Cell Theory Answers

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1
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What do scanning electron microscopes and transmission electron microscopes have in common?

A
Both generate three-dimensional images.
B
Both offer magnification to the atomic level.
C
Both are used to view the parts of a cell.
D
Both require a vacuum.
2
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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
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

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
5

According to the cell theory, which describes cells?

A
All organisms are composed of multiple cells.
B
All cells have the same structure and function.
C
Cells are found in everything on Earth.
D
All living cells come from other living cells.
6

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.
7

According to the cell theory, which structure contains cells?

A
blood
B
water
C
carbon dioxide
D
chromosome
8

Which statement best explains why cells were observed in more detail using a compound microscope than a simple microscope?

A
A compound microscope has greater magnification ability than a simple microscope.
B
The compound microscope was invented before the simple microscope.
C
A compound microscope is much easier to manufacture than a simple microscope.
D
Compound microscopes were more common than simple microscopes.
9

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.
10

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

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