According to the Cell Theory

question 34

Multiple Choice

According to the cell theory

• A) all organisms are composed of tissues.
• B) the smallest unit of life is a nucleus.
• C) animals but not plants are composed of cells.
• D) a multicellular organism is composed of many cells.
• E) new cells arise only from preexisting cells.

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Definitions:

Dependent Variable

In an experimental setting, the variable that is being tested and measured, which is expected to change as a result of manipulations in the independent variable.

Independent Variable

In experimental and research settings, the variable that is manipulated or changed to observe its effects on the dependent variable.

Exercise

Physical activity that is planned, structured, repetitive, and aimed at improving or maintaining physical fitness and overall health.

Independent Variable

The variable in an experiment that is manipulated or changed by the researcher to observe its effects on the dependent variable.