DP Biology (last assessment 2024)
Question 19M.3.SL.TZ2.1b.ii
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.3.SL.TZ2.1b.ii |
| Level | SL | Paper | 3 | Time zone | TZ2 |
| Command term | Label | Question number | b.ii | Adapted from | N/A |
b.ii.
[Maximum mark: 1]
19M.3.SL.TZ2.1b.ii
Two models of plasma membrane structure are shown.
[Source: diagram from article published in The American Journal of Pathology, 65, J Singer and G Nicolson,
The structure and chemistry of mammalian cell membranes, 427–437, Copyright Elsevier (1971)]
(b.ii)
Label the model B diagram to show a phospholipid.
[1]
Markscheme
[Source: diagram from article published in The American Journal of Pathology, 65, J Singer and G Nicolson, The structure and chemistry of mammalian cell membranes, 427–437, Copyright Elsevier (1971)]
Accept a label to any part of any phospholipid
Accept different form of labelling that clearly indicate the phospholipids.
Examiners report
Most students could label the areas with protein and phospholipid.
