Notes of Chapter- Life Processes ( Nutrition) KEY CONCEPTS & GIST v Life processes – The processes that are necessary for an organism to stay alive. Eg. Nutrition, respiration,circulation, excretion etc. v Criteria of life - (i) Movement ii) Growth iii) Life Processes. v Nutrition - The process in which an organism takes in food, utilizes it to get energy and nutrients for growth, repair and maintenance, etc. v Types of nutrition 1. ...
v Respiration - The process by which digested food is broken down with the help of Oxygen to release energy. Types of respiration - (i) Aerobic respiration (ii) Anaerobic respiration Aerobic respiration Anaerobic respiration 1. Takes place in presence of Oxygen. 2. End products- Carbon dioxide & Water 3. More energy is released. 4. Takes place in Cytoplasm & Mitochondria 5. Complete oxidation of glucose takes place. 6. It occurs in most organisms. 7. Equation- Glucose→ Pyruvate→ CO 2 + H 2 O + Energy 1. Takes place in absence of Oxygen. 2. End products- Ethanol & Carbon dioxide or Lactic Acid. 3. Less energy is released. 4. Takes place only in Cytopl...
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