BIOLOGY B2 0.0 / 5 ? ScienceBiologyGCSEAQA Created by: jademarie_Created on: 16-11-17 18:23 what is a tissue? a tissue is a group of similar cells that work together to carry out a function. 1 of 24 explain what is meant by the term 'organ system' group of organs working together to perform function. 2 of 24 what is the degestive system? is an organ system found in humans and other mammals 3 of 24 'THE ROLE OF ENZYMES AND FOOD TESTS JADE 4 of 24 why can enzymes only usually catalyse one reaction? enzymes are really picky 5 of 24 why can enzymes be described as catalysts? they speed up reactions inside living thingsby acting as catalysts 6 of 24 what does it mean when an enzyme has been'denatured' it means when the chnages in the shape of the enzyme's active site, so the substrate wont fit any more-the enzyme is denatured 7 of 24 list three places where amylase is made in the human body salivary gland, pancreas and small intestine 8 of 24 what is the role of lipases? made in the pancreas and small intestine. they work in the small intsestine 9 of 24 where is the bile stored? is produced in the liver. stored in the gall bladder before it is relased into the small intestine. bile is alkaine 10 of 24 name the solution that you would use to test for the presence of proteins in a food sample biuret solution 11 of 24 THE LUNGS AND CIRCULATORY SYSTEM JADE 12 of 24 where does gas exchange happen in the lungs? alveoli 13 of 24 name the four chambers of the heart pulmonary atery, vena cava, aorta, pulmonary vein 14 of 24 where the heart have valves? the vales in the heart stop the blood flowing backwards 15 of 24 DISEASES AND RISK FACTORS JADE 16 of 24 advantages of statins statins reduce the risk of strokes, coronary heart disease and heart attacks. help prevents some other dieases 17 of 24 disadvantages of statins statins can cause unwanted side effects: headaches 18 of 24 what is an non-communiable disease? diseases that cannot spread between people animals and people. 19 of 24 give an example of different types of disease interacting in the body pathogen, viruses, 20 of 24 which type of tumour is cancerous benign tumours are masses of abnormal cells. 21 of 24 PLANT CELL ORGANISATION AND TRANSPORT JADE 22 of 24 list the tissues that made up a leaf epidermal tissue, palisade mesophyll, spongy mesophyll, xylem and phloem, meristem 23 of 24 what is the function of phloem tubes? transport food 24 of 24
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