by ggerhold
The cell cycle is a fundamental process that drives cell growth, replication, and division. Understanding the stages and regulatory mechanisms of the cell cycle is crucial for comprehending how organisms develop, maintain their tissues, and respond to environmental changes. This quiz will take you through various aspects of the cell cycle, from the detailed phases to the vital checkpoints that ensure proper cell division. Get ready to test your knowledge and deepen your understanding of this essential biological process. Good luck!
We recommend that you do not leave the page that you are taking this quiz in. Stay honest 🙂
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
Chromosome segregation
Cytokinesis
3. Which checkpoint ensures that all chromosomes are properly attached to the spindle apparatus before anaphase begins?
G1 checkpoint
G2 checkpoint
M checkpoint
S checkpoint
4. What is the role of cyclins in the cell cycle?
They degrade damaged DNA.
They regulate the timing of the cell cycle.
They form the spindle apparatus.
They synthesize new DNA.
5. During which phase of mitosis do sister chromatids separate and move toward opposite poles?
Prophase
Metaphase
Anaphase
Telophase
6. Which enzyme is responsible for unwinding the DNA helix during replication?
DNA polymerase
Helicase
Ligase
Topoisomerase
7. What occurs during cytokinesis?
DNA replication
Nuclear division
Cytoplasmic division
Chromosome alignment
8. Which phase of the cell cycle is the longest?
G1 phase
S phase
G2 phase
Interphase
9. What is the main purpose of the G2 checkpoint?
To ensure DNA is undamaged and fully replicated
To check for proper spindle attachment
To initiate DNA replication
To separate sister chromatids
10. Which protein is known as the ‘guardian of the genome’ for its role in preventing cancer?
Cyclin D
p53
Rb
CDK1
11. During which phase of mitosis does the nuclear envelope re-form around the separated chromosomes?
Prophase
Metaphase
Anaphase
Telophase
12. What is the role of the spindle fibers during mitosis?
To replicate DNA
To condense chromatin
To separate sister chromatids
To form the nuclear envelope
13. Which phase of the cell cycle is characterized by the condensation of chromatin into visible chromosomes?
Prophase
Metaphase
Anaphase
Telophase
14. What is the main function of the G1 checkpoint?
To ensure DNA is undamaged and ready for replication
To check for proper spindle attachment
To initiate cytokinesis
To separate sister chromatids
15. What structure forms during cytokinesis in plant cells to divide the cell into two daughter cells?
Cleavage furrow
Cell plate
Spindle apparatus
Centrosome
16. Which phase of the cell cycle involves the separation of the cytoplasm into two daughter cells?
Prophase
Metaphase
Anaphase
Cytokinesis
17. What is the role of the protein kinase CDK in the cell cycle?
To degrade damaged DNA
To regulate the cell cycle progression
To form the spindle apparatus
To synthesize new DNA
We recommend that you do not leave the page that you are taking this quiz in. Stay honest 🙂
