DP Biology (last assessment 2024)
Question 18M.2.SL.TZ1.3c
| Date | May 2018 | Marks available | [Maximum mark: 2] | Reference code | 18M.2.SL.TZ1.3c |
| Level | SL | Paper | 2 | Time zone | TZ1 |
| Command term | Explain | Question number | c | Adapted from | N/A |
c.
[Maximum mark: 2]
18M.2.SL.TZ1.3c
(c)
Explain how cuts in the skin are sealed by blood clotting.
[2]
Markscheme
a. clotting factors released from platelets
b. clotting process involves a cascade/series of reactions
c. produces thrombin
d. causes rapid conversion of fibrinogen into fibrin
e. fibrin makes a mesh to seal the wound OWTTE
