Although Your Sister Is Not a Scientist, She Says That

question 24

Multiple Choice

Although your sister is not a scientist, she says that she uses scientific techniques in her everyday life. You do not believe her but she insists it is true. Which of the following examples could she use to best persuade you?

• A) When she cooks, she measures ingredients and puts them together to form something else .
• B) When she drives in her car, she hypothesizes about things .
• C) She put some tomatoes in the sun and some in the shade to see if the sun causes them to ripen faster.
• D) She buys a brand of toothpaste based on statistical data (four out of five dentists recommend it).
• E) All of these are examples of using scientific techniques in her everyday life.

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Definitions:

Clonal Selection

A theory in immunology that explains how antigens selectively bind to specific receptors on immune cells, leading to the activation and proliferation of these cells.

Inflammatory Chemicals

Substances produced by the body in response to injury or infection, causing redness, heat, swelling, and pain as part of the immune response.

Lymphatic Vessels

Part of the lymphatic system, these vessels transport lymph, a fluid containing white blood cells and waste products, back into the bloodstream.

Valves

Structures that open and close to control the flow of fluids in one direction, commonly found in the heart and veins of the circulatory system.