Cell Theory Answers

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1
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Which part of the cell theory is best explained by studying the ability of stem cells to divide and form additional cells?

A
All cells come from preexisting cells.
B
Cells are the basic units of structure and function of all living things.
C
All organisms are composed of cells.
D
All cells are similar in composition and metabolic activities.
2
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In the 1600s, which scientist discovered microbes in pond water by using a microscope?

A
Theodor Schwann
B
Robert Hooke
C
Anton van Leeuwenhoek
D
Matthias Schleiden
3

Which is a part of the cell theory?

A
cells come from pre-existing cells
B
cells have a nucleus
C
organisms with one cell must be seen with a microscope
D
organisms must have more than one cell to live
4

Which microscope did Anton van Leeuwenhoek use to observe single-celled organisms?

A
simple microscope
B
compound light microscope
C
electron microscope
D
tunneling microscope
5

The study of which structure was instrumental in the formulation of the modern cell theory?

A
plant cell
B
animal cell
C
cell membrane
D
DNA molecule
6

Which type of microscope was the first to be used for studying single-celled organisms?

A
simple microscope
B
tunneling microscope
C
compound light microscope
D
electron microscope
7

Which reason best explains why dead specimens must be used with transmission electron microscopes?

A
Electrons pass over the specimen.
B
The lights that are used are harmful to the specimens.
C
Specimens are placed in a vacuum.
D
The image that is produced is two dimensional.
8

Which was Venter’s contribution to science?

A
discovered the existence of single-celled organisms
B
invented the light microscope
C
discovered the structure of DNA
D
invented a synthetic cell
9

Which microscope uses a series of lenses to magnify an object in steps?

A
electron microscope
B
simple microscope
C
compound light microscope
D
scanning microscope
10

Which microscope is often used to view metal surfaces?

A
scanning electron microscope
B
scanning tunneling microscope
C
transmission electron microscope
D
compound light microscope

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