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Cambridge IGCSE Biology practice

What does lactase do to lactose in milk?

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Show answerBiotechnology revisionRevise the key idea

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Biotechnology

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What does lactase do to lactose in milk?.

  1. A.Breaks lactose into glucose and galactose
  2. B.Converts lactose into fat
  3. C.Removes lactose completely
  4. D.Changes lactose into protein

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Lactase and Lactose-Free Milk

Lactase is an enzyme that breaks down lactose in milk into glucose and galactose. This process produces lactose-free milk, which is suitable for people who are lactose intolerant.

  1. a

    Explain how lactase is used to create lactose-free milk.

    Aim for approximately 3 distinct marking points.

    [3]