An Experiment Is Designed to Study the Effects of Long

question 26

Multiple Choice

An experiment is designed to study the effects of long lectures on the sleeping behavior of college students. In such a study, the dependent variable is

• A) sleeping behavior of college students.
• B) long lectures.
• C) the length of time a lecture runs.
• D) college students.

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Definitions:

Macrophages

Immune cells that engulf and digest cellular debris, foreign substances, microbes, and cancer cells.

Phagocytosis

Phagocytosis is a cell's process of engulfing and digesting solid particles, such as bacteria, as a defense mechanism or for nutrient acquisition.

Protein Fibers

Long, filamentous proteins such as collagen or keratin that provide structural support and strength to cells and tissues.

Connective Tissue

Tissue that supports, connects, or separates different types of tissues and organs in the body, characterized by few cells and various fibers embedded in a large amount of extracellular matrix.