respiration

• What does respiration do?

  Releases energy from food
• What is some energy lost as?

  Heat energy
• What occurs without oxygen?

  Fermentation
• What measures oxygen used in aerobic respiration?

  Respirometer
• What can ATP be used for?

  Active transport

  DNA replication

  Muscle contraction
• Describe 2nd stage of aerobic respiration

  Pyruvate is broken down to carbon dioxide and water

  36 ATP produced

  Occurs in mitochondria

  Oxygen required
• What can glucose be used for?

  Respiration

  Converted to starch for storage

  Converted to cellulose for cell walls
• Describe carbon fixation

  Carbon dioxide enters by diffusion

  Hydrogen combines with CO2 using energy from ATP

  Glucose is produced
• How do we make results more reliable?

  Repeat and take an average
• Why in the potato experiment must we dry the extra water off?

  If not dried the experiment is not valid as excess water is included in the final mass
• Describe glycolysis

  Glucose is the raw material and is broken down into 2 Pyruvate

  2 ATP produced

  Occurs in cytoplasm

  Oxygen is not required
• We repeat and take an average when we want to make results more reliable.
• What can ATP be used for?

  Active transport

  DNA replication

  Muscle contraction
• What occurs without oxygen?

  Fermentation
• how much ATP is made overall from aerobic respiration?

  38
• how much ATP is made overall from fermentation?

  2 (from glycolysis)
• Where is aerobic respiration completed?

  in the mitochondria
• is aerobic respiration affected by temperature?

  yes