BIOLOGY
CYTOLOGY
Topic 13: Mitosis
11. Write the correct names of phases of mitosis.
1._____________ is a period from the beginning of one
division to the beginning of the next division
2. DNA replication occurs in ___________.
A) G1 phase
B) S phase
C) G2 phase
D) prophase
E) telophase
3. Chromatids are formed _____.
A) during G1
B) during G2
C) during the S phase
D) at the start of mitosis
E) at the cytokinesis
4. The main functions of mitosis are _________ ,
__________ and _________________
5. Explain the following phases of Cell cycle.
G1:
S:
G2:
Mitosis:
6. How many chromosomes are present in a
somatic human cell in G1?
A) 23
B) 46
C) 92
D) 184
E) none of the above
7. Sister chromatids separate during ___________.
A) anaphase
B) G1 phase
B) G2 phase
D) metaphase
E) prophase
12. Sister chromosomes are separated from each other
through the each pole in __________ phase.
8. In animal cell mitosis, the cleavage furrow forms
during ___________.
A) anaphase
B) G1 phase
C) cytokinesis
D) metaphase
E) prophase
14. Single sister chromatids are found in cells at
mitotic _____.
A) prophase and telophase
B) prophase and anaphase
C) prophase and metaphase
D) metaphase and anaphase.
E) anaphase and telophase
10. If a human muscle cells divide mitotically 5 times,
what will be expected the number of daughter cells
and their chromosome number?
A) 32-23 B) 10-23 C) 32-46 D) 32-10
15. Which of the following is false about mitosis cell
division?
A) Produce 2 cells.
B) Daughter and parent cell are identical
C) Chromosome number remains constant
D) Seen in body cells
E) It decreases chromosome number to haploid (n).
16. "Cytokinesis" refers to _____.
A) division of the entire cell
B) division of the nucleus
C) division of the cell outside the nuclear material
D) reduction in the number of chromosomes
E) cell movement
Date: _____/___________/ 2012
Signature: _____________________
BIOLOGY
CYTOLOGY
Topic 14: Meiosis
1. What is the aim of the Meiosis?
2. How many egg cells are produced at the end of
meiosis?
3. Which of the following is not correct for meiosis?
A) It reduces the chromosome numbers into half
B) Four cells form by one meiotic division
C) Occurs only in body cell
D) Occurs in reproductive cells
E) Involves two divisions
4. Why do cells divide in meiosis two times?
9. Which of the following best describes the
meiosis?
A) It is carried out in all tissues that require cell
replacement.
B) It occurs only in cells in the reproductive structures
of the organism.
C) It happens in all tissues except the brain and spinal
cord.
D) It is the first stage of mitosis.
10. Which of the following is true for meiosis II?
A) Sister chromatids separate each other
B) Crossing over is observed in prophase II
C) Chromosome number increase during the
metaphase II
D) Meiosis II occurs in somatic cells
E) After the meiosis II daughter cells can divide many
times again.
5. Which of the following occurs during anaphase I
of meiosis?
A) Formation of tetrads
B) Separation of homologous chromosomes
C) Crossing over
D) Separation of sister chromatids, with one chromatid
pulled toward each pole
E) Line up of chromosomes along the equatorial plane
11. If an organism receives 12 chromosomes from its
father, how many chromosomes can be expected in
its brain cells?
A) 12 B) 24
C) 64
D) 36 E) 38
6. What is the crossing-over? In which phase does it
occur?
13. What is the typical result when a diploid cell
undergoes meiosis?
A) two diploid cells
B) two haploid cells
C) four diploid cells
D) four haploid cells
E) two haploid cells and two diploid cells
12. Rice gamete cells contain 12 chromosomes. How
many chromosomes do rice diploid cells have?
A) 3
B) 6
C) 12
D) 24
E) 48
7. Fill in the blanks in figure given below.
14. Mitosis and cytokinesis result in the formation
of ______; meiosis and cytokinesis result in the
formation of ________.
A) four diploid cells ... four haploid cells
B) two diploid cells ... two haploid cells
C) two diploid cells ... four haploid cells
D) two diploid cells ... two diploid cells
E) four haploid cells ... two diploid cells
15. What are the differences between Mitosis and
Meiosis divisions?
16. Why does chromosome number of cells decrease
half of parent cell’s chromosomes?
8. At which stage of Meiosis are chromosomes
lined up in one plane in preparation for their
separation to opposite poles of the cell?
A) prophase I
B) metaphase I
C) anaphase I
D) telophase I
E) interphase
Date: _____/___________/ 2012
17. Where do Meiosis divisions occur in the body?
18. What is the effect of crossing-over at the variation of
organism?
Signature: _____________________