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Question 17N.3.SL.TZ0.a

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Date November 2017 Marks available [Maximum mark: 1] Reference code 17N.3.SL.TZ0.a
Level SL Paper 3 Time zone TZ0
Command term State Question number a Adapted from N/A
a.
[Maximum mark: 1]
17N.3.SL.TZ0.a

The graph shows the relationship between gastrointestinal (GI) damage and gastric acidity in 37 healthy human volunteers.

[Source: Republished with permission of Elsevier Science and Technology Journals, from ‘Integrated gastric acidity can predict the prevention of naproxen-induced gastroduodenal pathology in normal subjects’, John Plachetka, Gaetano Morelli, Carolyn Hines, Julie Borland, Alison Lyke, Diane Littlefield, Jerry D. Gardner Gastroenterology, Vol. 124, Issue 4, 2003; permission conveyed through Copyright Clearance Center, Inc.]

State the relationship between gastric acidity and GI damage.

[1]

Markscheme

probability of GI damage increases with increased «gastric» acidity

OR

positive correlation

OWTTE

Do not accept “directly proportional”

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