What is the primary fuel for the lactic acid system?

• Amino acids
• Proteins
• Glucose
• Fatty acids

What process breaks down glucose in the lactic acid system?

• Glycolysis
• Glycogenesis
• Krebs cycle
• Oxidative phosphorylation

How many ATP molecules are produced from one molecule of glucose in the lactic acid system?

• 3 ATP
• 1 ATP
• 2 ATP
• 4 ATP

What does pyruvic acid convert to in the absence of oxygen?

• Acetic acid
• Lactic acid
• Citric acid
• Carbonic acid

What is a key disadvantage of the lactic acid system?

• High energy yield
• Rapid energy production
• Pain and fatigue
• Requires oxygen

What is the maximum duration the lactic acid system can effectively provide energy?

• 4 minutes
• 2 minutes
• 1 minute
• 3 minutes

What is one advantage of the lactic acid system?

• Slow energy production
• Requires oxygen
• Quick energy production
• High energy yield

What happens to performance when lactic acid builds up in the muscles?

• Performance improves
• Performance remains the same
• Performance declines
• Performance increases temporarily

Which of the following athletes would most likely use the lactic acid system?

• Cross-country skier
• Long-distance swimmer
• 400 metre runner
• Marathon runner

What is the relationship between glucose and ATP in the lactic acid system?

• 1 glucose produces 1 ATP
• 1 glucose produces 2 ATP
• 1 glucose produces 4 ATP
• 1 glucose produces 3 ATP