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Question 18M.3.HL.TZ1.c

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Date May 2018 Marks available [Maximum mark: 3] Reference code 18M.3.HL.TZ1.c
Level HL Paper 3 Time zone TZ1
Command term Label Question number c Adapted from N/A
c.
[Maximum mark: 3]
18M.3.HL.TZ1.c

The diagram represents the cell walls of Gram-positive and Gram-negative bacteria.

Label the layers I, II and III.

 

[3]

Markscheme

l. peptidoglycan 

ll. outer membrane/layer of lipopolysaccharide and protein 

lll. peptidoglycan

Syllabus sections