ATP/PC System

Question 1

Equation for aerobic and anaerobic respiration

Answer 1

AEROBIC
glucose + o2 -> Co2 + water + energy

ANAEROBIC
Glucose -> lactic acid + energy

Question 2

Define ATP

Answer 2

Organic chemical that provides energy in living cells

Question 3

Define phosphocreatine

Answer 3

Energy rich phosphate compound found in the sarcaplasm of the muscles

Question 4

Define a coupled reaction

Answer 4

When energy required by one process is supplied by another process

Question 5

Fuel, site, enzyme, yield, by-products of ATP/PC systems

Answer 5

Fuel: phosphocreatine
Site: sarcoplasm
Enzyme: creatine kinase
Yield: 1:1
By-products: nothing

Question 6

Advantages of ATP/PC system

Answer 6

• high intensity (used for high intensity activities)
• no harmful by-products
• no delay in o2 delivery (produced in the sarcoplasm in the muscles)

Question 7

Disadvantages of the ATP/PC system

Answer 7

• short duration 3 seconds / 10 seconds for high intensity short duration events
• inefficient low energy yield