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Name______________________________ Class __________________ Date ______________
Chapter 10 Cell Growth and Division
Reading Guide and Division
Section 101 Cell Growth, Division and Reproduction (pages 274-278)
Limits to Cell Size
1. What are two reasons why cells divide rather than continue to grow indefinitely?
2. In the visual analogy of the growing town, what does the library represent? Identify a characteristic that make it a good choice for this analogy.
3. Is the following sentence true or false? As a cells size increases, its amount of DNA also increases._______________
4. Is the following sentence true or false? As a cell grows in size, its volume increases
much more rapidly than its surface area. ________________
Cell Division and Reproduction
5. ญญญญญญญญญญญญญญญญญญญญญญ_________________________________________is the formation of new individuals.
6. For single-celled organisms, cell division is a form of ______________ reproduction.
7. Most multicellular organisms reproduce by ______________________ reproduction.
8. What are the advantages and disadvantages of both asexual and sexual reproduction.
Asexual and Sexual Reproduction
Section 102 The Process of Cell Division (pages 279-285)
9. Cells carry genetic information in packages of DNA called __________________ .
10. In eukaryotic cells, the genetic structure consists of DNA and a tightly wound protein, which together form a substance called ________________ .
11. _________ make possible the precise separation of DNA during cell division.
12. What happens during interphase?
13. Complete the cell cycle diagram by writing the correct name of each of the four phases: G1 phase, G2 phase, S phase and M phase
14. Interphase is divided into what three phases?
15. In eukaryotic cells, what happens in the G1 phase that differs from the G2 phase?
16. What happens during the S phase?
17. In eukaryotic cells, what are the two main stages of cell division?
A, key proteins associated with the chromosomes
18. What are the four phases of mitosis in order?
a. ______________________________c. ________________________________
19. During prophase, when cell chromosomes become visible, what are the duplicated strands of DNA called?
20. Circle the letter of the name for the two tiny structures located in the cytoplasm near
the nuclear envelope at the beginning of prophase.
a. centrioles c. centromeres
b. spindles d. chromatids
21. What is the spindle? T
Match the description of the event with the phase of mitosis it is in. Each
phase may be used more than once.
___________21. The chromosomes move until they form two groups a. Prophase
near the poles of the spindle.
___________22. The chromosomes become visible. b. Metaphase
___________23. A nuclear envelope re-forms around each cluster of c. Anaphase
___________24. The centrioles take up positions on opposite sides of d. Telophase
___________25. The chromosomes line up across the center of the cell.
___________26. The nucleolus becomes visible in each daughter
nucleus.of the text. Students should write the Glossary definition of each term.
27. Identify each of the four phases of mitosis pictured below.
28. What is cytokinesis?
29. How does cytokinesis occur in most animal cells?
30. Circle the letter of what forms midway between the divided nuclei during
cytokinesis in plant cells.
a. cell nucleus c. cell plate
b. cytoplasm d. cytoplasmic organelles / 1 or
Section 103 Regulating the Cell Cycle (pages 286-290)
Controls on Cell Division
31. What do cyclins regulate?
32. What is apoptosis? T
Cancer: Uncontrolled Cell Growth
33. What is cancer?
34. What are the two basic types of tumors? Explain how they are different.
35. What is the cause of cancer?
Section 104 Cell Differentiation (pages 292-297)
From One Cell to Many
36. Humans, pets, and petunias all pass through an early stage of development called a(n) ________________________________________.
37. Cells become ___________________ through the process of differentiation.
38. Scientists have mapped the outcome of every _________________ that leads to differentiation in the development of the microscopic worm C. elegans.
39. Most cells in the adult body are no longer capable of _______________________.
Stem Cells and Development
40. Which is an example of a totipotent cell?
A. blastocyst C. fertilized egg
B. bone cell D. lymphocyte
41. Cells that are pluripotent are unable to develop into the tissue that
A. forms the skin. C. produces blood cells.
B. lines the digestive tract. D. surrounds an embryo.
42. Adult stem cells are best described as
A. multipotent. C. totipotent.
B. pluripotent. D. unable to differentiate.
43. Complete the concept map by identifying some of the types of cells that embryonic stem cells give rise to.
Frontiers in Stem Cell Research
44. Which is not a new, potential benefit of stem cell research?
A. growing new skin cells to repair a cut
B. replacing heart cells damaged by heart attacks
C. repairing breaks between nerve cells in spinal injuries
D. preventing suffering and death caused by cellular damage
45. What is the main reason that embryonic stem cell research is considered ethically controversial?
A. harvesting embryonic stems cells can only help a few people
B. harvesting embryonic stem cells is an important political issue
C. harvesting embryonic stem cells causes the destruction of the embryo
D. harvesting embryonic stem cells can cause cellular damage
46. What is one new technology that could make stem cell research less controversial?
A. implanting skin cells instead of stem cells in damaged tissue
B. developing the ability to switch on the genes that make an adult cell pluripotent
C. replacing stem cells with cancer cells
D. using the Internet to get more people to accept stem cell research