4.1.1 Cell Theory

Match

Match each word to its definition.

• something that was never alive

• something that is alive or was once alive

• an instrument used to see very small objects

• a proposed explanation that can be tested through scientific investigation

• a scientific claim supported by a great deal of evidence

abiotic

biotic

microscope

hypothesis

theory

• abiotic

• biotic

• microscope

• hypothesis

• theory

Word Cloud

What makes something alive?

Multiple Select

What are necessary parts of a scientific theory?

Select all that apply.

• represented with mathematical equations

• repeated testing yielding the same results

• may be an opinion or guess

• supported by scientific facts and evidence

Draw

Match each example to the type of scientific statement it represents.

Multiple Select

Which of the following statements provides evidence that supports cell theory?

• Jennifer scraped the inside of her cheek and used a microscope to observe that the scraping contained cells.

• A fertilized egg cell divides rapidly to become a ball of many cells.

• The tissue in your heart is composed of thousands of cardiac cells.

• Cells swell and burst when placed in distilled water for several hours.

Match

Jermiyah examined four slides using her microscope. Two of the slides were biotic, and two were abiotic.

Match each part of Jermiyah's scientific argument to the type of statement it represents.

• All living things are composed of cells.

• The sugar and fiber slides did not contain cells. The dog and stem slides contained cells.

• Only the biotic slides, which contained samples of organisms that were once alive, contained cells. Cells are found in living things.

claim

evidence

reasoning

• claim

• evidence

• reasoning