Cell Theory

Who discovered and named cells? 

• Captain Hook
• Robert Hooke
• Zacharias Janssen
• Rudolf Virchow

What did Leeuwenhoek examine?

• Cork
• Pond water
• Plant cells
• Animal fat

Which of the following statements is not part of the cell theory?

• Cells are the basic unit of structure and function in all living things.
• All cells are produced from other cells.
• Only animal cells are composed of cells.
• All living things are composed of cells.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

What did Leeuwenhoek called the bacteria when he first saw them in the simple microscope he made?

• Planticules
• Fungicules
• Animacules
• Mamacules

The__________ sharpens the image under high magnification.

• revolving nosepiece
• fine adjustment knob
• coarse adjustment knob

Supports the microscope

• arm
• diaphragm
• base
• light source

Name this part of the microscope

• arm
• scanning objective
• diaphragm
• eyepiece/ ocular

Number 6

• Insulator
• Objective Lens
• Ocular Lens
• Light

Select the best answer to the question: Explain why a scientist might choose to use an electron microscope rather than a light microscope.

• The light microscope won't show as much and it doesn't make the picture as bigger as the electron microscope.

• Electron microscope is better for a scientist to choose than a light microscope it uses electrons and not light.

• An electron microscope gives a greater magnification and better resolution than a light microscope.

• Scientists might need to choose the electron microscope because it is cheaper and easier than the light microscope.

Supports and holds the slide

• eyepiece/ ocular
• arm
• base
• stage