The table shows daily energy intake and energy use for an adult.
Table
| Daily energy intake in kJ | Daily energy use in kJ |
|---|---|
| 10500 | 8700 |
The adult then uses an extra 900 kJ each day by exercising. Their energy intake stays the same.
Which statement describes the new energy balance and its likely long-term effect?
A deficit of 900 kJ remains, so fat stores may decrease.
A deficit of 1800 kJ remains, so fat stores may decrease.
A surplus of 900 kJ remains, so fat stores may increase.
A surplus of 1800 kJ remains, so fat stores may increase.
44 exam-style questions on Edexcel GCSE Biology 5.4 Non-communicable diseases, covering 5.4.1 Interaction of factors in non-communicable disease, 5.4.2 Lifestyle factors and non-communicable disease, and 5.4.3 Treatments for cardiovascular disease. Each one has a worked solution and a mark scheme showing where the marks go.