DP Biology (last assessment 2024)

Test builder »

Question 18N.3.HL.TZ0.c

Select a Test
Date November 2018 Marks available [Maximum mark: 3] Reference code 18N.3.HL.TZ0.c
Level HL Paper 3 Time zone TZ0
Command term List Question number c Adapted from N/A
c.
[Maximum mark: 3]
18N.3.HL.TZ0.c

The diagram shows an overview of the Henriksdal wastewater treatment process in Stockholm, Sweden.

Probes are used to monitor significant variables within the fermenter. List three significant variables that should be monitored in the fermenter.

[3]

Markscheme

a. pH/acidity/alkalinity ✔

b. foam ✔

c. metabolites ✔

d. substrate ✔

e. oxygen ✔

f. carbon dioxide ✔

g. temperature ✔

h. pressure ✔

Accept other valid condition

Syllabus sections