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Question 18M.3.HL.TZ1.11a.i

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.3.HL.TZ1.11a.i
Level HL Paper 3 Time zone TZ1
Command term Define Question number a.i Adapted from N/A
a.i.
[Maximum mark: 1]
18M.3.HL.TZ1.11a.i

Some microorganisms can form a biofilm on living or non-living surfaces. The image shows a Staphylococcus aureus biofilm inside a medical catheter.

(a.i)

Define biofilm.

[1]

Markscheme

«a biofilm is» any group of microorganisms in which cells stick to each other on a surface

OR

«a biofilm is» any group of microorganisms in which cells cooperatively produce a polysaccharide matrix

Syllabus sections