User interface language: English | Español

Date November 2016 Marks available 2 Reference code 16N.2.SL.TZ0.3
Level Standard level Paper Paper 2 Time zone TZ0 / no time zone
Command term Describe Question number 3 Adapted from N/A

Question

Define metabolism.

[1]
a.

Identify the following processes as either anabolism or catabolism by placing a tick (√) in the correct box.

[2]
b.

Describe cell respiration in terms of metabolism.

[2]
c.

Markscheme

(the web of all) the enzyme-catalyzed reactions in a cell/organism
OR
the totality of an organism’s chemical reactions (consisting of catabolic and anabolic pathways which manage the material and energy resources of the cell)

a.

b.

a. «cell respiration is metabolism because» enzymes control the reactions

b. energy is released from complex molecules «to make ATP»

c. respiration is catabolic (metabolism)
OR
complex molecules become simpler
OR
C6H12O6 to CO2 + H2O

c.

Examiners report

[N/A]
a.
[N/A]
b.
[N/A]
c.

Syllabus sections

Core » Topic 2: Molecular biology » 2.8 Cell respiration
Show 44 related questions
Core » Topic 2: Molecular biology
Core

View options