DP Biology (last assessment 2024)

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Question 22N.2.SL.TZ0.a

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Date November 2022 Marks available [Maximum mark: 3] Reference code 22N.2.SL.TZ0.a
Level SL Paper 2 Time zone TZ0
Command term Outline Question number a Adapted from N/A
a.
[Maximum mark: 3]
22N.2.SL.TZ0.a

Humans ingest food which provides energy and nutrients to carry out life processes.

Outline how starch in the diet is modified for absorption in humans.

[3]

Markscheme
  1. starch is broken down by the enzyme amylase;
  2. (amylase) secreted by the pancreas/salivary glands;
  3. acts in the duodenum/small intestine/mouth;
  4. starch is broken down into monomers/maltose/glucose;
  5. products of digestion are smaller/more soluble molecules for absorption
Examiners report

The average mark for 7(a) was over 2 out of 3. It was quite well known with most knowing that energy was lost as heat etc.

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