1. Cells
Animal & Plant

2. Cells A cell must: Breathe Nourish itself Repair itself Reproduce
Eliminate waste

3. Cells
The internal structures of a cell are called organelles

4. Organelles of a plant cell (p.278)
Main parts
Cell membrane: (protects cell)
Cytoplasm: (allow flows, keeps organelles in place)
Nucleus: (centre of cell, contains chromosomes)
Vacuole: (stores nutrients & waste)
Endoplasmic reticulum: (cellular transportation)
Mitochondrion: (produces energy, cell respiration)
Cell wall: (support for cell)
Chloroplast: (for photosynthesis, absorbs sunlight)

5. Organelles of an animal cell
Main parts
Cell membrane
Cytoplasm
Nucleus
Vacuole
Endoplasmic reticulum
Mitochondrion

6. How cells work Inputs : the things that enter the cell to make it work
(i.e. Water, nutrients, oxygen)
Outputs: Once the cell has used up its inputs it must remove the waste (outputs)

7. Exchange between cells and their environment
The cell membrane makes sure only the correct inputs enter the cell
The substances that enter the cell move in and out via diffusion

8. Diffusion
Diffusion is when particles swift from a region where they are very concentrated to a region where they are less concentrated

9. Osmosis Water enters the cell via osmosis
The passage of water across a membrane that only allows certain substance to pass
Basically it prevents high concentration of solutes to enter the cell

10. The vital functions of the cell
Plant cells
Photosynthesis :
Take in carbon dioxide, water,
solar energy (inputs)
Let out oxygen and
carbohydrates (outputs)
Animal cells:
Cellular respiration:
oxygen, carbs (inputs)
carbon dioxide, water, energy (outputs)

11. IN CLASS WORK
P. 289
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