4.2.2 Anaerobic Respiration

• Anaerobic respiration requires oxygen.

  False
• What are the key differences between anaerobic and aerobic respiration?

  Oxygen, energy, products
• Anaerobic respiration produces 36-38 ATP.

  False
• The main product of anaerobic respiration in animals is lactic acid.
• Match the type of respiration with its oxygen requirement:

  Anaerobic Respiration ↔️ No oxygen required

  Aerobic Respiration ↔️ Oxygen required
• Ethanol is produced in animal anaerobic respiration.

  False
• What is produced in muscles during anaerobic respiration?

  Lactic acid
• The buildup of lactic acid in muscles can lead to fatigue and soreness.
• Anaerobic respiration requires oxygen

  False
• The main product of anaerobic respiration in muscles is lactic acid
• Anaerobic respiration yields significantly less energy than aerobic
• Which enzyme converts pyruvic acid to lactic acid in animal muscles?

  Lactate dehydrogenase
• Match the fermentation type with its enzyme and end product:

  Lactic Acid ↔️ Lactate dehydrogenase ||| Lactic acid

  Ethanol ↔️ Pyruvate decarboxylase and alcohol dehydrogenase ||| Ethanol + CO2
• What is the energy yield of anaerobic respiration?

  2 ATP
• Anaerobic respiration is more efficient than aerobic respiration.

  False
• The main product of anaerobic respiration in animals is lactic acid
• What is the primary product of anaerobic respiration in muscles?

  Lactic acid
• Pyruvic acid is formed during glycolysis.

  True
• In yeast, pyruvic acid is converted to ethanol and carbon dioxide
• Match the fermentation type with its end products:

  Lactic Acid ↔️ Lactic acid

  Alcoholic ↔️ Ethanol + CO2
• Lactic acid fermentation yields 2 ATP molecules.


  True
• Alcoholic fermentation occurs in yeast and some microorganisms.


  True
• Steps of alcoholic fermentation:

  1️⃣ Pyruvic acid is decarboxylated by pyruvate decarboxylase

  2️⃣ Acetaldehyde is produced

  3️⃣ Acetaldehyde is reduced to ethanol by alcohol dehydrogenase
• The main end products of anaerobic respiration are lactic acid and ethanol
• Anaerobic respiration is a metabolic process that produces energy without the use of oxygen
• Aerobic respiration requires oxygen to produce energy.


  True
• What are the end products of aerobic respiration?

  Carbon dioxide and water
• Anaerobic respiration does not require oxygen
• What are the products of anaerobic respiration in animal muscles?

  Lactic acid
• Steps of anaerobic respiration in muscles during oxygen limitation:

  1️⃣ Glucose is converted to pyruvic acid

  2️⃣ Pyruvic acid is transformed into lactic acid

  3️⃣ 2 ATP molecules are produced
• What are the products of aerobic respiration in muscles?

  Carbon dioxide and water
• What are the products of pyruvic acid conversion in yeast and some microorganisms during anaerobic respiration?

  Ethanol and carbon dioxide
• In which organisms does alcoholic fermentation occur?

  Yeast and microorganisms
• Both lactic acid and alcoholic fermentation produce 2 ATP molecules.

  True
• Anaerobic respiration generates significantly more ATP than aerobic respiration.

  False
• How does the energy yield of anaerobic respiration compare to that of aerobic respiration?

  Lower energy yield
• What is anaerobic respiration?

  Energy production without oxygen
• Anaerobic respiration is a metabolic process that produces energy without the use of oxygen
• Anaerobic respiration does not require oxygen
• What are the products of anaerobic respiration in animals?

  Lactic acid