Cell Cycle and Cell Division Practice Questions
NEET · Biology · 1093 free MCQs with instant results and detailed explanations.
1093
Total
264
Easy
436
Medium
393
Hard
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Topics in Cell Cycle and Cell Division
Cell Cycle Phases
328
Meiosis
111
Significance of Cell Division
75
Cell Cycle
419
Mitosis
160
Sample Questions from Cell Cycle and Cell Division
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
What is the primary purpose of the cell cycle?
A.
To produce energy for the cell
B.
To enable growth and reproduction of cells
C.
To synthesize proteins
D.
To transport nutrients
Show Answer & Explanation
Correct Answer: B
The primary purpose of the cell cycle is to enable growth and reproduction of cells, allowing organisms to develop and maintain their tissues.
Q2
Easy
During which phase of the cell cycle does DNA replication occur?
A.
M phase
B.
G1 phase
C.
S phase
D.
G2 phase
Show Answer & Explanation
Correct Answer: C
DNA replication occurs during the S phase of the cell cycle, where each chromosome is duplicated to prepare for cell division.
Q3
Easy
Which of the following correctly describes the G1 phase?
A.
Cell growth and preparation for DNA synthesis
B.
DNA is replicated
C.
Cell divides into two daughter cells
D.
Cell undergoes mitosis
Show Answer & Explanation
Correct Answer: A
The G1 phase is primarily characterized by cell growth and preparation for DNA synthesis, setting the stage for the S phase.
Q4
Medium
In which phase of mitosis do the chromosomes align at the equatorial plane of the cell?
A.
Prophase
B.
Metaphase
C.
Anaphase
D.
Telophase
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Correct Answer: B
During Metaphase, chromosomes line up at the equatorial plane, preparing for separation to opposite poles of the cell.
Q5
Medium
What is the main function of cyclins in the cell cycle?
A.
To transport nutrients
B.
To regulate progression
C.
To synthesize proteins
D.
To repair DNA
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Correct Answer: B
Cyclins are proteins that regulate the cell cycle by activating cyclin-dependent kinases, which control the progression of the cell cycle.
Q6
Medium
Which of the following events occurs during the G2 phase of the cell cycle?
A.
DNA synthesis
B.
Cell growth and preparation for mitosis
C.
Cytokinesis
D.
Chromosome separation
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Correct Answer: B
The G2 phase involves cell growth and preparation for mitosis, ensuring that the cell is ready to divide, while DNA synthesis occurs in the S phase.
Q7
Medium
What is the significance of the spindle apparatus in mitosis?
A.
To replicate DNA
B.
To break down the nuclear envelope
C.
To separate sister chromatids
D.
To synthesize proteins
Show Answer & Explanation
Correct Answer: C
The spindle apparatus is crucial for separating sister chromatids during anaphase, ensuring that each daughter cell receives an identical set of chromosomes.
Q8
Hard
During which phase of mitosis does the nuclear envelope break down?
A.
Prophase
B.
Metaphase
C.
Anaphase
D.
Telophase
Show Answer & Explanation
Correct Answer: A
The nuclear envelope disintegrates during prophase, allowing the chromosomes to become visible and move towards the metaphase plate.
Q9
Hard
What is the significance of the G0 phase in the cell cycle?
A.
Cells prepare for division.
B.
Cells are metabolically inactive.
C.
Cells replicate DNA.
D.
Cells undergo apoptosis.
Show Answer & Explanation
Correct Answer: B
In the G0 phase, cells exit the cycle and enter a quiescent state where they are metabolically active but not dividing.
Q10
Hard
What is the main checkpoint in the cell cycle that assesses DNA integrity before mitosis?
A.
G1 checkpoint
B.
G2 checkpoint
C.
M checkpoint
D.
S checkpoint
Show Answer & Explanation
Correct Answer: B
The G2 checkpoint evaluates the integrity of DNA after replication, ensuring that any DNA damage is repaired before mitosis begins.
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Cell Cycle and Cell Division — NEET Biology Practice Questions Online
This page contains 1093 practice MCQs for the chapter Cell Cycle and Cell Division in NEET Biology. The questions are organized by difficulty — 264 easy, 436 medium, 393 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 5 topics, giving you comprehensive coverage of the entire chapter.