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Questions and Answers
During which phase of the cell cycle does DNA replication occur?
During which phase of the cell cycle does DNA replication occur?
What is the function of the centrosome in animal cells?
What is the function of the centrosome in animal cells?
What is the purpose of the G1 checkpoint in the cell cycle?
What is the purpose of the G1 checkpoint in the cell cycle?
What are the two basic things that cells must accomplish during the cell cycle?
What are the two basic things that cells must accomplish during the cell cycle?
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Which phase of the cell cycle corresponds to the division activity?
Which phase of the cell cycle corresponds to the division activity?
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What is the main function of cyclin dependent kinases (CDKs) in the cell cycle?
What is the main function of cyclin dependent kinases (CDKs) in the cell cycle?
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What is the term used to describe the alternating 'growth' and 'division' activities of the cell?
What is the term used to describe the alternating 'growth' and 'division' activities of the cell?
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What is the term used to describe the duplication of the centrosome?
What is the term used to describe the duplication of the centrosome?
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What is the main function of the G1 phase in the cell cycle?
What is the main function of the G1 phase in the cell cycle?
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What is the term used to describe the phase of the cell cycle where all chromosomes are duplicated?
What is the term used to describe the phase of the cell cycle where all chromosomes are duplicated?
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During which phase of mitosis do the chromatids separate and move toward the opposite spindle poles?
During which phase of mitosis do the chromatids separate and move toward the opposite spindle poles?
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What is the function of centrioles in cell division?
What is the function of centrioles in cell division?
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Which phase of mitosis is characterized by the breakdown of the nuclear envelope?
Which phase of mitosis is characterized by the breakdown of the nuclear envelope?
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What is the function of cyclin-dependent kinases (Cdks) in the cell cycle?
What is the function of cyclin-dependent kinases (Cdks) in the cell cycle?
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Which cyclin-Cdk complex is responsible for the activation of mitosis?
Which cyclin-Cdk complex is responsible for the activation of mitosis?
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What is the role of cyclin-dependent kinase inhibitors (CDKIs) in cell cycle regulation?
What is the role of cyclin-dependent kinase inhibitors (CDKIs) in cell cycle regulation?
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Which of the following is NOT a phase of mitosis?
Which of the following is NOT a phase of mitosis?
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What is the function of the cleavage furrow in cytokinesis?
What is the function of the cleavage furrow in cytokinesis?
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What is the role of histones in mitosis?
What is the role of histones in mitosis?
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What is the function of DNA topoisomerase II in mitosis?
What is the function of DNA topoisomerase II in mitosis?
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Study Notes
Cell Cycle Phases
- DNA replication occurs during the S phase of the cell cycle.
- The G1 checkpoint is a crucial phase in the cell cycle that ensures the cell is ready to enter the S phase, and it's where the cell checks for any DNA damage or other issues.
- The two basic things that cells must accomplish during the cell cycle are growth (increasing in size) and division (splitting into two daughter cells).
Mitosis Phases
- The phase of the cell cycle that corresponds to the division activity is Mitosis.
- During the Anaphase phase of mitosis, the chromatids separate and move toward the opposite spindle poles.
- The breakdown of the nuclear envelope occurs during the Prophase phase of mitosis.
Cell Division Structures
- The centrosome is responsible for the duplication of the centrioles, and it plays a crucial role in the formation of the spindle fibers during cell division.
- The function of centrioles in cell division is to form the spindle fibers, which are essential for the separation of chromosomes during mitosis.
Cell Cycle Regulation
- The main function of cyclin-dependent kinases (CDKs) in the cell cycle is to trigger the progression of the cell cycle by phosphorylating and activating other proteins.
- The cyclin-Cdk complex that is responsible for the activation of mitosis is the cyclin B-Cdk1 complex.
- Cyclin-dependent kinase inhibitors (CDKIs) play a crucial role in cell cycle regulation by inhibiting the activity of CDKs, thereby preventing the cell from entering the next phase of the cell cycle.
Mitosis and Cytokinesis
- The cleavage furrow is a structure that forms in the cell membrane during cytokinesis, and its function is to divide the cell into two daughter cells.
- Histones play a crucial role in mitosis by compacting the DNA into chromosomes, making it easier to separate and move during cell division.
- DNA topoisomerase II is an enzyme that plays a crucial role in mitosis by relieving the tension that builds up in the chromosomes as they condense and separate during cell division.
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Description
Test your knowledge on the cell cycle and its main events, phases, regulation, replication, and checkpoints. This quiz will cover topics such as cyclin dependent kinases (CDKs), chromosome replication, DNA replication, centrosome duplication, and more. Challenge yourself and see how well you understand the cell cycle!
