anam4iraaaab anam4iraaaab
  • 21-12-2016
  • Biology
contestada

Red blood cells have cell membranes that allow water, oxygen, carbon dioxide and glucose to pass through. all other materials are blocked form entering. this makes the membrane

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mountaaindew
mountaaindew mountaaindew
  • 21-12-2016
This makes the membrane semi-permeable.
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