Download Biology CH 6 Test Review

Cell Cycle and Mitosis Review
1. What is the picture that indicates the number and structure of the chromosomes
in a somatic cell?
2. Human males have what sex chromosomes? Human females?
3. How many autosomes and sex chromosomes do human gametes have?
4. What are the two steps involved in binary fission of bacteria?
5. How many homologues of each chromosome does a diploid cell have?
6. Answer the following questions regarding the cells produced in mitosis.
a. How many cells are made?
b. How do the new cells compare to the parent cell?
c. If the parent cell is diploid, what will the new cells be?
7. What stage of the cell cycle occupies the most time of a cell’s life?
8. How many chromosomes do people with Down syndrome have?
9. A human egg cell has how many chromosomes?
10. What is trisomy?
11. Nuclear division is called?
12. Cell division is called?
13. What is the importance of checkpoints?
14. What occurs during the synthesis (S) phase?
15. Time spent in G1, S, and G2 Is called?
16. Draw the stages of the cell cycle in order including the four phases of mitosis and
what happens in each phase?
(G1, S and G2 can be drawn as 1 cell )
17. Draw a duplicated chromosome and label all of the parts
18. How do homologous chromosomes resemble each other? How do they differ?
19. If an organism has a haploid number of 8, how many chromosomes are in normal
body cells?
20. What is a fertilized egg cell?
21. What is a segment of a DNA molecule containing instructions for traits?
22. What is the purpose of a karyotype?
23. If haploid sperm and egg join, the _________________ number of chromosomes
is restored.
24. Chromosomes consist of two ___________________ attached together by a
centromere.
25. If gametes did not have half the number of chromosomes of normal cells, what
would happen when two gametes (sperm and egg) joined in fertilization?