AQA GCSE Additional Biology - Life and cells.

Includes plant and animal cell similarities and differences, as well as how cells can form into an organism.

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  • Created on: 30-09-09 20:11
Preview of AQA GCSE Additional Biology - Life and cells.

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GCSE AQA Biology
Life and cells
In biology cells are a need-to know topic.
Plants and animal cells have similarities and differences, they both have these:
1) Nucleus-The nucleus has genetic material which control
the activities of the cell.Cytoplasm-The cytoplasm is a
gel-like substance which contains enzymes; the enzymes
cause chemical reactions.
2) Cell membrane-The cell membrane holds the cell
together and controls what is able and unable to go in
and out of the cell.
3) Mitochondria-The mitochondria are where the most
respiration reactions occur. Respiration releases the
energy that cells need to work.
4) Ribosomes-The ribosomes are where proteins are made.
plant cells have these as well though:
1)Cell wall-The cell wall is made of cellulose, it supports
and strengthens it.
2)Permanent vacuole-The vacuole contains cell sap, which is
a weak solution of sugar and salts.

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Chloroplasts- Chloroplasts contain chlorophyll which helps
photosynthesis. Photosynthesis is needed to make food for the plant.
Cells have structures that make them specialised to complete their function.
Similar cells group together to make a tissue. Tissues formed together create an
organ, and organs together create an organism, like you and me.…read more


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