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Life processes (Variety of living organisms (Animals (The carbohydrate…
Life processes
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Cell structures
Unspecialised cells
Animal cell
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it contains:
- nucleus
- cell membrane
- mitochondria
- cytoplazm
Plant cell
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It contains:
- cell wall
- cell membrane
- permanent vacuole
- cytoplasm
- mitochondria
- chloroplasts
- nucleus
Processes
Enzymes
Enzymes are biological catalysts, that control all the reactions in a cell. A catalyst speeds up a reaction without being used up or changing the reaction.
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Movement through cells
Diffusion
The overall movement of particles from an area of low concentration to an area of high concentration. Diffusion is passive so does not require energy.
Osmosis
A special type of diffusion where only water moves across a partially permeable membrane from an area of high concentration to an area of lower concentration. Down the concentration gradient.
Specialised cells
Specialised cells are cells that are specialized or a particular function in the body. Specialised cells group together to form a tissue. e.g muscle cells group together to form muscle tissue. different tissues work together to form an organ.
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