Cell Theory Answers

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1
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Name one advantage of electron microscopes.

Answer:

Electron microscopes make it possible to view objects at a greater level of detail than a light microscope (they can magnify up to about 300,000 times).

3

✔ Robert HookeAnton van LeeuwenhoekMatthias SchleidenTheodor SchwannRudolph Virchow looked at cork through a compound microscope

A
✔ Robert Hooke
B
Anton van Leeuwenhoek
C
Matthias Schleiden
D
Theodor Schwann
E
Rudolph Virchow
5

Robert Hooke✔ Anton van LeeuwenhoekMatthias SchleidenTheodor SchwannRudolph Virchow called living cells “animalcules”

A
Robert Hooke
B
✔ Anton van Leeuwenhoek
C
Matthias Schleiden
D
Theodor Schwann
E
Rudolph Virchow
6

What information did you include in your response?

A
Electron microscopes make it possible to view objects at a greater level of detail than a light microscope.
B
Electron microscopes can magnify an object up to 300,000 times.
7

Name one advantage of light microscopesover electron microscopes.

Answer:

Living cells can be observed using a light microscope; this is not possible with an electron microscope.

8

What information did you include in your response?

A
Living cells can be observed using a light microscope; this is not possible with an electron microscope.
B
Unlike electron microscopes, light microscopes allow scientists to observe changing movements in living cells.
9

Use the drop-down menus to identify the scientists who match the descriptions below.Robert HookeAnton van LeeuwenhoekMatthias Schleiden✔ Theodor SchwannRudolph Virchow found that animals are composed of cells

Answers:
found that animals are composed of cells:Theodor Schwann
found that plants are composed of cells:Matthias Schleiden
looked at cork through a compound microscope:Robert Hooke
declared that all living cells can only come from other living cells:Rudolph Virchow
called living cells “animalcules”:Anton van Leeuwenhoek
10

Question text not available

Answers:
found that animals are composed of cells:Theodor Schwann
found that plants are composed of cells:Matthias Schleiden
looked at cork through a compound microscope:Robert Hooke
declared that all living cells can only come from other living cells:Rudolph Virchow
called living cells “animalcules”:Anton van Leeuwenhoek
11

List the three components of traditional cell theory.

Answer:

All organisms are made of cells. Cells are the basic unit of structure and function for all living things. All cells come from preexisting cells.

12

Which components did you include in your response?

A
Cells are the basic unit of structure and function for all living things.
B
All organisms are made of cells.
C
All cells come from preexisting cells.
13

According to cell theory, which of the following are made of cells? Check all that apply.

A
flowers
B
rocks
C
blood
D
water
E
bacteria
F
sugar
G
skin
14

Name one disadvantage of light microscopes.

Answer:

Light microscopes can only magnify up to about 2000 times the original size.

15

What information did you include in your response?

A
Light microscopes can only magnify up to 2000 times the original size.
B
It is difficult to enhance the contrast between cells and their surroundings to see cell structure and movement with a light microscope.

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