7.2 ATP—THE COMMON ENERGY MOLECULE

What is the final form of free energy that can be used for muscle contraction and other physiological processes?

• Lactic acid

• Glucose

• Adenosine triphosphate (ATP)

• Ribose

Who discovered the importance of ATP in 1941?

• Albert Einstein

• Fritz Albert Lipmann and Herman Kalckar

• Isaac Newton

• Marie Curie

What is the main source of ATP during endurance events?

• Cellular respiration (aerobic)

• Glycolysis

• Lactic acid

• ATP-PC

Which metabolic pathway allows for quick, intense muscle contraction without producing lactic acid?

• Glucose breakdown

• ATP-PC (anaerobic alactic)

• Glycolysis (anaerobic lactic)

• Cellular respiration (aerobic)

Where does the aerobic energy system take place?

• In the liver

• In the muscle fibre

• In the mitochondria

• In the bloodstream

Which energy system is more important in short-term, high-intensity activities?

• Glycolysis system

• Anaerobic system

• Aerobic system

• ATP-PC system

What is the byproduct of the glycolysis pathway?

• Lactic acid

• Glucose

• Ribose

• Adenosine triphosphate (ATP)

What is the molecule that acts as a building block that attaches phosphates and adenosine in ATP?

• Lactic acid

• Glucose

• Adenosine triphosphate (ATP)

• Ribose

Which metabolic pathway involves the complete breakdown of glucose to yield large amounts of ATP for energy?

• Glucose breakdown

• ATP-PC (anaerobic alactic)

• Glycolysis (anaerobic lactic)

• Cellular respiration (aerobic)

What is the common energy molecule for all living things?

• Adenosine triphosphate (ATP)

• Lactic acid

• Glucose

• Ribose