1. In which stage of the cell cycle each chromosome is duplicated and so it consists of two chromatids?
(a) G1
(b) S✅
(c) M
(d) G2
2. During which phase of mitosis spindles are formed?
(a) G2
(b) Interphase
(c) Prophase✅
(d) Metaphase
3. In which stage of the cell cycle, the cell is preparing enzyme for chromosome replication?
(a) Gl✅
(b) G2
(c) S
(d) M
4. Which of the following stage of cell division is very different for animal and plant cells?
(a) Telophase
(b) Metaphase
(c) Anaphase
(d) Cytokinesis✅
5. Prior to cell division, each chromosome replicates or duplicates its genetic material, the products are connected by a centromere and are called;
(a) Sister chromosomes
(b) Homologous chromosomes
(c) Non-sister chromatids
(d) Sister chromatids✅
6. The process of mitosis ensures that:
(a) Each new cell is genetically different from its parent.
(b) Each new cell receives the proper number of chromosomes.✅
(c) Cells will divide at the appropriate time
(d) Chromosomes replicate without errors
7. Cytokinesis in a plant cell is characterized by;
(a) The equal division of homologous chromosomes.
(b) A pinching off of the cell membrane to divide the cell.
(c) The formation of a cell plate in the cytoplasm✅
(d) The movement of the chromosomes from the metaphase plate.
8. Which of the following is unique to mitosis and not a part of meiosis?
(a) Homologous chromosomes pair forming bivalents.
(b) Homologous chromosomes cross over.
(c) Chromosome pairs are broken during anaphase
(d) Chromatids anaphase separate during✅
9. Which event distinguishes meiosis from mitosis?
(a) Condensation of chromosomes
(b) Loss of the nuclear membrane
(c) Formation of metaphase plate.
(d) Pairing of homologous chromosomes.✅
10. In which stage of the cell cycle most cells spend their lives?
(a) Prophase
(b) Metaphase
(c) Interphase✅
(d) Telophase
11. Which of the following distinguishes meiosis from mitosis?
(a) The reduced. chromosome number is
(b)Chromosomes undergo crossing over.
(c) Daughter cells are genetically different from the parent cell.
(d) All of the above.✅
12. For mitosis, the chromosomes of the cells is duplicated during interphase. When do the chromosomes duplicated for meiosis?
(a) Before meiosis I✅
(b) Before meiosis II
(c) During Meiosis-1
(d) don't duplicate
13. Find the correct statement.
(a) Homologous chromosomes form pairs during mitosis.
(b) Chromosomes do not duplicate in the interphase preceding meiosis-I.
(c) Homologous chromosomes form pairs during meiosis but not mitosis.✅
(d) Spindles are not required during meiosis
14. What reason would you suggest for the fact that the total DNA content of each daughter cell is reduced during meiosis?
(a) Chromosomes do not replicate during the interphase before meiosis I.
(b) Chromosomes do not duplicate between meiosis I and II.✅
(c) Half of the chromosomes from each gamete are broken.
(d) Sister chromatids separate during anaphase of meiosis I.
16. Specific enzymes are synthesized by:
(a) G0
(b) G2
(c) S phase
(d) G1✅
17. The phase which can exist for life is:
(a) G0✅
(b) G2
(c) S phase
(d) G1
18. Chromosomes become double during:
(a) G2
(b) G0
(c) G1
(d) S phase✅
19. The longest phase is:
(a) Mitotic phase
(b) Meiosis
(c) Cell cycle
(d) Interphase✅
20. Type of spindle fibre which attaches the chromosomes is called:
(a) Kinetochore✅
(b) Non kinetochore
(c)Both a and b
(d) Centromere
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