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Question 18M.3.HL.TZ2.5b

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.3.HL.TZ2.5b
Level HL Paper 3 Time zone TZ2
Command term State Question number b Adapted from N/A
b.
[Maximum mark: 1]
18M.3.HL.TZ2.5b

The images show differences in structure between the brain of a person without Alzheimer’s disease (image I) and the brain of a patient with Alzheimer’s disease (image II).

[Source: Reprinted by permission from Springer Nature: Nature, Pathways towards and away from Alzheimer’s disease,
Mark P. Mattson, © 2004]

(b)

State the difference in the cerebral cortex between the two images of the brain.

[1]

Markscheme

a. «image II shows» reduction in size/volume/total amount of tissue/lobes 

b. «image II shows» increased space between foldings 

c. «image II shows» reduced surface area

Allow vice versa for image I.

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