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Questions and Answers
What is apoptosis?
What is apoptosis?
Programmed cell death
What are the stages of interphase?
What are the stages of interphase?
Cell division occurs only in single-celled organisms.
Cell division occurs only in single-celled organisms.
False
Match the term with its description:
Match the term with its description:
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Mitosis is followed by _____, the division of the cytoplasm.
Mitosis is followed by _____, the division of the cytoplasm.
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Study Notes
Cell Division
- Cell division enables a single-celled fertilized egg to grow into a multi-cellular organism.
- Somatic cells, which are body cells continue to undergo cell division throughout life.
- Apoptosis, also known as programmed cell death, decreases the number of cells. It's crucial in removing unwanted tissue.
- The cell cycle is an orderly series of stages that occurs between the time a cell divides and the time the resulting daughter cells also divide.
Stages of the Cell Cycle
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Interphase is divided into three phases: G1, S, and G2.
- G1 - stage before DNA synthesis.
- S - DNA replication.
- G2 - stage after DNA synthesis.
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Mitotic Stage
- Mitosis - division of the nucleus.
- Cytokinesis - division of the cytoplasm.
Interphase Stages Explained
- G1 (Gap 1) Stage: The cell doubles its organelles and accumulates materials for DNA synthesis.
- G0 Stage: Some cells enter G0, a pause stage where they carry out normal functions but do not prepare to divide.
- S (Synthesis) Stage: DNA replication occurs, where a chromosome, originally with one DNA molecule, now has two DNA molecules known as sister chromatids.
- G2 (Gap 2) Stage: The cell synthesizes proteins needed for cell division.
Mitotic Stage Explained
- Mitosis : After interphase, the nucleus divides and the sister chromatids separate into daughter chromosomes which are distributed to two daughter nuclei.
- Cytokinesis: Follows mitosis, dividing the cytoplasm. The result is two daughter cells identical to the original mother cell.
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Description
Test your knowledge on cell division and the cell cycle with this quiz. Explore the stages of interphase and the mitotic stage, including important processes like apoptosis and cytokinesis. Perfect for biology students looking to reinforce their understanding of cellular processes.
