Discovering Cells

How does magnification occur in an electron microscope?

• an electron beam creates an image

• an electron beam makes the object become larger

• light is changed into electrons by a convex lens

• light is reflected by an electron beam

Which of the following statement is NOT part of the cell theory?

• All cells are produced from other cells.
• Cells can absorb food and oxygen.
• All living things are composed of cells.
• Cells are the basic units of structure and function in living things.

Tags

NGSS.MS-LS1-1

The scientist that looked at pond water under a microscope to discover "animalcules" was

• Hooke
• Schleiden
• Leeuwenhoek
• Virchow

A cell's functions can include obtaining food and water and getting rid of

• cells.
• microscopes.
• waste.
• organisms.
• resolution.

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-7

If a compound microscope has a 10X lens in its eyepiece and a 20X lens in its nosepiece, its total magnification is _______ times the original size.

• 20
• 200
• 30
• 300

All cells come from other cells.

• true
• false

Tags

NGSS.MS-LS1-1

Cell theory is the basic unit of structure and function in living things.

• True
• false

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-3

Robert Hooke was the first person to see living cells through his microscope.

• true
• false

A compound microscope can magnify an object more than a single lens can.

• true
• false

Electron microscopes give lower magnification and poor resolution compared to light microscopes.

• true
• false