Cell Cycle And Cell Division
Test 3

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which phase of the cell cycle is known as the "resting phase"?

G0 phase
G1 phase
S phase
M phase
1

The G0 phase is a quiescent stage where cells do not divide but remain metabolically active.

Which of the following statements about the quiescent phase (G0) is correct?

Cells in G0 never re-enter the cell cycle
G0 phase is a metabolically inactive state
Cells can re-enter the cell cycle when required
G0 phase is the shortest phase in the cell cycle
3

Cells in G0 remain metabolically active and can re-enter the cell cycle when stimulated by external signals.

Which of the following occurs during telophase I of meiosis?

Sister chromatids separate
Homologous chromosomes reach opposite poles
Chromosomes condense
Spindle fibers attach to kinetochores
2

During telophase I, homologous chromosomes reach opposite poles, and nuclear membranes may reappear.

What is the function of the centrioles during mitosis?

To condense chromosomes
To form spindle fibers
To initiate DNA replication
To form nuclear membrane
2

Centrioles help in forming spindle fibers that assist in the movement of chromosomes during mitosis.

Which of the following statements about diplotene is correct?

Synapsis occurs in this stage
Chiasmata become visible
Chromosomes condense completely
Nuclear membrane reforms
2

During diplotene, chiasmata (points of crossing over) become visible as homologous chromosomes start separating.

Which of the following statements about meiosis II is correct?

Meiosis II reduces the chromosome number
Meiosis II involves separation of homologous chromosomes
Meiosis II resembles mitosis
Meiosis II produces diploid daughter cells
3

Meiosis II is similar to mitosis in that sister chromatids separate, but it does not reduce the chromosome number further.

Which of the following is incorrect about cytokinesis?

Cytokinesis follows nuclear division
Animal cells undergo cytokinesis by forming a cell plate
Cytokinesis ensures equal distribution of cytoplasm
Cytokinesis differs between plant and animal cells
2

Animal cells divide by forming a cleavage furrow, whereas plant cells form a cell plate.

Which of the following phases is the longest in the cell cycle?

G1 phase
G2 phase
S phase
M phase
1

G1 phase is the longest phase of the cell cycle, where cells grow and prepare for DNA replication.

Which of the following is NOT a function of mitosis?

Growth of multicellular organisms
Repair and replacement of damaged cells
Formation of gametes
Asexual reproduction
3

Gamete formation occurs through meiosis, not mitosis. Mitosis is responsible for growth, repair, and asexual reproduction.

Which of the following is incorrect about prophase of mitosis?

Chromatin condenses into chromosomes
Nuclear envelope breaks down
Spindle fibers start forming
Chromosomes are aligned at the equator
4

During prophase, chromosomes condense, the nuclear membrane breaks down, and spindle fibers form, but chromosome alignment occurs in metaphase.

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