CELL BIOLOGY - I scored a Level 7 on my final exam using these notes.
Introduction to cells
- Ultrastructure of cells
- Membrane structure
- Membrane transport
- The origin of cells
- Cell division
Summary document of Chapter 5 Evolution and biodiversity IB Biology
Tema 3: Metabolismo
IB Biology Full Course Notes + Required Drawings Units 1 - 11 & Option D
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CELL DIVISION
Mitosis
Division of the nucleus into two genetically identical daughter cells
Stages in Mitosis: Pass Me A Taco
Prophase Metaphase Anaphase Telophase
Prophase
- Chromosomes become condensed (fatter and shorter) via supercoiling
- Nucleolus breaks down
- Centrosomes move to opposite poles
- Microtubules form from centrosomes
o Microtubules = spindle fibres
- Nuclear membrane/envelope breaks down and nucleus dissolves
Metaphase
- Microtubules continue to grow and attach to centromeres
o Centromere: centre point of a chromosome
- Microtubules depolymerisation causes contract in length
- Chromosomes align at centre of cell (equatorial plane)
Anaphase
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