Respiration

• Cellular respiration is an exothermic reaction Exothermic reactions - Chemical reaction that release energy are called exothermic
• Whats the difference between anaerobic respiration and aerobic respiration? Aerobic respiration takes place in the prescence of oxygen and Anaerobic respiration takes place in the absence of oxygen.
• What do organisms need energy for? 3 points To build larger molecules out of smaller ones. eg. amino acidsMuscle contraction (movement)To keep warm
• What is the symbol and word equation for Aerobic respiration? glucose + oxygen carbon dioxide + waterC 6H 12O 6 + 6O 2 → 6CO 2 + 6H 2O
• Whats the word equation for Anaerobic respiration in muscles? Glucose -> Lactic Acid
• As the breaking down of glucose is incomplete in Anaerobic resipiration, much less energy is transferred than in Aerobic respiration
• What is the word equation for Anaerobic respiration in plant and yeast cells? glucose -> ethanol + carbon dioxide
• "Anaerobic respiration in yeast cells is called fermentation and has
• economic importance in the manufacture of bread and alcoholic drinks"
• If insuffiecient oxygen is supplied anaerobic respiration takes place in the muscles. The incomplete oxidation of glucose causes a build up of lactic acid and creates an oxygen debt.
• Blood flowing through the muscles transports the lactic acid to the liver where it is converted back into glucose.