Cell Theory

Open Ended

Why is it important for scientific theories to be supported by evidence and repeated testing?

Multiple Select

Which of the following organisms are unicellular?

• Amoeba

• Butterfly

• Yeast

• Leaf

Open Ended

How can you tell if something is living or nonliving? Give at least two characteristics that help you decide.

Multiple Choice

Which of the following is NOT a characteristic of living things?

• Ability to respire

• Grow

• Reproduce

• Cannot metabolize

Multiple Select

According to cell theory, which statements are true?

• All living things are made of one or more cells.

• Cells can arise spontaneously from nonliving matter.

• The structure and function of a living thing is determined by its cells.

• All cells come only from existing cells.

Open Ended

Explain why antibiotics are not effective against viruses, using evidence from the lesson.

Multiple Choice

A theory is a well-supported explanation for observed phenomena that is based on which of the following?

• Evidence, logical reasoning, and repeated testing

• Personal beliefs and opinions

• Random guesses and assumptions

• Unproven ideas and myths