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What is osmosis

Osmosis is the net movement of water down the water potential gradient, through a semi permeable membrane.
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Answered by Anna J. • Biology tutor
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How are red blood cells adapted for transport of oxygen?

Red blood cells are highly adapted to be efficient at absorbing and storing oxygen to carry around the body to be used for aerobic respiration . There are three main adaptations; Biconcave shape - this maxim...
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Answered by Amy C. • Biology tutor
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How can a child have cystic fibrosis when neither of the parents have the disorder? (5 Marks)

• Cystic fibrosis is an autosomal recessive disorder, which is caused by a mutation in the CFTR (cystic fibrosis transmembrane conductance regulator) gene. • The defective CFTR protein does not allow Cl- ion...
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Describe 2 ways the body prevents the entry of microorganisms.

• acid in stomach kills pathogens in food• skin forms a barrier / produces antimicrobial secretions• hairs in the nose trap (particles which may contain) pathogens• trachea / bronchi has mucus which traps pa...
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Answered by Fiona C. • Biology tutor
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Draw a labelled diagram of an animal cell and a plant cell. Give a function for each item named.

Draw diagram of animal cell.Draw diagram of plant cell. Nucleus - contains the genetic material necessary for replicationCytoplasm - the jelly like material containing the dissolved nutrients and organellesM...
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Answered by Hoonsoo J. • Biology tutor
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