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Date November 2018 Marks available 1 Reference code 18N.1.SL.TZ0.5
Level Standard level Paper Paper 1 Time zone TZ0 / no time zone
Command term Deduce Question number 5 Adapted from N/A

Question

Apparatus was set up as shown to collect data.

The graph shows the results after 47 minutes of data collection.

What causes the rates to differ?

I.   Different concentration gradients at the start

II.  Diffusion of sugar is initially greater in Y than in X

III. The systems are reaching equilibrium over time

A.  I only

B.  II only

C.  I and III only

D.  II and III only

Markscheme

C

Examiners report

[N/A]

Syllabus sections

Core » Topic 1: Cell biology » 1.5 The origin of cells
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Core » Topic 1: Cell biology
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