The Angles of Incidence and Reflection

question 78

Multiple Choice

The angles of incidence and reflection

• A) are not related.
• B) can never be equal.
• C) are measured from a normal to the reflecting surface.
• D) add to 90°.

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Definitions:

Memory Cells

A type of immune cell that remains in the body for long periods, ready to quickly respond to previously encountered antigens.

Antibodies

Proteins produced by the immune system that recognize and neutralize foreign objects like bacteria and viruses.

T Cells

A type of white blood cell that plays a central role in the immune response by attacking infected or cancerous cells.

Antigen-presenting Cells

Specialized cells that process and present antigens to T-cells, initiating an immune response.