Cell Cycle And Cell Division
Test 2

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which structure is responsible for chromosome movement during cell division?

Golgi apparatus
Spindle fibers
Mitochondria
Endoplasmic reticulum
2

Spindle fibers, composed of microtubules, attach to kinetochores on chromosomes and facilitate their movement.

Which phase of interphase is characterized by intense metabolic activity and cell growth?

G1 phase
S phase
G2 phase
M phase
1

The G1 phase is the period between mitosis and DNA replication, characterized by active metabolism and cell growth.

Which of the following statements about mitosis is correct?

It occurs only in haploid cells
It results in genetically identical daughter cells
It reduces the chromosome number by half
It occurs only in reproductive cells
2

Mitosis produces two genetically identical daughter cells, maintaining the chromosome number of the parent cell.

Which of the following statements about G0 phase is correct?

Cells in G0 phase cannot divide again
Cells in G0 phase are metabolically inactive
Cells in G0 phase can re-enter the cell cycle under specific conditions
G0 phase is a part of mitosis
3

Cells in G0 phase are metabolically active and can re-enter the cell cycle when needed.

Which of the following statements about the G1 phase is incorrect?

It is the first phase of interphase
Cell growth and metabolism occur in this phase
DNA replication occurs in this phase
It precedes the S phase
3

DNA replication does not occur in G1; it takes place in the S phase.

Which of the following statements about mitosis is correct?

Mitosis occurs in both somatic and germ cells
Mitosis produces two diploid daughter cells
Mitosis results in genetic variation
Crossing over occurs in mitosis
2

Mitosis produces two genetically identical diploid daughter cells.

Which of the following statements about telophase is correct?

Spindle fibers begin to form
Chromosomes condense further
Nuclear membrane reforms
Sister chromatids remain attached
3

During telophase, the nuclear membrane reforms around each set of chromosomes, which decondense.

Which of the following phases is also known as the “resting phase” of the cell cycle?

G1 phase
G2 phase
S phase
G0 phase
4

The G0 phase is a quiescent phase where cells temporarily or permanently exit the cell cycle.

Which structure helps separate chromosomes during mitosis?

Nucleolus
Ribosomes
Spindle fibers
Lysosomes
3

Spindle fibers attach to chromosomes via kinetochores and help pull them apart during mitosis.

Which of the following statements about the cell cycle is correct?

Interphase consists of G1, S, and G2 phases
Mitosis is the longest phase of the cell cycle
DNA replication occurs in the G2 phase
Cell division does not occur in prokaryotes
1

Interphase consists of G1, S, and G2 phases, where the cell prepares for division. Mitosis is not the longest phase, and DNA replication occurs in the S phase.

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