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Cell Cycle And Cell Division Mock Tests

29 questions available

Cell Cycle And Cell Division Mock Test 1

Questions: 29

नमूना प्रश्न

Class 11 Biology
Crossing over, the exchange of genetic material between homologous chromosomes, occurs during which sub-stage of meiosis I?
A Pachytene
B Leptotene
C Diplotene
D Diakinesis
Class 11 Biology
What is the correct sequence of stages in the M phase of the cell cycle?
A Prophase → Metaphase → Anaphase → Telophase → Cytokinesis
B Prophase → Anaphase → Metaphase → Telophase → Cytokinesis
C Prophase → Metaphase → Telophase → Anaphase → Cytokinesis
D Prophase → Telophase → Metaphase → Anaphase → Cytokinesis
Class 11 Biology
During which phase of the cell cycle does DNA replication occur?
A S phase (Synthesis phase) of Interphase
B G₁ phase (Gap 1)
C G₂ phase (Gap 2)
D Prophase of mitosis
Class 11 Biology
During which phase of interphase does the cell synthesise proteins and organelles required for DNA replication?
A S phase
B G₂ phase
C G₁ phase
D G₀ phase
Class 11 Biology
During which stage of meiosis does crossing over between homologous chromosomes occur?
A Leptotene
B Zygotene
C Pachytene
D Diplotene
Class 11 Biology
Crossing over between non-sister chromatids of homologous chromosomes occurs during which stage of meiosis?
A Leptotene
B Zygotene
C Pachytene
D Diplotene
Class 11 Biology
What is the role of cyclins and cyclin-dependent kinases (CDKs) in regulating the cell cycle?
A Cyclins regulate the cell cycle by activating CDKs through binding; the cyclin-CDK complex phosphorylates target proteins to drive the cycle forward
B Cyclins directly replicate DNA; CDKs break down the nuclear envelope
C Cyclins form spindle fibres; CDKs split centromeres
D Cyclins and CDKs have no role in cell cycle regulation
Class 11 Biology
During which phase of the cell cycle does DNA replication occur, resulting in each chromosome consisting of two sister chromatids?
A G₁ phase
B S phase
C G₂ phase
D M phase

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