Cells

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  • Created by: Jamie Lee
  • Created on: 29-03-13 18:11

Cells

All living things are made of cells.

Animal cells have lots of parts. Plant cells have all of these parts, plus a few extra that animal cells do not have.

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Parts of an Animal Cell

  • Nucleus - Contains genetic material that controls the activities of the cell.
  • Mitochondria - These are where most of the reactions for respiration take place. Respiration releases energy that cells need to work.
  • Cytoplasm - Gel-like substance where most of the chemical reactions happen. It contains enzymes that control the reactions.
  • Ribosomes - There are where proteins are made in the cell.
  • Cell Membrane - Holds the cell together and controls what goes in or out.
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Parts of a Plant Cell

A plant cell features all of the parts found in an animal cell as well as:

  • Chloroplasts - These are where photosynthesis occurs, which makes food for the plant. They contain a green substance called chlorophyll.
  • Rigid Cell Wall - Made of cellulose. It supports the cell and strengthens it.
  • Permanent Vacuole - Contains cell sap, a week solution of sugar and salts.
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Yeast

Yeast is a microorganism. A yeast cell has a nucleus, cytoplasm, and a cell membrane surrounded by a cell wall.

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Bacteria

Bacteria are also single-celled microorganisms. A bacteria cell has a cytoplasm and a cell membrane surrounded by a cell wall. The genetic material floats in the cytoplasm because bacterial cells don't have a nucleus.

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