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Cell Cycle and Cell Division Practice Questions

Class 11 · Biology · 2258 free MCQs with instant results and detailed explanations.

2258
Total
692
Easy
1112
Medium
454
Hard

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Topics in Cell Cycle and Cell Division

Cell Cycle 761
Mitosis 749
Meiosis 748

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 phase of the cell cycle where the cell grows and prepares for division?
A. Interphase
B. Mitosis
C. Cytokinesis
D. Prophase
Show Answer & Explanation
Correct Answer: A
Interphase is the stage where the cell undergoes growth and prepares for mitosis.
Q2
Easy
What is the end product of mitosis?
A. Two identical cells
B. Four identical cells
C. One new cell
D. Two different cells
Show Answer & Explanation
Correct Answer: A
Mitosis results in the formation of two identical daughter cells from a single parent cell.
Q3
Easy
Which checkpoint in the cell cycle is crucial for assessing DNA damage before DNA replication?
A. G1 checkpoint
B. S checkpoint
C. G2 checkpoint
D. M checkpoint
Show Answer & Explanation
Correct Answer: A
The G1 checkpoint checks for DNA damage and ensures conditions are suitable for DNA replication.
Q4
Medium
What is the primary purpose of the cell cycle?
A. Repair damaged tissues
B. Cell growth and division
C. Photosynthesis
D. Protein synthesis
Show Answer & Explanation
Correct Answer: B
The primary purpose of the cell cycle is to allow for cell growth and division, ensuring proper development and maintenance of organisms.
Q5
Medium
Which checkpoint in the cell cycle ensures that the cell is ready to enter mitosis?
A. G1 checkpoint
B. S checkpoint
C. G2 checkpoint
D. M checkpoint
Show Answer & Explanation
Correct Answer: C
The G2 checkpoint verifies if the DNA has been replicated correctly and if the cell is ready for mitosis.
Q6
Medium
What phase follows the G2 phase in the cell cycle?
A. G1 phase
B. S phase
C. M phase
D. Cytokinesis
Show Answer & Explanation
Correct Answer: C
The M phase follows the G2 phase and includes both mitosis and cytokinesis, where the cell divides.
Q7
Medium
In which phase does the chromatin condense into visible chromosomes?
A. Interphase
B. Prophase
C. Metaphase
D. Telophase
Show Answer & Explanation
Correct Answer: B
During prophase, chromatin condenses to form distinct visible chromosomes in preparation for cell division.
Q8
Hard
What is the primary purpose of the G1 phase in the cell cycle?
A. Cell growth and preparation for DNA synthesis
B. DNA replication
C. Separation of sister chromatids
D. Cytokinesis
Show Answer & Explanation
Correct Answer: A
The G1 phase is primarily about cell growth and preparing for DNA synthesis, ensuring the cell is ready for the next phase.
Q9
Hard
What is the role of cyclins in the cell cycle?
A. To initiate apoptosis
B. To regulate the cell cycle progression
C. To repair DNA damage
D. To provide energy for cell division
Show Answer & Explanation
Correct Answer: B
Cyclins are proteins that regulate the timing of the cell cycle in eukaryotic cells, activating cyclin-dependent kinases.
Q10
Hard
Which checkpoint in the cell cycle is primarily responsible for assessing DNA damage before replication?
A. G1 checkpoint
B. S checkpoint
C. G2 checkpoint
D. M checkpoint
Show Answer & Explanation
Correct Answer: A
The G1 checkpoint checks for DNA damage and ensures that the cell is ready for DNA replication before proceeding to S phase.

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Cell Cycle and Cell Division — Class 11 Biology Practice Questions Online

This page contains 2258 practice MCQs for the chapter Cell Cycle and Cell Division in Class 11 Biology. The questions are organized by difficulty — 692 easy, 1112 medium, 454 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 3 topics, giving you comprehensive coverage of the entire chapter.