Questions: Which of these describes humoral immunity? - T-cells and macrophages fighting infected cells that are non-self or cancerous - obtaining immunity from an outside source, like mother to baby - B-cells binding to antigens to create a response of plasma cells and memory b-cells

Which of these describes humoral immunity?
- T-cells and macrophages fighting infected cells that are non-self or cancerous
- obtaining immunity from an outside source, like mother to baby
- B-cells binding to antigens to create a response of plasma cells and memory b-cells

Transcript text: m - Body Systems Which of these describes humoral immunity? T-cells and macrophages fighting infected cells that are non-self or cancerous obtaining immunity from an outside source, like mother to baby B-cells binding to antigens to create a response of plasma cells and memory b-cells

Solution

The answer is the third one: B-cells binding to antigens to create a response of plasma cells and memory B-cells.

Explanation:

"T-cells and macrophages fighting infected cells that are non-self or cancerous" describes cell-mediated immunity, not humoral immunity. Cell-mediated immunity involves T-cells directly attacking infected or cancerous cells.
"Obtaining immunity from an outside source, like mother to baby" describes passive immunity, not humoral immunity. Passive immunity is when antibodies are transferred from one individual to another, such as from mother to baby through breast milk.
"B-cells binding to antigens to create a response of plasma cells and memory B-cells" correctly describes humoral immunity. In humoral immunity, B-cells recognize and bind to specific antigens, leading to the production of plasma cells that secrete antibodies and memory B-cells that provide long-term immunity.

Summary: Humoral immunity involves B-cells binding to antigens and producing plasma cells and memory B-cells.

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