Unit 6 Study Guide – Cell Cycle
1. List 2 reasons why cells have size limitations. In other words, why do cells need to stay
small?
2. Do small or large cells have more efficient transport systems?
3. Define “cell cycle”.
4. What are the 3 stages of the cell cycle?
5. What are the 3 steps of interphase and what happens in each step?
6. What is divided in mitosis?
7. What is divided in cytokinesis?
8. Does the cell cycle take the same amount of time for every cell? Explain.
9. What is the difference between chromatin and chromosomes?
10.What form is the DNA in when the cell is in interphase?
11.At what part of the cell cycle does DNA condense?
12.What is the result of cytokinesis?
13.Give 2 reasons why cells might need to undergo mitosis.
14.There are four steps of mitosis, how can you remember the order of these stages?
15.What is step 1 of mitosis called? Describe what occurs in this step.
16.What is step 2 of mitosis called? Describe what occurs in this step.
17.What is step 3 of mitosis called? Describe what occurs in this step.
18.What is step 4 of mitosis called? Describe what occurs in this step.
19.What is the specific role of centrioles in cell division?
20.Identify the step of mitosis that this cell is in.
21.Identify the step of mitosis that this cell is in.
22.Identify the step of mitosis that this cell is in.
23.Identify the step of mitosis that this cell is in.
24.Identify the stage of the cell cycle that this cell is in.
25.Identify the stage of the cell cycle that this cell is in.
26.Identify the stage of the cell cycle that this cell is in.
27.A chromosome is made of condensed ___________________. Each “arm” of a
chromosome is called a _________________________. These “arms” are connected in the
center by the _____________________________. The _______________________ is the
cap at the ends of the chromatids that protect the DNA within a chromosome.
28.Label this chromosome. 
29.How does cytokinesis differ in plant and animal cells?
30.The red lights of the cell cycle are called __________________________.
31.The green lights of the cell cycle are called ___________________________.
32.Where are cyclins found in the cell cycle?
33.Where are checkpoints found in the cell cycle?
34.What would the S cyclin signal for?
35.What would the S checkpoint check for?
36.Why is there no checkpoint at the end of cytokinesis?
37.If a checkpoint catches damage in a cell or its DNA, what happens to it?
38.If checkpoints don’t catch a damaged cell and the cell makes it through the cycle, what
happens?
39.What can the over-division of cells lead to?
40.Do cancer cells require cyclins or respond to checkpoints?
41.What is a carcinogen? Provide 2 examples.
42.Can all cancers be avoided with the right lifestyle?
43.Can cancer genes be passed down through families?
44.What is the difference between “benign” and “malignant” tumors?
45.Define stem cell.
46.What is a pluripotent stem cell? A multipotent stem cell?
Determine whether each statement is true or false. CORRECT THE FALSE STATEMENTS.
47.A completely specialized (mature) cell can reproduce through mitosis.
48.Stem cells can reproduce to form new stem cells.
49.Only a portion of DNA is present in specialized cells.
50.A multipotent cell has the potential to become any cell type in the body.