4.2.3 Response to Exercise

• What is cellular respiration?

  Converts glucose into ATP
• Stages of cellular respiration in the correct order

  1️⃣ Glycolysis

  2️⃣ Krebs cycle (Citric Acid Cycle)

  3️⃣ Electron transport chain (ETC)
• What are the end products of anaerobic respiration?

  Lactic acid or ethanol
• During exercise, the respiration rate increases to supply more oxygen
• What is removed from the body during exercise to maintain respiration?

  Carbon dioxide
• Stages of cellular respiration in the correct order

  1️⃣ Glycolysis

  2️⃣ Krebs cycle (Citric Acid Cycle)

  3️⃣ Electron transport chain (ETC)
• Anaerobic respiration occurs in the mitochondria.

  False
• During exercise, the body's need for energy increases, leading to changes in respiration.


  True
• Steps to how oxygen consumption increases during exercise

  1️⃣ Increased respiration rate

  2️⃣ Increased heart rate
• One end product of anaerobic respiration in muscle cells is lactic acid
• Cellular respiration converts the chemical energy stored in glucose into ATP.

  True
• Arrange the stages of cellular respiration in the correct sequence:

  1️⃣ Glycolysis

  2️⃣ Krebs cycle

  3️⃣ Electron transport chain
• Lactic acid is an end product of anaerobic respiration in muscle cells.


  True
• ATP stores chemical energy for later use.

  True
• During exercise, the body increases its respiration rate to supply more oxygen and remove carbon dioxide.


  True
• Breathing depth increases during exercise to allow for more efficient gas exchange.

  True
• Increased heart rate during exercise ensures faster delivery of oxygenated blood to muscles.


  True
• Anaerobic respiration produces more ATP than aerobic respiration.

  False
• The ATP yield in anaerobic respiration is low
• When does anaerobic respiration occur in the body?

  Insufficient oxygen supply
• Order the processes involved in anaerobic respiration:

  1️⃣ Glycolysis

  2️⃣ Fermentation
• Anaerobic respiration uses oxygen to produce ATP.

  False
• Anaerobic respiration occurs in the cytoplasm of cells.
• ATP is the primary energy currency used by cells.
• During exercise, oxygen supply must increase through faster breathing and heart rate.
• During exercise, the demand for oxygen increases, which is met by faster breathing and heart
• Adaptations of the respiratory system during exercise

  1️⃣ Increased respiration rate

  2️⃣ Deeper and faster breaths

  3️⃣ Improved oxygen uptake by the lungs

  4️⃣ Quicker carbon dioxide removal
• During exercise, heart rate rises to pump oxygenated blood faster and deliver more oxygen to muscles
• Anaerobic respiration occurs when oxygen supply is insufficient
• What byproduct of anaerobic respiration causes muscle fatigue?

  Lactic acid
• Lactic acid accumulation during exercise can lead to muscle cramps.


  True
• Aerobic respiration yields a high number of ATP
• Glycogen stores are used to boost ATP production during exercise.


  True
• Anaerobic respiration does not require oxygen
• During exercise, breathing becomes deeper and faster
• The electron transport chain produces a large amount of ATP
• How many ATP molecules are produced per glucose molecule in aerobic respiration?

  Up to 38
• What happens to the respiration rate during exercise?

  Increases
• What are the two main factors that increase oxygen consumption during exercise?

  Respiration rate and heart rate
• What is the oxygen requirement in anaerobic respiration?

  Does not require oxygen