, which can depress the central nervous system.