1) The organ where gas exchange happens. a) Heart b) Lung c) Liver d) Kidney 2) The air sac where gas exchange happens a) Capillary b) Artery c) Vein d) Alveoli 3) The process where gases move in and out of the blood. a) Diffusion b) Osmosis c) Active Transport d) Transpiration 4) The gas which moves into the blood a) Carbon Dioxide b) Nitrogen c) Oxygen d) Helium 5) The gas that moves out of the blood. a) Carbon dioxide b) Nitrogen c) Oxygen d) Helium 6) The chemical that carries the oxygen a) Haemoglobin b) Chlorophyll c) Carotene d) Vitamin C 7) The cells that carry oxygen a) White blood cells b) Neurons c) Red blood cells d) Root hair cells 8) The muscles that move the ribs to breathe a) Bicep b) Tricep c) Gluteus maximum d) Intercostal 9) The muscle below the lungs that moves up and down breathe. a) Bicep b) Tricep c) Intercostal d) Diaphragm 10) Alveoli are efficient because they have a a) Large surface area b) Pulse rate c) Stroke volume d) Amplitude

Gas exchange

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