Questions and Answers
What is the cell cycle?
Series of events in which a cell grows, prepares for division, and divides to form two daughter cells.
What occurs during interphase?
This phase occurs about 90% of the time.
What happens during the G1 phase?
Cell grows.
What is the synthesis phase responsible for?
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What occurs during the G2 phase?
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What is the M-phase?
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What is happening during prophase?
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What characterizes metaphase?
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What happens during anaphase?
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What occurs in telophase?
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What is cytokinesis?
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Study Notes
Cell Cycle Overview
- The cell cycle consists of a series of events where a cell grows, prepares for division, and divides into two daughter cells.
- Interphase constitutes approximately 90% of the cell cycle duration.
Interphase
- Comprises three main sub-phases: G1, Synthesis Phase, and G2.
G1 Phase
- Known as the first growth phase.
- The cell undergoes significant growth and prepares for DNA synthesis.
Synthesis Phase
- Characterized by DNA replication, where each chromosome is replicated, ensuring genetic material is doubled.
G2 Phase
- Described as the second growth phase.
- The cell prepares for mitosis, ensuring it has sufficient components and energy for cell division.
M-Phase (Mitosis)
- Represents the phase where mitosis occurs, encompassing four distinct stages: Prophase, Metaphase, Anaphase, and Telophase.
Prophase
- In this phase, chromosomes become visible as they condense, and the mitotic spindle begins to form.
Metaphase
- Chromosomes align in the middle of the cell, attached to the spindle apparatus at their centromeres.
Anaphase
- Chromatids of each chromosome are split apart and move toward opposite poles of the cell, ensuring each new cell will receive equal genetic material.
Telophase
- During this stage, the nuclear envelope reforms around each set of separated chromosomes, resulting in two nuclei within the cell.
Cytokinesis
- The final process where the cytoplasm divides, leading to the formation of two distinct daughter cells, each capable of entering its own cell cycle.
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Description
Explore the critical stages of the cell cycle, including Interphase, G1, Synthesis, G2, and M-phase. Understand the processes of growth and division that lead to the formation of new cells. This quiz covers key concepts and important phases of the cell cycle.
