Energy Systems - Glycolytic System (A2)

Question 1

What type of reaction is the glycolytic system and what is the site of the reaction?

Answer 1

Anaerobic

Sarcoplasm

Question 2

What is the fuel for the reaction?

Answer 2

Glycogen/glucose

Question 3

Which enzyme converts glycogen to glucose?

Answer 3

Glycogen phosphorylase

Question 4

Which enzyme starts the breakdown of glucose?

Answer 4

Phosphofructokinase

Question 5

What does the glycolysis process do?

Answer 5

Glucose broken down into pyruvic acid

Question 6

How much energy is produced during glycolysis?

Answer 6

Enough to resynthesise 2 ATP molecules (partial breakdown)

Question 7

What happens if glycolysis occurs without the presence of oxygen?

Answer 7

Pyruvic acid is converted to lactic acid using Lactate Dehydrogenase

Question 8

What happens if glycolysis occurs with oxygen?

Answer 8

Lactate Dehydrogenase converted back to Pyruvic Acid to be broken down further for more energy

Question 9

What is the buffering process?

Answer 9

Ability of blood to reduce a change in pH

Reduces the build up of lactic acid

Question 10

What does OBLA stand for and result in?

Answer 10

Onset Blood Lactate Accumulation
Results in:
Pain
Inhibited muscular activity
Fatigue

Question 11

What are the strengths of the glycolytic system?

Answer 11

No delay for O2
Large fuel stores (liver, muscles, blood stream)
Provides energy for up to 3 mins
Lactic acid can be recycled for more energy production

Question 12

What are the weaknesses of the glycolytic system?

Answer 12

Lactic acid lowers pH and reduces enzyme activity
Low ATP yield
Long recovery process

Question 13

What is the energy equation for the Glycolytic System?

Answer 13

C6 H12 O6 -> 2C3 H6 O6