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Question 18N.3.HL.TZ0.18d

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Date November 2018 Marks available [Maximum mark: 2] Reference code 18N.3.HL.TZ0.18d
Level HL Paper 3 Time zone TZ0
Command term Explain Question number d Adapted from N/A
d.
[Maximum mark: 2]
18N.3.HL.TZ0.18d

The diagram shows the emulsion and absorption of a fat globule in the gut.

(d)

Explain how epithelial cells in the gut are adapted for absorption.

[2]

Markscheme

a. microvilli/brush border to increase surface area ✔

b. numerous mitochondria for energy for active transport ✔

c. have transport proteins for specific nutrients ✔
eg: glucose, amino acids 

d. single layer of cells/short distance allowing for diffusion ✔

Explanation must be included for each characteristic

Syllabus sections