Biology Unit 1 Review

What is science?

• A process of observing and asking questions about the natural world.

• A method of guessing outcomes without evidence.

• A way to prove hypotheses correct.

• A system of beliefs and opinions.

What is the responding variable in an experiment?

• The variable that is measured as a result of changing the independent variable.

• The variable that the experimenter changes.

• The variable that remains constant.

• The variable that is not used in the experiment.

What is a hypothesis?

• A proven fact.

• A predicted outcome based on initial observations, research, and prior knowledge.

• An educated guess without any evidence.

• A random guess.

What is the role of controlled variables in an experiment?

• To be changed frequently.

• To remain constant and not be changed.

• To be measured as a result of the experiment.

• To be the main focus of the experiment.

What is the main purpose of science?

• To develop testable explanations and gather data to support or reject them.

• To guess outcomes without evidence.

• To prove hypotheses correct.

• To create beliefs and opinions.

What is the outcome of an experiment based on?

• Random guesses.

• Initial observations, research, and prior knowledge.

• Opinions and beliefs.

• Unrelated data.

What is a theory in scientific terms?

• A guess based on limited information

• A highly reliable scientific explanation of events in the natural world

• An untested idea

• A random observation

Why is a control group necessary in a controlled experiment?

• To receive the independent variable

• To provide a comparison for the experimental group

• To ensure the experiment is not replicable

• To document procedures

What must be meticulously documented in an experimental design?

• Theories

• Procedures

• Hypotheses

• Observations

What are living things made up of?

• Atoms

• Molecules

• Cells

• Tissues