Quiz for Cell cycle

Q1: Which phase of the cell cycle is the longest?

A. G1 phase B. S phase C. G2 phase D. M phase

Q2: DNA replication occurs during which phase?

A. G1 phase B. S phase C. G2 phase D. M phase

Q3: During which phase do chromosomes align at the equator?

A. Prophase B. Metaphase C. Anaphase D. Telophase

Q4: Which checkpoint checks for DNA damage after replication?

A. G1 checkpoint B. G2 checkpoint C. M checkpoint D. S checkpoint

Q5: What marks the end of mitosis?

A. Cytokinesis B. Prophase C. Anaphase D. Telophase

Q6: In which phase does the nuclear envelope disintegrate?

A. Prophase B. Metaphase C. Anaphase D. Telophase

Q7: Cytokinesis in plant cells involves the formation of?

A. Cleavage furrow B. Cell plate C. Contractile ring D. Spindle fibers

Q8: Which protein regulates the cell cycle checkpoints?

A. Keratin B. Myosin C. Cyclin D. Collagen

Q9: What occurs during anaphase?

A. Chromosomes condense B. Chromosomes align C. Sister chromatids separate D. Nuclear envelope reforms

Q10: The mitotic spindle is formed by?

A. Centriole B. Lysosome C. Ribosome D. Golgi apparatus

Q11: Which of the following is NOT part of interphase?

A. G1 phase B. S phase C. G2 phase D. Prophase

Q12: In animal cells, cytokinesis is achieved by?

A. Cell plate formation B. Cleavage furrow C. Nuclear fission D. Chromatid splitting

Q13: Centrioles replicate during which phase?

A. G1 phase B. S phase C. G2 phase D. M phase

Q14: Which phase is characterized by chromatin condensation?

A. Prophase B. Metaphase C. Anaphase D. Telophase

Q15: Spindle fibers attach to chromosomes at?

A. Telomere B. Centromere C. Kinetochore D. Chromatid

Q16: How many chromatids are there after S phase in a human somatic cell?

A. 23 B. 46 C. 92 D. 184

Q17: Cell division without growth is called?

A. Amitosis B. Apoptosis C. Cleavage D. Meiosis

Q18: Which enzyme is involved in cytokinesis?

A. DNA polymerase B. RNA polymerase C. Actin D. Pepsin

Q19: Which stage immediately follows metaphase?

A. Prophase B. Telophase C. Anaphase D. Interphase

Q20: What is the total duration of cell cycle in human cells?

A. 12 hours B. 18 hours C. 24 hours D. 30 hours