DP Biology (last assessment 2024)
Question 20N.3.HL.TZ0.21a
| Date | November 2020 | Marks available | [Maximum mark: 2] | Reference code | 20N.3.HL.TZ0.21a |
| Level | HL | Paper | 3 | Time zone | TZ0 |
| Command term | Outline | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 2]
20N.3.HL.TZ0.21a
(a)
Outline the function of the stomach in food digestion.
[2]
Markscheme
a. produces acid to break down molecules;
b. churns food for mechanical digestion;
c. produces proteases to digest proteins/peptides;
Allow pepsin.
Do not allow “acid kills bacteria”.
Examiners report
Most candidates could outline at least one function of the stomach, and the strongest candidates provided complete answers.
