Download Mitosis review WS KEY

Name
Ms. Kellock
Science – period
Date
Mitosis Review Worksheet
1.) What cell structure coordinates how the chromatids move during mitosis? Spindle
2.) What organelle anchors the spindle in animal cells? centrioles
3.) List the four phases of mitosis
Prophase, metaphase, anaphase, telophase
4.) Write a Mnemonic for the 6 parts of the cell cycle
Shared some in class
5.) During mitosis and cytokinesis
2
daughter cells are created.
These cells are identical to their parent cell
6.) During what phase does cytokinesis start? telophase
7.) If a human cell has 46 chromosomes, how many chromosomes will be in each daughter cell?
46
8.) If a dog cell has 72 chromosomes, how many daughter cells will be created in a single cell cycle? 2
Each of the daughter cells will have how many chromosomes?
72
9.) The nuclear membrane dissolves during what phase? prophase
10.) What structure holds the individual chromatids together? centromere
11.) How many chromosomes are present in the cell pictured? 6
Extension: If there are 6 chromosomes then there are 12 chromatids
12.) During which stage of the cell cycle do the chromosomes replicate (get copied)?
Interphase (S part)
13.) What are each of these copies called? Sister chromatids
14.) Why is it important for DNA to replicate?
So each new nucleus can get a complete set of chromosomes
15.) During which phase of mitosis do the replicated (copied) chromosomes thicken and become visible?
Prophase
Cell Cycle (4.3)
5/15
16.) During which phase of mitosis do the replicated chromosomes line up on the equator or middle of the cell?
Metaphase
17.) List two features of cell division are different for animal and plant cells.
1. Plant cells do not have centrioles to form their spindle but animal cells do
2. During Cytokinesis, Plant cells form a cell plate that becomes the new cell walls while animal
cells just pinch in their cell membrane
18.) Using colored pencils or markers, diagram how a nucleus with 2 chromosomes would go through cell
cycle/mitosis
Interphase  Prophase
Telophase 
Cytokinesis
19.) List at least 3 factors that can affect the cell cycle
Environmental; life choices; pollution; genetics; age of cell and of organism; type of cell and
organism
20.) What is cancer?
A disease caused by an uncontrolled division of abnormal cells in a part of the body.
21.) Describe how the cell cycle is involved with cancer
Cancerous cells do not go through cell cycle at a regular pace. Rather they speed through
Interphase only to copy chromosomes – they do not grow, develop or function. They then go
through mitosis again repeatedly.
Cell Cycle (4.3)
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