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Question: janina a 5yearold girl was taken to her medical practitioner...

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Janina, a 5-year-old girl, was taken to her medical practitioner with a six-month history of loose stools, abdominal bloating (distension), and flatulence. Her mother recalls that the problems started when Janina started to drink cow's milk. Investigations revealed that Janina was lactose intolerant.

 

1.      Which enzyme is involved in lactose digestion and where is it located? (~30 words) [4marks]

2.      What type of molecule is lactose and what is it normally broken down into? (~20 words) [3marks]

3.      Why would a lack of the enzyme involved in lactose digestion result in loose stools, abdominal bloating, and flatulence?

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