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1 mark
1 markThe diagram below shows part of the human digestive system.
In which structure is most of the water from food absorbed?
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Absorption & Assimilation (Cambridge O Level Biology)
Exam Questions
23 mins7 questions11 mark
1 markWhich of the following could be the correct effect and explanation of a disease that results in a reduced number of villi in the small intestine?
| effect | explanation | |
| A | weight gain | reduced absorption of digested food molecules |
| B | weight gain | reduced digestion of maltose to glucose, less glucose absorbed |
| C | weight loss | reduced lipid digestion and absorption |
| D | weight loss | reduced absorption of digested food molecules |
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21 mark
1 markThe diagram below shows a villus.
In which vessel would the concentration of fatty acids be highest?
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31 mark
What is not an example of assimilation?
synthesis of glycogen from glucose
synthesis of fats from fatty acids and glycerol
synthesis of glucose from starch
synthesis of proteins from amino acids
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41 mark
The diagram shows parts of the human digestive system and associated organs.
Which part would contain high concentrations of glucose and amino acids, four hours after eating a meal?
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