Respiration

• Respiration


  A series of enzyme controlled reactions resulting in the production of ATP from the chemical energy in glucose.
• Why do cells need energy?

  —cell division

  —cell growth

  —uptake of chemicals

  —building up large molecules

  —muscular contractions
• Give three examples of why cells need energy

  — Cell division

  
  

  — Cell growth

  
  

  — Muscular contractions
• Respiration


  Respiration is the process of releasing energy by the use of enzymes from food
• Why is respiration affected by temperature?

  Because it is controlled by enzymes.
• Properties of Cell membrane

  Selectively permeable

  Made up of phospholipids

  Two Bilayers of phospholipids
• What is diffusion

  Movement of molecules from a HIGH concentrations to a LOW concentration.
• Does diffusion require energy?

  No, it is a PASSIVE process.
• What is Active Transport?

  Movement of molecules from a LOW conc to a HIGH conc
• Does Active Transport require energy?

  Yes, it is an active process.
• Molecules move against the grain of the concentration gradient during ACTIVE TRANSPORT
• Where does the first stage of aerobic respiration take place?

  Cytoplasm
• Describe the 1st stage of aerobic respiration

  Takes place in the cytoplasm where one glucose molecule is broken down into two pyruvate molecules. This releases 2 ATP.