2.7.2 Fermentation

• What are the products of alcohol fermentation?

  Alcohol, Carbon Dioxide
• What are the two main types of fermentation?

  Alcohol and Lactic Acid
• Order the steps involved in alcohol fermentation.

  1️⃣ Yeast breaks down sugars

  2️⃣ Alcohol is produced

  3️⃣ Carbon dioxide is released
• Bacteria in lactic acid fermentation produce lactic acid.
• Match the microorganism with its fermentation type and product.

  Bacteria ↔️ Lactic Acid Fermentation, Lactic Acid

  Yeast ↔️ Alcohol Fermentation, Alcohol and CO₂
• Why do anaerobic processes like fermentation yield less energy than aerobic respiration?

  No oxygen is used
• Which process yields more energy: fermentation or aerobic respiration?

  Aerobic respiration
• Lactic acid fermentation produces alcohol as a byproduct

  False
• Match the microorganism with its fermentation type and products:

  Bacteria (e.g., *Lactobacillus*) ↔️ Lactic Acid Fermentation, Lactic Acid

  Yeast (e.g., *Saccharomyces cerevisiae*) ↔️ Alcohol Fermentation, Alcohol and Carbon Dioxide
• In yogurt production, bacteria ferment lactose into lactic acid
• What are the two main products of alcohol fermentation?

  Alcohol, Carbon Dioxide
• What is the role of yeast in alcohol fermentation?

  Breaks down sugars
• Fermentation is a type of anaerobic respiration
• Lactic acid fermentation produces only lactic acid.
• Yeast is used in alcohol fermentation to produce alcohol and carbon dioxide.
• Match the type of fermentation with its organism and products.

  Alcohol Fermentation ↔️ Yeast, Alcohol and CO₂

  Lactic Acid Fermentation ↔️ Bacteria, Lactic Acid
• Both alcohol and lactic acid fermentation are anaerobic processes.

  True
• In alcohol fermentation, yeast breaks down sugars to produce alcohol and carbon dioxide.
• In alcohol fermentation, yeast produces alcohol and carbon dioxide.
• The two main types of fermentation are alcohol fermentation and lactic acid fermentation
• What are the end products of alcohol fermentation?

  Alcohol, Carbon Dioxide
• In which type of fermentation is *Lactobacillus* used?

  Lactic Acid Fermentation
• Yeast is used in beer and wine production to create alcohol and carbon dioxide


  True
• Which microorganism is responsible for producing lactic acid during fermentation?

  *Lactobacillus*
• Fermentation occurs without oxygen.


  True
• Fermentation yields less energy than aerobic respiration.


  True
• Which type of microorganism is used in lactic acid fermentation?

  Bacteria
• What is the role of yeast in alcohol fermentation?

  Breaks down sugars
• Which specific yeast is commonly used in alcohol fermentation?

  Saccharomyces cerevisiae
• Lactic acid fermentation is used in the production of yogurt.


  True
• Match the type of fermentation with its organism and products.

  Alcohol Fermentation ↔️ Yeast, Alcohol and CO₂

  Lactic Acid Fermentation ↔️ Bacteria, Lactic Acid
• What microorganism is primarily involved in alcohol fermentation?

  Yeast
• The primary product of lactic acid fermentation is lactic acid
• What is the key product of fermentation in bread making?

  Carbon Dioxide
• What microorganism is used in yogurt production?

  *Lactobacillus*
• Both alcohol fermentation and lactic acid fermentation are anaerobic processes


  True