Cell Theory Answers

0 verified answers1 views
1
Free Preview

According to the cell theory, which structure contains cells?

A
blood
B
water
C
carbon dioxide
D
chromosome
2
Free Preview

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.
3

Which microscope did Robert Hooke use to study tree bark?

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

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
6

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
7

Which experiments led to changes to the original cell theory?

A
experiments that showed that blood cells transport gases, waste, and nutrients throughout the body
B
experiments that showed that all cells are similar in how they metabolize and in their composition
C
experiments that transplanted synthetic chromosomes into bacterial cells to create a new species
D
experiments that established the existence of single-celled organisms and microbes
8

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.
9

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
10

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.
11

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
12

Which was the first “cell” viewed by the light microscope?

A
microbe
B
atom
C
DNA
D
oak bark
13

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.
14

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.
15

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
16

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
17

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

Did you find these answers helpful?