Laboratory Experiments Are Designed So as to

question 22

Multiple Choice

Laboratory experiments are designed so as to

• A) control for confounding variables
• B) establish external validity
• C) be as close as possible to a real-life experience
• D) justify keeping rats and pigeons in the department

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Definitions:

Blood Cells

Cells that circulate in the blood, integral for transporting oxygen, fighting infections, and performing other vital functions; include red blood cells, white blood cells, and platelets.

Allergic Reaction

An immune system response to a foreign substance that's not typically harmful to your body, such as pollen, bee venom, pet dander, or certain foods.

Foreign Proteins

These are proteins that are recognized by the immune system as potential threats, originating outside the organism.

Hypersensitivity

An exaggerated or inappropriate immune response to a foreign substance.