B3 definitions 0.0 / 5 ? BiologyGCSEAQA Created by: grace ramsayCreated on: 11-05-13 15:15 osmosis the movement of water from a high water potential to a low water potential through a partially permeable membrane 1 of 39 active transport the movement of substances against the concentration gradient using energy from respiration 2 of 39 negative pressure a system when the external pressure is lower than the internal pressure 3 of 39 positive pressure a system when the external pressure is higher than the internal pressure 4 of 39 waxy cuticle stops water loss 5 of 39 guard cells control the opening and closing of the stomata 6 of 39 stomata allow gases to enter and leave the leaf 7 of 39 transpiration the loss of water vapour from the leaves of plants through the stomata 8 of 39 potometer shows the water uptake of a plant 9 of 39 pulmonary artery takes deoxygenated blood to the lungs 10 of 39 vena cava brings deoxygenated blood to the heart 11 of 39 right atrium receives deoxygenated blood from the body 12 of 39 right ventricle pumps deoxygenated blood to the lungs 13 of 39 aorta carries oxygenated blood around the body 14 of 39 pulmonary vein brings oxygenated blood from the lungs 15 of 39 left atrium receives oxygenated blood from the lungs 16 of 39 left ventricle pumps oxygenated blood to the body 17 of 39 coronary arteries ensure the heart muscles have a good blood supply 18 of 39 arteries carry blood away from the heart 19 of 39 veins carry blood to the heart 20 of 39 stent holds fatty deposits back holding arteries open 21 of 39 plasma carries red blood cells, white blood cells and platelets 22 of 39 haemoglobin red pigment which carries oxygen around the body 23 of 39 white blood cells forms part of the body's defence system 24 of 39 platelets aid blood clotting 25 of 39 red blood cells carries oxygen 26 of 39 eutrophication the process by which water can no longer support animal life 27 of 39 mycoprotein food based on fungus 28 of 39 biogas a mixture of flammable gases, mostly methane, produced by the fermentation of biological materials 29 of 39 distillation a process which separates the components of a mixture on the basis of their different boiling points 30 of 39 urea the waste product formed by the breakdown of excess amino acids in the liver 31 of 39 urobilins yellow pigments found in the urine that come from the breakdown of haemoglobin 32 of 39 thermoregulatory system a part of the brain that is sensitive to the body's temperature 33 of 39 immunosuppresant drugs drugs which suppress the immune system to prevent the rejection of transplanted organs 34 of 39 xenotransplantation transplanting tissues and organs from one species to another 35 of 39 insulin converts glucose to glycogen 36 of 39 glucagon converts glycogen to glucose 37 of 39 dialysis the process of cleansing the blood when the kidneys have failed 38 of 39 diabetes a condition where it becomes difficult/impossible for your body to control the levels of sugar 39 of 39
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