DP Biology (last assessment 2024)
Question 18N.3.SL.TZ0.b
| Date | November 2018 | Marks available | [Maximum mark: 2] | Reference code | 18N.3.SL.TZ0.b |
| Level | SL | Paper | 3 | Time zone | TZ0 |
| Command term | Distinguish | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 2]
18N.3.SL.TZ0.b
The energy used by the brain and skeletal muscle of a 70 kg man was measured over the period of one day.
Using only the data in the table, distinguish between the use of energy in the brain and in skeletal muscle.
[2]
Markscheme
a. skeletal muscle uses more total energy than the brain ✔
b. the brain uses more energy per kg than skeletal muscle
OR
the brain has higher metabolic rate ✔
Accept numerical answers if comparative terms are used
