Cellular respiration 🫁

• What is respiration?


  It is a chemical reaction that releases energy through breakdown of glucose.
• Is respiration an exothermic or endothermic process?

  Exothermic.
• What are the two types of respiration?

  Aerobic respiration and anaerobic respiration.
• What does aerobic respiration do?

  It is the complete breakdown of glucose and transfers large amounts of energy. It usually occurs during steady exercise as it slowly and steadily releases energy.
• Where does aerobic respiration take place?

  In the mitochondria.
• What is the equation for aerobic respiration?

  glucose + oxygen -------> carbon dioxide + water + energy.
• What does anaerobic respiration do?


  It transfers little energy in short bursts and is the incomplete breakdown of glucose as it occurs during vigorous exercise. It produces lactic acid.
• Where does anaerobic respiration take place? 


  It occurs in the cytoplasm of muscle cells in animals.
• Which type of respiration requires oxygen?

  Aerobic.
• Which type of respiration doesn't require oxygen?

  Anaerobic.
• What is the equation for anaerobic respiration in animals?

  Glucose -------> lactic acid + little energy.
• What is the equation for anaerobic respiration in plants?

  Glucose -------> Ethanol + Carbon Dioxide + Energy.

  Example: yeast does this during fermentation.
• What are the energy uses of respiration?

  -muscle contraction: to allow movement, in animals to allow muscles to contract.

  -passage of impulses: to pass electrical messages around the body.

  -cell division: to help cells divide and organisms grow.

  -active transport: move molecules against concentration gradient.

  -protein synthesis: to make proteins.

  -chemical reactions: to make larger molecules from smaller molecules.

  -homeostasis: to maintain a stable/constant internal body temperature.