Chapter 1 Review

Front

What is the process of maintaining stable internal conditions in the body called?

Back

Homeostasis

Front

In a controlled experiment, how many variables should be tested at a time?

Back

Only one variable is tested at a time.

Front

What is the term for the process where two cells from different parents unite to form a new organism?

Back

Sexual reproduction

Front

What must a hypothesis be in order to be useful in science?

Back

A hypothesis must be testable.

Front

What is a scientific theory?

Back

A well tested explanation that unifies a broad range of observations.

Front

What is metabolism?

Back

The set of life-sustaining chemical reactions in organisms.

Front

What is the difference between a hypothesis and a scientific theory?

Back

A hypothesis is a proposed explanation, while a theory is a well-tested explanation.

Front

What is the role of a control group in an experiment?

Back

The control group is used as a benchmark to measure how the other tested subjects do.

Front

What is the definition of a variable in an experiment?

Back

A variable is any factor, trait, or condition that can exist in differing amounts or types.

Front

What is the purpose of conducting experiments in science?

Back

To test hypotheses and gather data.