Download Reading Questions for Cell Division and Mitosis

Holt Reading Questions for Mitosis & Cell Division
Name ________________________________________ Period _____ Score _________
Page 223
1. Roughly how many new cells do people produce everyday?
2. As a person grows their cells do not grow and get bigger. So how does a person get
bigger?
3. Old people like Mr. Haskell that aren’t growing any more still need to make new cells.
Why?
4. What limits the size of cells?
5. The work of cell is done by ___________________________________.
6. Because larger cells are more difficult to __________________________, cells divide
when they grow to a certain size.
Page 224 – 225
7. Cell activities are directed by ____________________________________________.
8. What are genes?
9. What are chromosomes?
10. Explain the difference between prokaryotic chromosomes and eukaryotic chromosomes.
11. The DNA and proteins connected to the DNA make up a substance called ____________.
12. What are the proteins called that are mixed up with the chromosomes?
13. What is a chromatid?
14. What is a centromere?
Pages 226 – 227
15. All newly-formed cells require _________________, so before a cell divides, a copy of
_________________ is made for each daughter cell.
16. The two new cell formed after cell division are called __________________ cells.
17. Cell division in eukaryotic cells is more complex because besides making copies of the
DNA, they also must make copies of what?
18. Green anole lizard can grow a new tail when needed. The process by which an organism
replaces or restores a lost or amputated body part is called ______________________.
Pages 228 – 229
19. What are the 5 stages of the cell cycle?
1.
2.
3.
4.
5.
20. The 1st three stages of the cell cycle is know as __________________________.
21. What’s the main thing going on in the G1 phase?
22. What is copied during the S phase?
23. What is mitosis?
24. During ______________________, the two daughter cells are physically separated.
Pages 230 – 231
25. What are the 4 stages of mitosis? Name one thing that happens in each stage.
Stage
What happens
1. _____________________
________________________________________
2. _____________________
________________________________________
3. _____________________
________________________________________
4. _____________________
________________________________________
Pages 232 - 233
26. Explain difference between cytokinesis in plants and cytokinesis in animal cells.
27. When does cytokinesis begin?
Pages 234 – 235
28. Why does it matter that we understanding how the body regulates cell growth?
29. The cell has 3 check points. What is the cell checking for at check point g1?
30. What is the cell checking for at check point G2?
31. What is cancer?
32. Explain the difference between a benign tumor and a malignant tumor?
33. Explain what chemotherapy is?
34. What kind of things might cause cancer?
35. What is the best way to prevent cancer?