Biology- Breathing 0.0 / 5 ? BiologyRespiration and exerciseIGCSEAQA Created by: Splash HeslinCreated on: 07-04-15 12:34 What do ventilators do? Help people breathe- disease/ injury 1 of 10 Negative pressure Causes air to be drawn in lungs and to be exhaled; air pumped into chamber causes vacuum. 2 of 10 Positive pressure Forces air into lungs, pressure stops once inflated- lungs deflate; face mask or tube. 3 of 10 Energy is used for... ... growth/ repair, active transport, electrical pulses to nerves, heat generation, making proteins, moving. 4 of 10 Aerobic respiration (equation) In the presence of oxygen! glucose+ oxygen-> carbon dioxide+ water (+energy) 5 of 10 Anaerobic respiration (equation) In the absence of oxygen!! glucose-> lactic acid (+ energy) 6 of 10 Lactic acid causes... fatigue. 7 of 10 How to get rid of lactic acid... Oxygen debt- oxygen breaks down lactic acid (produces carbon dioxide and water) 8 of 10 Anaerobic in yeast (equation) glucose-> ethanol+ carbon dioxide (+ energy) 9 of 10 Mitochondria Most respiration reactions happen here; inner surface is folded to increase surface area. 10 of 10
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