Biology 0.0 / 5 ? BiologyMicrobes and diseaseGCSEAQA Created by: moryrillerCreated on: 30-10-15 12:10 What is your metabolic rate? The rate at which the chemical reactions take place in your cells 1 of 21 Rickets is the deficiency disease of what Vitamin? Vitamin D 2 of 21 Vitamin C is required for maintaining what? Healthy connective tissue and heals wounds 3 of 21 The body converts beta-carotene into what? Vitamin A 4 of 21 Fibre helps the intestine walls to... ... move food and faeces along the gut 5 of 21 What does Iron produce, which binds to oxygen in red blood cells, and what is its deficiency disease? Haemoglobin and anaemia 6 of 21 Name the two types of white blood cells and what they do. Phagocytes- ingest bacterium; Lymphocytes- produce antibodies and antitoxins. 7 of 21 What is the name of the process of ingesting bacterium? Phagocytosis 8 of 21 Microorganisms growing on the nutrient medium is called... ... a culture 9 of 21 What do pathogens contain that are the foreign chemicals to our cells? Antigens 10 of 21 What is used in a vaccine? A small, inactive does of a pathogen 11 of 21 What causes an antibiotic to become resistant? A mutation (through natural selection) and overuse of the antibiotic. 12 of 21 Penicillin was discovered by whom and in what year? Alexander Fleming, 1928 13 of 21 What did Ignaz Semmelweis discover? The importance of cleanliness when battling disease 14 of 21 Where is cholesterol produced and where is excess cholesterol taken? Liver- both 15 of 21 Which cholesterol is considered the 'good' cholesterol? High-density Lipoproteins 16 of 21 High levels of cholesterol in the blood increases the risk of... ... developing plaques in artery walls and heart disease 17 of 21 Receptors are a group of specialised cells that detect changes... ... in the environment, known as stimuli 18 of 21 A reflex action does not involve what? The brain 19 of 21 Electrical impulses travel over 3 different neurones. Name each and its order. Sensory Neurone -> Relay Neurone -> Motor Neurone 20 of 21 Describe what happens at the Synapse. One neurone arrives with the impulse. It diffuses the information over the synapse (tiny gap) and is picked up by the next neurone. 21 of 21
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