Mitosis Answers

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What would happen to skin cells if mitosis did not take place?

A
Skin cells would regrow from other types of cells.
B
Skin cells would be replaced at a slower rate.
C
Skin cells would be replaced with new cells.
D
Skin cells would die and not be replaced.
3

An example of mitosis at work is a leaf

A
turning yellow.
B
growing.
C
taking in carbon dioxide.
D
performing photosynthesis.
5

Scientists use tissue cultures to study possible medicines that can be used to treat cancer patients. What is one benefit of this procedure?

A
Patients do not receive harmful or ineffective medication.
B
The cultured cells are not in their normal environment.
C
Doctors know how to treat all types of cancer.
D
One tissue culture can be used for all cancer patients.
6

Which is the end result of cytokinesis from a cell undergoing mitosis?

A
one cell that has two identical copies of DNA
B
one cell that has two different copies of DNA
C
two cells that have two identical copies of DNA
D
two cells that have two different copies of DNA
8

An example of mitosis at work is a plant root

A
elongating.
B
absorbing.
C
pointing down.
D
breaking.
10

Which are replicated during interphase?

A
sister chromatids
B
chromosomes
C
centromeres
D
nuclei
11

The role of the cell membrane is most like the job of which person?

A
a firefighter who evacuates people from a burning building
B
a police officer who allows select people to enter and leave a crime scene
C
a bus driver who drives the express route from the suburb to downtown
D
a teacher who keeps students in the classroom during an exam
12

The endosymbiotic theory provides an explanation for the origin of chloroplasts. Which trait of chloroplasts supports this explanation?

A
Chloroplasts do not reproduce.
B
Chloroplasts rely on proteins that are made by the cell.
C
Chloroplasts are larger than prokaryotic cells.
D
Chloroplasts have their own DNA.
13

Which order shows the levels of organization from largest to smallest?

A
organism, organ system, cell, organ, tissue
B
organism, tissue, organ system, organ, cell
C
organism, organ, organ system, cell, tissue
D
organism, organ system, organ, tissue, cell
14

Which are replicated during interphase?

A
sister chromatids
B
chromosomes
C
centromeres
D
nuclei
15

Which structures do plant cells have for making food that animal cells do not?

A
mitochondria
B
ribosomes
C
cytoplasm
D
chloroplasts
16

Scientists use tissue cultures to study possible medicines that can be used to treat cancer patients. What is one benefit of this procedure?

A
Patients do not receive harmful or ineffective medication.
B
The cultured cells are not in their normal environment.
C
Doctors know how to treat all types of cancer.
D
One tissue culture can be used for all cancer patients.
17

A scientist is using a microscope to observe a type of bacteria.Which two structures would the scientist most likely see?

A
nucleus and DNA
B
DNA and cell wall
C
cell wall and nucleus
D
nucleus and chloroplast
18

What would happen to skin cells if mitosis did not take place?

A
Skin cells would regrow from other types of cells.
B
Skin cells would be replaced at a slower rate.
C
Skin cells would be replaced with new cells.
D
Skin cells would die and not be replaced.
19

The data in the table were recorded during an investigation in which a paramecium was placed in a hypertonic salt solution. If this data is shown in a bar graph, which description accurately represents the bars?

Question illustration
A
The graph has five bars of equal height.
B
The bars range from tallest for very high concentration to shortest for very low concentration.
C
The bar for very low concentration is twice the height of the bar for medium concentration.
D
The bar for very high concentration is five times the height of the bar for very low concentration.
20

Which best describes the importance of mitosis to living organisms?

A
genetic variation and growth
B
growth and development
C
development and sexual reproduction
D
sexual reproduction and genetic variation

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