OCR gateway science - b3

biology - living and growing

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  • Created by: lucy
  • Created on: 18-05-11 13:13

Cells and DNA

Plants and animals have similarities and differences.

  • energy for life processes is provided by respiration
  • most of these reactions involved take place in mitochondria
  • mitochondria are organelles surrounded by two membranes
  • they break down food molecules to make ATP
  • they provide the energy a cell need to move,divide,and produce secretory products and contract
  • the mitochondria are located in the cytoplasm of a cell
  • an organelle is a small structure within a cell


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dna is found in the nucleus of every cell

it is a double stranded helix, each of the two strands is made up of lots of small groups of nucleotides

each nucleotides

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