Q. During which phase of mitosis do the chromosomes align at the cell's equatorial plane? (2021)
A.
Prophase
B.
Metaphase
C.
Anaphase
D.
Telophase
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Solution
During metaphase, chromosomes align at the metaphase plate, preparing for separation.
Correct Answer:
B
— Metaphase
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Q. In which phase do sister chromatids separate and move to opposite poles of the cell? (2019)
A.
Prophase
B.
Metaphase
C.
Anaphase
D.
Telophase
Show solution
Solution
During Anaphase, sister chromatids are pulled apart and move towards opposite poles of the cell.
Correct Answer:
C
— Anaphase
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Q. In which phase do sister chromatids separate and move to opposite poles? (2019)
A.
Prophase
B.
Metaphase
C.
Anaphase
D.
Telophase
Show solution
Solution
During Anaphase, sister chromatids are pulled apart and move toward opposite poles of the cell.
Correct Answer:
C
— Anaphase
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Q. In which phase do sister chromatids separate and move towards opposite poles? (2022)
A.
Prophase
B.
Metaphase
C.
Anaphase
D.
Telophase
Show solution
Solution
During Anaphase, sister chromatids are pulled apart and move towards opposite poles of the cell.
Correct Answer:
C
— Anaphase
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Q. In which phase of the cell cycle does cytokinesis occur? (2021)
A.
G1 phase
B.
S phase
C.
M phase
D.
G2 phase
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Solution
Cytokinesis occurs during the M phase, following mitosis, to divide the cytoplasm and form two daughter cells.
Correct Answer:
C
— M phase
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Q. In which phase of the cell cycle does the cell spend most of its life? (2021)
A.
M phase
B.
G1 phase
C.
S phase
D.
G2 phase
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Solution
The G1 phase is where the cell spends most of its time growing and performing its normal functions.
Correct Answer:
B
— G1 phase
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Q. In which phase of the cell cycle does the cell spend the majority of its life? (2021)
A.
M phase
B.
G1 phase
C.
S phase
D.
G2 phase
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Solution
The G1 phase is where the cell spends most of its life, performing normal functions and growing.
Correct Answer:
B
— G1 phase
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Q. What happens during telophase of mitosis? (2019)
A.
Chromosomes condense
B.
Nuclear envelope re-forms
C.
Spindle fibers disappear
D.
Both B and C
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Solution
During telophase, the nuclear envelope re-forms around the separated chromosomes, and spindle fibers disappear.
Correct Answer:
D
— Both B and C
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Q. What is the main purpose of the G1 phase in the cell cycle? (2022)
A.
DNA replication
B.
Cell growth and preparation for DNA synthesis
C.
Chromosome separation
D.
Cell division
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Solution
The G1 phase is primarily for cell growth and preparation for DNA synthesis.
Correct Answer:
B
— Cell growth and preparation for DNA synthesis
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Q. What is the main purpose of the S phase in the cell cycle? (2022)
A.
Cell growth
B.
DNA replication
C.
Cell division
D.
Protein synthesis
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Solution
The S phase is specifically for DNA replication, ensuring that each daughter cell receives a complete set of chromosomes.
Correct Answer:
B
— DNA replication
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Q. What is the phase of the cell cycle where DNA is replicated? (2020)
A.
G1 phase
B.
S phase
C.
G2 phase
D.
M phase
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Solution
The S phase (Synthesis phase) is where DNA replication occurs, resulting in the duplication of chromosomes.
Correct Answer:
B
— S phase
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Q. What is the phase of the cell cycle where the cell grows and prepares for mitosis? (2020)
A.
G1 phase
B.
S phase
C.
G2 phase
D.
M phase
Show solution
Solution
The G1 phase is the first stage of interphase where the cell grows and prepares for DNA replication.
Correct Answer:
A
— G1 phase
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Q. What is the primary function of the G2 phase? (2020)
A.
Cell growth
B.
DNA replication
C.
Preparation for mitosis
D.
Cytokinesis
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Solution
The G2 phase is primarily for preparing the cell for mitosis, including the synthesis of proteins necessary for cell division.
Correct Answer:
C
— Preparation for mitosis
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Q. What is the result of cytokinesis in animal cells? (2020)
A.
Formation of a cell plate
B.
Formation of two daughter cells
C.
Replication of DNA
D.
Separation of sister chromatids
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Solution
Cytokinesis results in the physical separation of the cytoplasm, leading to the formation of two daughter cells.
Correct Answer:
B
— Formation of two daughter cells
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Q. What is the role of cyclins in the cell cycle? (2019)
A.
To inhibit cell division
B.
To promote apoptosis
C.
To regulate the cell cycle
D.
To repair DNA
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Solution
Cyclins are proteins that regulate the progression of the cell cycle by activating cyclin-dependent kinases (CDKs).
Correct Answer:
C
— To regulate the cell cycle
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Q. What is the role of the M checkpoint in the cell cycle? (2023)
A.
To check for DNA damage
B.
To ensure chromosomes are properly aligned
C.
To initiate DNA replication
D.
To signal the end of cytokinesis
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Solution
The M checkpoint ensures that all chromosomes are properly aligned at the metaphase plate before the cell proceeds to anaphase.
Correct Answer:
B
— To ensure chromosomes are properly aligned
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Q. What is the significance of the G2 phase in the cell cycle? (2022)
A.
Preparation for mitosis
B.
DNA replication
C.
Cell growth
D.
Chromosome alignment
Show solution
Solution
The G2 phase is crucial for preparing the cell for mitosis, ensuring all DNA is replicated and the cell is ready to divide.
Correct Answer:
A
— Preparation for mitosis
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Q. What is the term for the division of the cytoplasm during cell division? (2020)
A.
Mitosis
B.
Cytokinesis
C.
Interphase
D.
Telophase
Show solution
Solution
Cytokinesis is the process that divides the cytoplasm of a parental cell into two daughter cells.
Correct Answer:
B
— Cytokinesis
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Q. What structure forms during prophase to help separate chromosomes? (2022)
A.
Centromere
B.
Spindle fibers
C.
Chromatin
D.
Nuclear envelope
Show solution
Solution
Spindle fibers form during prophase to help separate the chromosomes during mitosis.
Correct Answer:
B
— Spindle fibers
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Q. Which checkpoint in the cell cycle ensures that DNA is not damaged before replication? (2023)
A.
G1 checkpoint
B.
G2 checkpoint
C.
M checkpoint
D.
S checkpoint
Show solution
Solution
The G1 checkpoint assesses the cell's size and DNA integrity before it enters the S phase for replication.
Correct Answer:
A
— G1 checkpoint
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Q. Which of the following is NOT a stage of the cell cycle? (2019)
A.
Interphase
B.
Prophase
C.
Cytokinesis
D.
Synthesis
Show solution
Solution
Synthesis is not a stage of the cell cycle; it refers to the S phase where DNA is replicated.
Correct Answer:
D
— Synthesis
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Q. Which phase follows metaphase in mitosis? (2023)
A.
Prophase
B.
Anaphase
C.
Telophase
D.
Interphase
Show solution
Solution
Anaphase follows metaphase, where sister chromatids are pulled apart to opposite poles of the cell.
Correct Answer:
B
— Anaphase
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Q. Which phase of the cell cycle is characterized by the division of the nucleus? (2018)
A.
Interphase
B.
Mitosis
C.
Cytokinesis
D.
G2 phase
Show solution
Solution
Mitosis is the phase of the cell cycle where the nucleus divides, resulting in two nuclei.
Correct Answer:
B
— Mitosis
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Q. Which phase of the cell cycle is characterized by the preparation for mitosis? (2021)
A.
G1 phase
B.
S phase
C.
G2 phase
D.
M phase
Show solution
Solution
The G2 phase is where the cell prepares for mitosis, ensuring all DNA is replicated and the cell is ready to divide.
Correct Answer:
C
— G2 phase
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Q. Which phase of the cell cycle is characterized by the replication of DNA? (2023)
A.
G1 phase
B.
S phase
C.
G2 phase
D.
M phase
Show solution
Solution
The S phase is specifically designated for DNA replication, ensuring that each daughter cell receives a complete set of genetic material.
Correct Answer:
B
— S phase
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Showing 1 to 25 of 25 (1 Pages)
Cell Biology - Cell Cycle & Division MCQ & Objective Questions
The study of Cell Biology, particularly the Cell Cycle and Division, is crucial for students preparing for school and competitive exams. Understanding these concepts not only helps in grasping the fundamentals of life sciences but also enhances your ability to tackle MCQs effectively. Practicing objective questions related to the Cell Cycle and Division can significantly improve your exam preparation and boost your confidence in answering important questions.
What You Will Practise Here
Phases of the Cell Cycle: Interphase, Mitosis, and Cytokinesis
Key events and checkpoints during the Cell Cycle
Differences between Mitosis and Meiosis
Regulatory proteins and their roles in cell division
Diagrammatic representation of the Cell Cycle stages
Common terminologies: Chromosomes, Chromatids, and Centromeres
Impact of external factors on cell division
Exam Relevance
The topic of Cell Biology - Cell Cycle and Division is frequently featured in various examinations, including CBSE, State Boards, NEET, and JEE. Students can expect questions that assess their understanding of the phases of the Cell Cycle, the differences between Mitosis and Meiosis, and the implications of cell division in growth and development. Common question patterns include multiple-choice questions that require identification of phases, definitions, and applications of key concepts.
Common Mistakes Students Make
Confusing the phases of Mitosis with those of Meiosis
Overlooking the significance of checkpoints in the Cell Cycle
Misunderstanding the role of regulatory proteins
Neglecting to memorize key definitions and terminologies
FAQs
Question: What are the main phases of the Cell Cycle?Answer: The main phases of the Cell Cycle include Interphase, Mitosis, and Cytokinesis.
Question: How does Mitosis differ from Meiosis?Answer: Mitosis results in two identical daughter cells, while Meiosis produces four genetically diverse gametes.
Ready to enhance your understanding of Cell Biology? Dive into our practice MCQs and test your knowledge on the Cell Cycle and Division. Your success in exams starts with solid preparation!
