DP Chemistry (last assessment 2024)
Question 18N.3.hl.TZ0.9b
| Date | November 2018 | Marks available | [Maximum mark: 2] | Reference code | 18N.3.hl.TZ0.9b |
| Level | hl | Paper | 3 | Time zone | TZ0 |
| Command term | State | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 2]
18N.3.hl.TZ0.9b
Lipids play several roles in our bodies.
(b)
State two functions of lipids in the body.
[2]
Markscheme
Any two of:
«structural» components of cell membranes ✔
energy storage/utilization ✔
«thermal/electrical» insulation ✔
transport «of lipid-soluble molecules» ✔
hormones/chemical messengers ✔
Accept other specific functions, such as “prostaglandin/cytokine/bile acid synthesis”, “cell differentiation/growth”, “myelination”, “storage of vitamins/biomolecules”, “signal transmission”, “protection/padding of organs”, “precursors/starting materials for the biosynthesis of other lipid”.
