Download Ch. 10 Cell Growth and Division Packet-2009

Ch. 10 Packet
Cell Growth and Division
Name ___________________
Period ________
California State Standards covered in this Chapter:
th
th
A review of 7 grade standards to assist in the understanding of next 9 grade standards to be covered.
Cell Biology
1. All living organisms are composed of cells, from just one to many trillions, whose details usually are
visible only through a microscope. As a basis for understanding this concept:
b. Students know the characteristics that distinguish plant cells from animal cells, including
chloroplasts and cell walls.
c. Students know the nucleus is the repository for genetic information in plant and animal cells.
e. Students know cells divide to increase their numbers through a process of mitosis, which results in
two daughter cells with identical sets of chromosomes.
Genetics
2. A typical cell of any organism contains genetic instructions that specify its traits. Those traits may be
modified by environmental influences. As a basis for understanding this concept:
a. Students know the differences between the life cycles and reproduction methods of sexual and
asexual organisms.
e. Students know DNA (deoxyribonucleic acid) is the genetic material of living organisms and is
located in the chromosomes of each cell.
________________________________________________________________________________
Read the appropriate section in the textbook before answering the following questions. You
must put all answers and definitions in your own words for full credit.
Section 10-2 Cell Division
1.
What is cell division?
2. When most prokaryotes divide, they replicate their DNA and divide in half, producing two
identical daughter cells. This type of reproduction is called
___________________________ . Because this type of reproduction does not involve the
exchange of genetic material between two parents, it is considered
_______________________ reproduction. (see pg. 475)
3. Cell division occurs in two stages. Describe them:
a) Mitosis:
b) Cytokinesis:
4. What is a chromosome:
5. Draw and label the structures of a chromosome that has already gone through replication
(been copied).
6. What is a chromatid?
7. Why is it important that the sister chromatids of a chromosome are identical?
8. What takes place during the cell cycle?
9. Interphase is the longest stage of the cell cycle. It is a period of intense growth and activity.
It can be broken down into 3 subphases. Describe what occurs during each subphase.
Interphase
Subphase
Description of Events
G1 phase
S phase
G2 phase
10. List the stages of Mitosis in the order in which they occur.
a)
b)
c)
d)
11. Draw a cell representing each stage of Mitosis. Label the important structures on the
diagrams and then describe the key events that occur during each stage of Mitosis.
Stage
Prophase
Continued on next page
Description of Events
11. Continued.
Stage
Metaphase
Description of Events
Anaphase
Teleophase
12. What is Cytokinesis?
13. When does cytokinesis occur?
14. How is cytokinesis in plant cells different from cytokinesis in animal cells?
Section 10-3 Regulating the Cell Cycle
15. How do cells respond to contact with other cells?
16. What are cyclins?
17. What are internal regulators?
18. What are 2 specific functions of internal regulatory proteins?
a)
b)
19. What are external regulators?
20. What are 2 specific types of external regulators and what are their functions?
a)
b)
21. What happens when cells do not respond to the signals that normally regulate their growth?
22. What is cancer?
23. List 3 causes of cancer.
a)
b)
c)
24. What do all types of cancer have in common?
25. Describe 2 things you can do to protect yourself from developing cancer.
a)
b)