Notes from AQA Book:
Most cells have:
- a Nucleus to control the cell's activities.
- Cytoplasm where many chemical reactions take place.
- a Cell Membrane that controls the movement of materials in and out of the cell.
- Mitochondria where energy is released during aerobic respiration.
- Ribosomes where protein synthesis takes place.
Plant and algal cells have all the ones above but they also have:
- a rigid Cell Wall made of cellulose for support.
- Chloroplasts that contain chlorophyll for photosynthesis; the chloroplasts absorb light energy to make food.
- a Permanent Vacuole containing cell sap.
Algae are simple aquatic organisms which have many features similar to plant cells.
- Most human cells, like most animall cells, contain a nucleus, cytoplasm, cell membrane, mitochondria and ribosomes.
- Plant and algal cells contain everything in an animal cell, plus many also contain chloroplasts and a permanent vacuole filled with sap.
- Plant cells are different from animal cells because they…