Which Statement Describes a Physical Change

question 67

Multiple Choice

Which statement describes a physical change?

• A)winding an alarm clock
• B)turning on a flashlight
• C)digesting your lunch
• D)burning the morning toast
• E)lighting a match

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Definitions:

Immunity

The ability of an organism to resist a particular infection or toxin by the action of specific antibodies or sensitized white blood cells.

Antigens

Substances often found on the surface of pathogens (like bacteria and viruses) that trigger an immune response when detected by the body.

Vaccination

The act of introducing a vaccine into the body to produce immunity to a specific disease.

Latent Infection

An infection that is present but does not exhibit symptoms until activated under certain conditions.