by alex
Dive into the intricate world of cellular processes with our Cell Cycle Quiz! From the meticulous phases of mitosis to the checkpoints that ensure cellular fidelity, this quiz will challenge your understanding of how cells grow, replicate, and divide. Sharpen your knowledge and see how much you know about the fundamental processes that keep life ticking. Ready to test your skills?
Cell Cycle Quiz Questions Overview
1. Which phase of the cell cycle is characterized by the replication of DNA?
G1 phase
S phase
G2 phase
M phase
2. What is the primary function of the G1 phase in the cell cycle?
DNA replication
Cell growth and preparation for DNA synthesis
Mitosis
Cytokinesis
3. During which phase of mitosis do the chromosomes align at the cell’s equatorial plate?
Prophase
Metaphase
Anaphase
Telophase
4. What is the role of the spindle fibers during mitosis?
To replicate DNA
To align chromosomes at the metaphase plate
To separate sister chromatids
To reform the nuclear envelope
5. Which checkpoint ensures that all chromosomes are properly attached to the spindle apparatus before anaphase begins?
G1 checkpoint
G2 checkpoint
M checkpoint
S checkpoint
6. What is cytokinesis?
The division of the cell’s nucleus
The replication of DNA
The division of the cell’s cytoplasm
The alignment of chromosomes
7. Which protein is crucial for regulating the cell cycle and can trigger cell cycle arrest if DNA is damaged?
Cyclin
CDK (Cyclin-dependent kinase)
p53
Rb (Retinoblastoma protein)
8. What happens during the G2 phase of the cell cycle?
DNA replication
Cell growth and preparation for mitosis
Chromosome alignment
Cytokinesis
9. Which phase of mitosis is characterized by the reformation of the nuclear envelope around separated chromatids?
Prophase
Metaphase
Anaphase
Telophase
10. What is the main purpose of the cell cycle checkpoints?
To speed up cell division
To ensure the cell’s DNA is replicated correctly and any damage is repaired
To promote uncontrolled cell growth
To trigger apoptosis
