Any Substance That Produces an Inappropriate Response of the Immune

question 45

Multiple Choice

Any substance that produces an inappropriate response of the immune system is referred to as a(an)

• A) allergen.
• B) antibody.
• C) plasma cell.
• D) allergy.
• E) perforin.

---

Definitions:

Cambrian

A geological period approximately 541 million years ago, marked by a rapid diversification of life in the Earth's oceans.

Proterozoic

An eon in the geologic timescale, following the Archean and preceding the Phanerozoic, characterized by the first evidence of oxygen in the atmosphere and multicellular life.

Incomplete Metamorphosis

A type of development in some insects, where the young resemble adults but are typically smaller and lack fully developed wings and reproductive structures.

Nymph

An immature form of some invertebrates, particularly insects, which undergoes gradual metamorphosis before reaching its adult stage.