Cell Division Revision
- Created by: Zoe
- Created on: 17-05-13 16:19
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- Cell Division
- Cell Cycle
- Repetitive process of growing and dividing
- Growth Stage
- Synthesis
- Second Growth Stage
- Mitosis
- Cytokinesis
- Cleavage of the Cytoplasm
- Nuclear Division
- Cytokinesis
- Replication of chromosomes
- Mitosis
- Proteins made and organelles replicated
- Second Growth Stage
- Synthesis
- Two types of cell division in eukaryotes
- Meiosis
- Gametes
- Genetically Different
- Four daughter Cells
- Mitosis
- Genetically Identical
- Body Cells
- Two daughter cells
- Meiosis
- Mitosis
- Prophase: chromosomesuper-coil, centrioles form spindle, nuclear envelope breaks
- Metaphase: chromosomes line up along central region
- Anaphase: spindles contract, pulling chromatids to opposite ends of the cell
- Telophase: chromatids uncoil and nuclear envelope forms
- Mitosis
- Prophase: chromosomesuper-coil, centrioles form spindle, nuclear envelope breaks
- Metaphase: chromosomes line up along central region
- Anaphase: spindles contract, pulling chromatids to opposite ends of the cell
- Telophase: chromatids uncoil and nuclear envelope forms
- Telophase: chromatids uncoil and nuclear envelope forms
- Anaphase: spindles contract, pulling chromatids to opposite ends of the cell
- Metaphase: chromosomes line up along central region
- Ensures that:
- damaged issues are replaced with identical cells
- Each daughter cell has a full set of chromosomes
- there is no genetic variation
- Prophase: chromosomesuper-coil, centrioles form spindle, nuclear envelope breaks
- Mitosis
- Telophase: chromatids uncoil and nuclear envelope forms
- Anaphase: spindles contract, pulling chromatids to opposite ends of the cell
- Metaphase: chromosomes line up along central region
- Ensures that:
- damaged issues are replaced with identical cells
- Each daughter cell has a full set of chromosomes
- there is no genetic variation
- Prophase: chromosomesuper-coil, centrioles form spindle, nuclear envelope breaks
- Mutations
- A change in the base sequence which would bring about a change in the structure of DNA
- Cell Specialization
- Specialisation occurs as a result of differentiation
- Stem cells in mammels capable of differentiating into a number of different cell types
- Meristem in plants
- Animal Cells
- Erythrocytes
- No nucleus
- Biconcave to increase surface area
- very small
- Sperm Cells
- many mitochondria for ATP
- contain across which contains enzymes to digest egg wall
- microtubules use ATP to slide over each other, creating lashing movement in tail.
- Nuetrophils
- contain many lysosomes for digestion
- Can move and change shape in order to engulf bacteria
- Erythrocytes
- Specialisation occurs as a result of differentiation
- Meiosis
- Reduction Division
- M1: homologous pairs line up, wrap around each other and swap genetic information Crossing Over
- At end of M1, 2 cells with full numbers of chromosomes
- Second division results in 4 daughter products with half amounts of chromosones
- Meiosis
- Reduction Division
- M1: homologous pairs line up, wrap around each other and swap genetic information Crossing Over
- At end of M1, 2 cells with full numbers of chromosomes
- Second division results in 4 daughter products with half amounts of chromosones
- Second division results in 4 daughter products with half amounts of chromosones
- At end of M1, 2 cells with full numbers of chromosomes
- M1: homologous pairs line up, wrap around each other and swap genetic information Crossing Over
- Reduction Division
- Meiosis
- Second division results in 4 daughter products with half amounts of chromosones
- At end of M1, 2 cells with full numbers of chromosomes
- M1: homologous pairs line up, wrap around each other and swap genetic information Crossing Over
- Reduction Division
- Cell Cycle
- Second Growth Stage
- Mitosis
- Cytokinesis
- Cleavage of the Cytoplasm
- Nuclear Division
- Cytokinesis
- Replication of chromosomes
- Mitosis
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