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Flashcards on Cell Cycle
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What is the cell cycle?
The cell cycle refers to the series of events that take place in a cell leading to its division and the production of two daughter cells.
What are the stages of the cell cycle?
The stages of the cell cycle include interphase, mitosis, and cytokinesis.
What happens during interphase?
During interphase, the cell grows, carries out normal functions, and prepares for cell division.
What is mitosis?
Mitosis is the process of nuclear division in which the duplicated chromosomes are divided equally into two daughter nuclei.
What are the phases of mitosis?
The phases of mitosis include prophase, metaphase, anaphase, and telophase.
What happens during cytokinesis?
During cytokinesis, the cytoplasm of the cell divides, forming two separate daughter cells.
What is the purpose of cell division?
Cell division allows for growth, repair, and reproduction of organisms.
What is the role of checkpoints in the cell cycle?
Checkpoints ensure that each stage of the cell cycle is completed accurately before progressing to the next stage.
What is the difference between mitosis and meiosis?
Mitosis results in the formation of two identical daughter cells, while meiosis results in the formation of four genetically different daughter cells.
What is the significance of the cell cycle?
The cell cycle plays a crucial role in growth, development, and the maintenance of multicellular organisms.
What is the G1 phase of interphase?
The G1 phase is the first gap phase of interphase where the cell grows and carries out normal cellular functions.
What happens during the S phase of interphase?
During the S phase, DNA replication occurs, resulting in the duplication of the cell's genetic material.
What is the G2 phase of interphase?
The G2 phase is the second gap phase of interphase where the cell prepares for mitosis by synthesizing necessary molecules.
What triggers the cell cycle to progress from one phase to another?
Cyclin-dependent kinases (CDKs) and cyclins control the progression of the cell cycle by activating various checkpoints and initiating key events.
What happens if the cell cycle is not regulated properly?
Uncontrolled cell division can lead to the formation of tumors and cancer.
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Test Your Knowledge
During which phase of the cell cycle does DNA replication occur?
Prophase
Metaphase
S phase
Cytokinesis
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Which phase of mitosis involves the separation of sister chromatids?
Anaphase
Prophase
Metaphase
Telophase
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What is the main function of the G1 phase in interphase?
DNA replication
Cell growth and normal functions
Preparing for cytokinesis
Formation of the spindle fibers
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Which of the following accurately describes cytokinesis?
Division of the nucleus
Division of the cytoplasm
Formation of spindle fibers
Duplication of DNA
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What is the purpose of checkpoints in the cell cycle?
To stop cell division
To speed up cell division
To ensure accurate completion of each stage
To repair damaged DNA
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Which process results in the formation of four genetically different daughter cells?
Mitosis
Meiosis
Cytokinesis
Interphase
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What is the role of cyclin-dependent kinases (CDKs) and cyclins in the cell cycle?
Trigger DNA replication
Separate sister chromatids
Control the progression and key events
Complete cytokinesis
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Why is proper regulation of the cell cycle important?
To speed up growth and development
To prevent uncontrolled cell division and tumor formation
To increase cell size
To initiate DNA replication
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Which phase of the cell cycle usually occupies the longest duration?
Interphase
Prophase
Metaphase
Anaphase
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What are the consequences of uncontrolled cell division?
Tumor formation and cancer
Increased cell growth
Enhanced DNA replication
Decreased cytokinesis
Check Answers
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