ATP-PC SYSTEM

Question 1

What is the chemical fuel used in the ATP-PC system?

Answer 1

Phosphocreatine (PC)

Question 2

What are the controlling enzymes in the ATP-PC system?

Answer 2

Creatine kinase.

Question 3

How does the ATP-PC system work?

Answer 3

1. PC is broken down by creatine kinase to release energy.

2. The same pocket of energy then builds up ADP+P to form ATP.

Question 4

What are the advantages of the ATP-PC system?

Answer 4

Advantages:

1. Simple and rapid breakdown
2. Provides energy quickly
3. No fatiguing by-products
4. No delay for oxygen

Question 5

What are some sporting examples of when the ATP-PC system is used?

Answer 5

When the system is used:

• Jump shot in basketball.
• 100m sprint.
• Start of a 400m race.

Question 6

What type of reaction is the ATP-PC system?

Answer 6

The ATP-PC system is an exothermic reaction.

Question 7

What is the site of reaction in the ATP-PC system?

Answer 7

The site of reaction in the ATP-PC system is the sarcoplasm.

Question 8

How much ATP is re-synthesised in the ATP-PC system?

Answer 8

In the ATP-PC system, every 1 molecule of PC = 1 molecule of ATP so the ratio is 1:1.

Question 9

What is the intensity of the ATP-PC system?

Answer 9

The intensity of the ATP-PC system is very high.

Question 10

What is the duration of the ATP-PC system?

Answer 10

The duration of the ATP-PC system is 2-10 seconds.

Question 11

What are the disadvantages of the ATP-PC system?

Answer 11

Low ATP yield and small PC stores lead to rapid fatigue after 8-10 seconds.

Question 12

What are the specific stages of the ATP-PC system?

Answer 12

1. PC –> P + C + energy (exothermic)

2. energy + ADP + P –> ATP (endothermic)

Question 13

What are the energy equations for the ATP-PC system?

Answer 13

1. PC –> P + C + energy

2. energy + ADP + P –> ATP