EDEXCEL GCSE BIOLOGY 3 0.0 / 5 ? ScienceBiologyGCSEEdexcel Created by: MeenaCreated on: 18-05-13 19:10 circadian rhythms a daily rhythm 1 of 21 hormones chemical messengers 2 of 21 photoperiodism the way in which living organisms respond to changes in daylength 3 of 21 germinate a process in which a seed begins to grow into a young plant 4 of 21 pathogens an organism that causes a disease 5 of 21 pasteurisation when foods such as milk are heated briefly to kill bacteria in them. 6 of 21 aseptic techniques any method to ensure that living microorganism do not come in contact with something 7 of 21 antigens a protein that white blood cells recognise as foreign, EG: on the surface of a bacterium 8 of 21 antibodies a protein produced by lymphocytes. it attaches to a specific antigen on as microorganism and helps to destroy or neutralise it. 9 of 21 lymphocytes a type of white blood cell that produces antibodies 10 of 21 memory lymphocytes a lymphocyte that remains in the blood for a long time after an infection or vaccination 11 of 21 urea a waste product produced in the liver from exess amino acids 12 of 21 renal artery a artery that DELIVERS blood to the KIDNEYS 13 of 21 renal veins a vein that carries blood AWAY from the KIDNEYS 14 of 21 dialysis process used to clean blood of people with kidney failure, using membranes to filter out waster products 15 of 21 nephrons a kidney tubule 16 of 21 glomerulus a network of blood capillaries in a kidney 17 of 21 oestrogen A hormone produced by the ovaries, important in the menstrual cycle 18 of 21 progesterone Its a hormone produced by the ovaries and placenta, it helps to maintain the thick lining of the uterus 19 of 21 gametes They are sex cells and highly specialised for their functions 20 of 21 alleles different forms of the same gene 21 of 21
EDEXCEL GCSE 9-1 COMBINED SCIENCE FOUNDATION PAPER 2 BIOLOGY 2 QUESTION PAPER SAMPLE ASSESSMENT PAPER 0.0 / 5
EDEXCEL GCSE 9-1 COMBINED SCIENCE HIGHER SAMPLE ASSESSMENT MATERIAL PAPER 1 BIOLOGY 1 MARK SCHEME 0.0 / 5
EDEXCEL GCSE 9-1 COMBINED SCIENCE HIGHER SAMPLE ASSESSMENT MATERIAL PAPER 1 BIOLOGY 1 QUESTION PAPER 0.0 / 5
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