Biology Unit 1 (Set 2) 0.0 / 5 ? BiologyASAQA Created by: Laura GilbertCreated on: 21-03-13 23:16 Which microorganisms cause disease? Pathogens 1 of 30 Muscles in the stomach and what else helps with the physical breakdown of food? Teeth 2 of 30 All digestive enzymes function by what? Hydrolysis 3 of 30 What tube carries food from the mouth to the stomach? Oesophagus 4 of 30 What colour will Benedict's reagent turn if reducing sugars are present? Orange 5 of 30 What bond holds monosaccharides together? Glycosidic 6 of 30 Give an example of a fibrous protein Collagen 7 of 30 Which test is used to test for proteins Biuret 8 of 30 The minimum amount of energy needed to activate a reaction is called the Activation energy 9 of 30 What molecule does the enzyme act on? Substrate 10 of 30 Above 50 degrees most enzymes become... Denatured 11 of 30 Buffering a solution maintains a constant... pH 12 of 30 What organelle carries out respiration? Mitochondria 13 of 30 The main role of lipids is in what? Plasma membranes 14 of 30 Phospholipids form what kind of layer? Bilayer 15 of 30 Rate of diffusion depends on surface area, diffusion distance and what else? Concentration 16 of 30 Does water move up or down a water potential gradient? Down 17 of 30 For osmosis to occur the membrane must be partially what? Permeable 18 of 30 Where are villi situated? Lumen 19 of 30 Diarrhoea and dehydration are symptoms of what? Cholera 20 of 30 Cholera is treated by what? Oral rehydration therapy 21 of 30 The trachea is a flexible airway supported by rings of what? Cartilage 22 of 30 Internal intercostal muscles contraction leads to... Expiration 23 of 30 Fibrosis, asthma and emphysema are all what kind of diseases? Lung 24 of 30 Which side of the heart is bigger? Left 25 of 30 What provides a protective covering from pathogens? Skin 26 of 30 What engulf a pathogens? Phagocytes 27 of 30 Plasma cells secrete what? Antibodies 28 of 30 There are two types of immunity passive and... Active 29 of 30 Which has a lower resolving power the transmission or scanning microscope? Scanning 30 of 30
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