BY1 WJEC Cell structure and organisation 4.5 / 5 based on 3 ratings ? BiologyCellular processes and structureASWJEC Created by: rosie25Created on: 23-03-14 20:42 Nucleus function To control cell activities and retain the chromosomes 1 of 19 Nucleus structure Bound by nuclear membrane (pores for passage), has a nucleoplasm (contains chromatin) and a nucleolus (manufactures RNA, makes ribosomes) 2 of 19 Mitochondria function Site of aerobic respiration. Produces energy-carrier molecule ATP 3 of 19 Mitochondria structure double membrane- separated by fluid filled inter-membrane space. Folded to form extensions called cristae 4 of 19 endoplasmic reticulum structure Parallel double membrane forming flattened sacs. Fluid-filled spaces called cistern. Connected with nucleus 5 of 19 Endoplasmic reticulum function Transport throughout cell. ROUGH- transporting proteins made by ribosomes. SMOOTH- synthesis and transport of lipids 6 of 19 Ribosome function Important in protein synthesis 7 of 19 Ribosome structure Manufactured in nucleolus from ribosomal RNA and protein 8 of 19 Golgi body function Proteins transported in vesicles and modified & packaged in golgi body. Also produce secretory enzymes and secreting carbohydrates 9 of 19 Golgi body structure Rough ER pinched off at the ends 10 of 19 Lysosome function Contain and isolate potentially harmful enzymes. Also destroy worn out organelles in cell and digest material that has been taken into cell 11 of 19 Lysosome structure Small vacuoles formed when portions of golgi body are pinched off. 12 of 19 Centriole function During cell function they divide and move to opposite poles where they synthesise the microtubules of the spindle 13 of 19 Centriole structure Located outside nucleus in region known as the centrosome 14 of 19 Chloroplast function Contains chlorophyll used in photosynthesis 15 of 19 Chloroplast structure Double plasma membrane, stroma fluid-filled and contains ribosomes, lipids, DNA. 16 of 19 Vacuole function Storage site for chemicals e.g. glucose 17 of 19 Vacuole structure Fluid-filled sac bounded by a membrane-tonoplast. 18 of 19 Order of level of organisation Tissues, organs, systems, organisms 19 of 19
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