Even When a Researcher Has Carefully Designed an Independent Variable

question 18

True/False

Even when a researcher has carefully designed an independent variable, there is no assurance that the experimental manipulation will achieve its purpose.

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Definitions:

Endocytosis

A cellular process in which substances are brought into the cell by engulfing them with the cell membrane.

Alveoli

Tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place.

Capillaries

Small blood vessels in the body's circulatory system that facilitate the exchange of water, oxygen, carbon dioxide, and many other nutrients and waste substances between blood and tissues.

Active Transport

The movement of molecules across a cell membrane from a region of lower concentration to one of higher concentration, using energy usually in the form of ATP.