Organisms Called _______ Live on or in the Body of a Host

question 92

Multiple Choice

Organisms called _______ live on or in the body of a host and cause some degree of harm.

• A) halophiles
• B) mesophiles
• C) aerobes
• D) commensals
• E) pathogens

---

Definitions:

Antibodies

Proteins produced by the immune system that recognize, bind to, and help neutralize foreign substances like bacteria and viruses.

Allergic Reaction

A hypersensitive response of the immune system to substances that are usually harmless to most people, such as pollen, food, or dust.

Antibody Class

Categories of antibodies distinguished by variations in their heavy chain constant regions, affecting their functional location and immune response actions.

IgE

Immunoglobulin E, a class of antibodies that play a crucial role in allergic reactions by recognizing allergens and triggering immune responses.