A Confound Occurs When

question 43

Multiple Choice

A confound occurs when

• A) two or more independent variables exert their influence on a dependent variable at different times.
• B) an experimental investigation lacks external validity.
• C) two or more independent variables exert their influence on a dependent variable at the same time.
• D) the results of an experiment are not significant.
• E) one independent variable exerts an influence on a dependent variable.

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Definitions:

Centrioles

Cylinder-shaped organelles found in the cells of animals and most algae that help in the organization of spindle fibers during cell division.

Intracellular Digestion

A metabolic process where cells break down nutrients within their internal structures, such as lysosomes, to obtain energy and building blocks.

Lysosomes

Membrane-bound organelles in the cytoplasm of most cells containing enzymes that break down biological polymers.

Golgi Apparatus

A cell organelle that modifies, sorts, and packages proteins and lipids for transport or secretion.