Biology B3 - Molecules of life

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In 1953 James Watson, and Farncis Crick introduced DNA into the world.

Mitochondria is were respiration takes place in the cell. In muscle and liver cells a lot of mitochondria is needed because they require a lot of energy.

Genetic code controls cell activity and consequently some characteristics of the organism.

Chromosomes are made from DNA. Genes are short sections of DNA. Each gene is a set of coded instructions for making a particular protein.


The cell's …


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