Biology 0.0 / 5 ? BiologyEnzymes and digestionGCSEAQA Created by: mollielonghurstCreated on: 08-05-15 11:02 Organ A group of tissues that perform a specific function 1 of 24 Organ system A group of organs working together to carry out a particular task 2 of 24 Allele A different type of a gene 3 of 24 Metabolic rate Rate of metabolism i.e. the amout of energy used over a certain period 4 of 24 Metabolism The chemical processes that occur within a living organism 5 of 24 Hormone A naturally occuring substance secreted by specialised cells 6 of 24 Photosynthesis carbon dioxide + water --> glucose + oxygen 7 of 24 Respiration glucose + oxygen --> carbon dioxide + water 8 of 24 Epidermal tissues Layers of cells covering the entire leaf preventing pathogens getting into the plant 9 of 24 Mesophyll Carries out photosynthesis 10 of 24 Xylem Transport water and minerals 11 of 24 Phloem Carries awat sugars made by the mesophyll. Transports substances to and from the leaf 12 of 24 Diffusion the net movement of particles from a high concentration area to a low concentration area 13 of 24 Osmosis The net movement of water particles from a high concentration area to a low concentration area 14 of 24 Active transport Particles move against the concentration gradient from a low concentration area to a high concentration area e.g. glucose 15 of 24 Root hair cell Has a large surface area to absorb water and minerals easily 16 of 24 Palisade Has many chloroplasts for photosynthesis 17 of 24 White blood cell Can change shape to engilf microbes 18 of 24 Sperm cell Has a tail to swim 19 of 24 Nerve cell Long nerve fibres to carry messages to other cells 20 of 24 Glucose Stored in the liver and the muscles 21 of 24 Glycogen Glucose is converted into glycogen which is stored 22 of 24 Glucagon Produces in the pancreas when blood glucose levels fall. Causes glycogen to be converted into glucose 23 of 24 Insulin Relased from the pancreas when blood glucose levels are too high. It converts glucose into glycogen 24 of 24
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