Metabolism and energy metabolism
Answers are for parents and teachers.
1
Explain in 3–4 sentences how plastic and energy metabolism are interconnected.
Breakdown gives ATP and ATP is used for synthesis; synthesis gives enzymes and substances, without which breakdown is impossible.
2
How many kJ are released when 270 g of glucose is fully oxidised? (180 g = 2800 kJ)
4200
3
How many CO₂ molecules form in the aerobic breakdown of 12 glucose molecules?
72
4
Why does breathing speed up after physical work?
Oxygen is needed to restore the ATP reserve and oxidise accumulated substances.
5
Why are enzymes needed for both anabolism and catabolism?
All reactions proceed quickly and selectively with the help of biological catalysts, enzymes.