GCSE_Biology_Revision_Summary.pptx in introduction to cell

A slide show to make a summary on introduction to cell GCSE tutorials

1. GCSE Biology Revision Summary of Key Concepts

2. Levels of Organisation 1. Cells: Basic functional units of life. 2. Tissues: Groups of similar cells working together (e.g., muscle tissue). 3. Organs: Made of different tissues (e.g., the heart). 4. Organ Systems: Groups of organs working together (e.g., the circulatory system).

3. Cell Structure 1. Nucleus: Contains genetic material, controls cell activities. 2. Mitochondria: Site of respiration, energy release. 3. Cell Membrane: Controls the movement of substances in and out. 4. Cytoplasm: Where chemical reactions take place. 5. Plant Cells: Also contain chloroplasts, cell wall, and vacuole.

4. Biological Molecules 1. Carbohydrates: Provide energy, made of sugars (e.g., glucose). 2. Proteins: Made of amino acids, involved in growth and repair. 3. Lipids: Fats and oils, used for energy storage. 4. Enzymes: Biological catalysts that speed up reactions.

5. Movement of Substances 1. Diffusion: Movement of particles from high to low concentration. 2. Osmosis: Movement of water across a semi-permeable membrane from high to low water concentration. 3. Active Transport: Movement of particles against a concentration gradient, using energy.