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6. Explain why yeast is used in bread production?

  • The aerobic respiration enables the bread to rise because of Carbon dioxide
  • The Anearboic respiration causes the bread to rise because of gases produced
  • It makes it taste good when it breaks down the starch

7. What is the point of a water cooling jacket in a fermenter?

  • Because it needs to be very cold
  • It creates insulation and prevents it over heating (this stops enzymes dentauring and the yeild being affected)
  • A water cooling jacket makes the fermenter look more attractive

8. Who discovered Penicillin?

  • Alexander Flemming
  • Louis Pastuer
  • Louis Flemming

9. What is malting in beer production?

  • Keeping the grains warm with water
  • Keeping the grains cool with water
  • Add volime to the grains with water

10. What is the main gas composed in Biogas?

  • Methane
  • Oxygen fed into the chamber
  • Carbon dioxide