Cell Theory and Discovery

Years ago, scientists did not know cells existed.

• True

• False

We now know that cells are the _______ of living things.

• basic unit

• center of life

• building block

• smallest structure

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

Match each scientist with their discovery.

• made his own microscope with 300x magnification and was the first to describe bacteria.

• Matthias Schleiden

• determined that all organisms are composed of cells. He also discovered Schwann cells.

• Anton van Leeuwenhoek

• first to propose that all plants were made up of cells

• Theodor Schwann

• determined that all cells come from pre-existing cells.

• Rudolf Virchow

• discovered the cell by looking at cork through a microscope. He was the first person to use the word cell.

• Robert Hooke

Tags

NGSS.MS-LS1-1

Who was the first to observe cells in 1665?

• Isaac Newton

• Robert Hooke

• Albert Einstein

• Galileo Galilei

What did Robert Hooke observe using a primitive compound microscope?

• A slice of apple

• A slice of cork

• A slice of bread

• A slice of leaf

Tags

NGSS.MS-LS1-1

Who was the first to observe cells in 1665?

• Isaac Newton

• Robert Hooke

• Charles Darwin

• Albert Einstein

What did Robert Hooke see in the cork?

• Living cells

• Cell walls of dead tissue

• Bacteria

• Viruses

Robert Hooke came up with the term 'cell'

• Because the specimen's structure looked like small rooms or compartments.

• Because he wanted to introduce a new scientific term.

• Because his discovery disproved previous cell theories.

• Because it was a popular term at the time.

Which of the following did Robert Hooke observe with a primitive microscope?

• an onion slice

• a thin slice of cork

• bacteria

• unicellular organisms

Tags

NGSS.MS-LS1-1

Anton van Leeuwenhoek is considered the "Father of ________".

• Microbiology

• Astronomy

• Botany

• Physics

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2