biology b3 aqa gcse 4.0 / 5 based on 1 rating ? BiologyGCSEAQA Created by: susan slugCreated on: 07-05-13 20:35 what is diffusion? the net movement of particles from a high concentration to a low concentration 1 of 6 what is the role of the pulmonary vein? carry blood into heart from lungs 2 of 6 what is urea? the waste product formed from the breakdown of excess amino acids in the liver 3 of 6 what is urobilin? the yellow pigment that comes from the breakdown of haemoglobin in the liver 4 of 6 what is the role of the villi? increase surface area for the absorption of food 5 of 6 what is transpiration? loss of water vapour from stomata when open for gaseous exchnage 6 of 6
Comments
Report