Which Group of Organisms Currently Is in the Most Jeopardy

question 15

Multiple Choice

Which group of organisms currently is in the most jeopardy, based on the percentage of members that are endangered?

• A)mammals
• B)amphibians
• C)reptiles
• D)plants
• E)fish

---

Definitions:

Immunoglobulin

A class of proteins comprising antibodies that play a central role in the immune response by identifying and neutralizing pathogens.

Antigen

Substance that induces a state of sensitivity or resistance to infection or toxic substances after a latent period; substance that stimulates the specific immune system; also called epitope.

Plasma Cells

Specialized white blood cells that produce antibodies in response to infections.

Cytotoxic T cells

A type of immune cell capable of killing cancer cells, infected cells, and other cells that are deemed a threat to the organism.