Quiz: Mitosis
Name______________________
1-5 Give the names of the stages of mitosis in the drawings to the left.
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1
2
3
4
For questions 5 - 14, give the name of the stage in which the event occurs.
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The cells begin to pinch in to divide the cytoplasm.
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The pairs of sister chromatids are lined up at the center of the cell.
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The chromosomes condense, thicken and become distinct from one another. The
chromosomes are now visible.
The chromatids are pulled to opposite sides of the cell by the microtubules.
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The nucleolus disappears during this phase.
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The nuclear membrane returns.
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The centrioles begin to move to opposite poles, organizing the microtubules as
they go.
The nucleolus returns and is visible.
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The nuclear membrane begins to break apart so that the microtubules can reach
the pairs of sister chromatids.
During what stage does cytokinesis occur?
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All of the information that a cell needs to function is stored in the ______ of the
cell.
_____ is the process by which cellular material is divided between two new
daughter cells.
Name given to the two new cells formed at the end of cell division.
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What must happen to all chromosomes prior to cell division?
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The name for each duplicate half of a chromosome.
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The division of the nucleus is called ____.
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The division of the cytoplasm is called ___.
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The result of mitosis in multicellular organisms.
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The result of mitosis in unicellular organisms.
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Sister chromatids are connected at an area called the _____.
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The _____ is the life of the cell from the time it is first formed from a dividing
parent cell until its own division into two cells.
The three stages of the cell cycle that lead up to cell division are?
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____________________27
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The cell increases its size, and manufactures extra enzymes and organelles during
what phase of the cell cycle?
A network or framework of fibers to which the chromosomes are attached. They
push and pull the chromosomes around the cell.
What cellular component makes up this framework?
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What cellular organelle organizes the construction of this framework?
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G1, S, and G2 are collectively known as what phase of the cell cycle?
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The cell assembles the special structures needed for cell division during what
phase of the cell cycle?
What happens during the “S” phase?
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This part of the cell organizes the formation of the spindle.
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35 What is the purpose of mitosis?
36 There are two main reasons why cells divide rather than continuing to grow larger and larger. What are
these two reasons?
37 What happens when the controls that keep mitosis in check fail?
Answers:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
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31.
32.
33.
34.
35.
telophase
anaphase
prophase
metaphase
telophase
metaphase
prophase
anaphase
prophase
telophase
prophase
telophase
prophase
telophase
chromosomes
cell division
daughter cells
The chromosomes replicate.
chromatid
mitosis
cytokinesis
growth and repair
asexual reproduction
centromere
cell cycle
G1, S, G2
G1
spindle
microtubules
centrioles
interphase
G2
replication of DNA
centrioles
The purpose of mitosis is to produce two daughter cells that are exact duplicates of the mother cell. It is
necessary that the cells be identical so that they can carry out the same function as the mother cell.
36. a) The larger a cell becomes, the more demands the cells places on its DNA.
b) If the cell grows too large, it will have trouble moving enough nutrients and wastes across the cell
membrane.
37. If the system of “checks and balances” fails to control the cell cycle, the cell may start dividing
uncontrollably. Cancer cells do not respond to the signals that regulate the growth of cells. Cancer cells
divide uncontrollably and form masses of cells called tumors.