| Date | May 2019 | Marks available | 1 | Reference code | 19M.1.SL.tz0.5 |
| Level | Standard Level | Paper | Paper 1 | Time zone | time zone 0 |
| Command term | Question number | 5 | Adapted from | N/A |
Question
Which component of blood is greatest by volume?
A. Electrolytes
B. Plasma
C. Erythrocytes
D. Leucocytes
Markscheme
B
Examiners report
Mid-difficulty question with a low discrimination index. Answer C provided the greatest distraction.
