Podcast
Questions and Answers
What is the primary function of the cell cycle?
What is the primary function of the cell cycle?
- To ensure accurate DNA duplication and segregation (correct)
- To repair damaged tissues exclusively
- To produce energy for cellular activities
- To synthesize proteins only during G1 phase
Which phase of the cell cycle involves DNA replication?
Which phase of the cell cycle involves DNA replication?
- G1 phase
- Synthesis phase (correct)
- Mitosis phase
- Gap 2
What role do checkpoints play in the cell cycle?
What role do checkpoints play in the cell cycle?
- They speed up cell division
- They promote uncontrolled cell division
- They only check for organelle function
- They ensure each phase is completed accurately (correct)
During which phase does cytokinesis occur?
During which phase does cytokinesis occur?
Which of the following statements best describes the Mitosis process?
Which of the following statements best describes the Mitosis process?
Flashcards
Cell Cycle
Cell Cycle
A series of events where a cell grows, replicates its DNA, and divides into two identical daughter cells.
Interphase
Interphase
The longest phase of the cell cycle, where the cell prepares for division by growing and replicating DNA.
Mitosis
Mitosis
The process of separating replicated chromosomes into two new nuclei.
Cytokinesis
Cytokinesis
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Cell Cycle Regulation
Cell Cycle Regulation
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Study Notes
Cell Cycle Overview
- Cell cycle is a series of events for cell growth and division.
- Primary function is accurate DNA duplication and segregation into identical daughter cells.
- Crucial for growth, development, and tissue repair.
Interphase
- Longest phase; the cell prepares for division.
- G1 phase: Cell grows, synthesizes proteins for DNA replication, and performs regular functions.
- Synthesis phase: Cell replicates its DNA, resulting in two copies of each chromosome.
- G2 phase: Cell continues growth, produces proteins and organelles needed for mitosis, checks for DNA damage and ensures complete DNA replication.
M Phase (Mitosis and Cytokinesis)
- Involves the actual division of the cell.
- Mitosis: Separates replicated chromosomes into two new nuclei.
- Mitosis stages: Prophase, metaphase, anaphase, and telophase.
- Cytokinesis: Divides the cytoplasm, creating two distinct daughter cells.
Cell Cycle Regulation
- Tightly regulated checkpoints ensure accurate completion of each phase before the next.
- Checkpoints prevent errors like DNA damage or incomplete replication, which can lead to cell malfunction or cancer.
Importance of Cell Division
- Essential for growth, tissue repair, and reproduction.
- In multicellular organisms, replaces dead/damaged cells; in unicellular organisms, it's reproduction.
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