Revision 0.0 / 5 ? BiologyCells, tissues and organsEnzymes and digestionGCSEAQA Created by: WILLOW.EMILYCreated on: 15-03-21 16:49 Why is it beneficial for digestion that the stomach is low ph? Optimum ph for protease 1 of 24 What is the theory of enzymes called? Lock and key theory 2 of 24 Why does food need to be broken down? So it is small enough to be absorbed 3 of 24 Where is bile made? Liver 4 of 24 What is the test for sugars? Add Benedict’s Reagent, heat, turns from blue to brick red 5 of 24 What is the test for carbohydrates? Add iodine, turns form orange/brown to blue/black 6 of 24 What is the test for proteins? Add biuret reagent, turns purple 7 of 24 What is the test for lipids? *** Sudan III, red layer forms on top of liquid 8 of 24 Give one adaptation of an artery? Arteries have thick walls to carry high pressure blood from the heart 9 of 24 Give one adaptation of a vein? Veins have valves to prevent the back flow of blood 10 of 24 Give one adaptation of a capillary? Capillaries have one cell thick walls for exchange 11 of 24 What direction do arteries carry blood? Away form the heart 12 of 24 What direction do veins carry blood? Towards the heart 13 of 24 What are the top chambers of the heart called? Atrium 14 of 24 What are the bottom chambers of the heart called? Ventricles 15 of 24 Where does the vena cava carry blood to? Deoxygenated blood from the body to the right atrium 16 of 24 Where does the pulmonary artery carry blood to? Deoxygenated blood from the right ventricle to the lungs 17 of 24 Where does the pulmonary vein carry blood to Oxygenated blood form the lungs to the left atrium 18 of 24 Where does the aorta carry blood to? Oxygenated blood form the left ventricle to the body 19 of 24 Name the four components of blood Plasma, red blood cells, white blood cells platelets 20 of 24 Give the function of plasma Transports glucose, carbon dioxide, hormones and waste 21 of 24 Give the function of red blood cells Have haemoglobin to carry oxygen 22 of 24 Give the function of white blood cells Destroy pathogens by engulfing or making antibodies 23 of 24 Give the function of platelets Form clots to stop bleeding 24 of 24
Comments
No comments have yet been made