Name_________________________
Chapter 10 Test Review
1. The larger a cell becomes, the less efficiently it is able to function as its volume increases faster than its
surface area.
2. The period of cell growth and development prior (before) division (the longest phase) is called as
interphase.
3. Together, the G1 phase, S phase, and G2 phase are called interphase.
4. The process by which a cell divides into two daughter cells is called cell division.
5. Another name for cell division is the M phase.
6. When during the cell cycle are chromosomes visible? during cell division
7. Uncondensed DNA – chromatin
8. When chromosomes replicate, you get sister chromatids.
A cell that has 5 chromosomes in the G1 phase will have 10 chromatids in the G2 phase.
The number of sister chromatids in a human body cell that is entering cell division is 92
If a parent cell has 8 chromosomes, how many will each daughter cell have after mitosis 8
9. What are the four phases of the cell cycle? M phase, G1 phase, S phase, G2 phase
10. The two main stages of cell division are mitosis and cytokinesis.
11. What are the four phases of mitosis in their correct order? Prophase, Metaphase, Anaphase, Telophase
10-5
12. In Figure 10-5 The structure labeled X is centriole & structure
labeled Y is spindle
13. The structure labeled A in Figure 10-3 is called the cell plate
Figure 10-3
The process shown in Figure 10-3 occurs only in plant cells that
have just divided.
14. Look at Figure 10-3. The process shown occurs directly following
mitosis (division of nucleus). This process is called cytokinesis
15. During late telophase, cytokinesis begins.
16. During metaphase, each chromosome is connected to a(an) spindle fiber at its centromere and is lined up
in the middle of the cell.
17. The spindle helps to separate the chromosomes during mitosis.
18. What makes normal cells grown in a petri dish tend to stop growing once they have covered the bottom
of the dish? Contact with other cells
19. If a normal cell is touched on all sides by other cells and is injected with cyclin from a dividing cell, it
probably will start dividing.
20. Proteins called cyclins regulate the timing of the cell cycle in eukaryotic cells.
21. Proteins that regulate the cell cycle based on events inside the cell are called internal regulators.
22. In all forms of cancer, the cancerous cells fail to respond to the signals that regulate the cell cycle of
most cells.
23. What happens during each phase of interphase?
a. G1 – growth and Normal life processes occur
b. S – DNA replicates (The structure that holds 2 sister chromatids together is called centromere)
c. G2 – chromosomes condense, prepares for mitosis
24. Differentiation is the term used to describe the changes a cell undergoes as it develops and specializes.
25. Stem cells are cells that have not yet differentiated.
26. All other body cells except sex cells are called as somatic cells.
27. Diploid cells have 2 complete sets of chromosomes. Haploid cells have 1 set of chromosome.
28. What is a tumor? a mass of cells that have divided out of control
29. Which type of tumor can normally be removed successfully? benign
30. Surface area to volume ratio decreases as cells get larger.
31. Calculate the following (use formula from the notes)
Cell Size (cm)
Surface Area (cm2)
Volume (cm3)
SA : V ratio
1x1x1
6
1
6:1
2x2x2
24
8
3:1
34
8
17:4
32. Will the 2x2x2 cell and the 1x1x8 cell have the same volume? Yes
33. Which of the above cell had highest SA:V ratio? 1x1x1
34. Which cell had lowest SA:V ratio? 2x2x2
35. Which of the three will have the shortest diffusion times the same? (look at SA:V ratio) 1x1x1
Explain why? It has the highest SA:V ratio
36. Which of the three will have the longest diffusion times the same? (look at SA:V ratio) 2x2x2
Explain why? It has the least SA:V ratio
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Study all the diagrams from mitosis notes and be able to label the phases and structures.

Read over your notes, assignments, handouts, quiz etc.

Use the following website to practice Identifying different phases of mitosis in onion root tip cells.
http://www.biology.arizona.edu/cell_bio/activities/cell_cycle/01.html
1x1x8