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CAIE IGCSE Biology 5.1.2 Enzymes as Biological Catalysts

Practise identifying enzymes as proteins that catalyse metabolic reactions, while rejecting distractors that describe them as substrates, carbohydrates or used-up products.

Syllabus
2026–2028
Course
Biology 0610

Exam points

  • state that enzymes are proteins rather than carbohydrates or the substrates they act upon
  • describe enzymes as biological catalysts involved in metabolic reactions
  • reject claims that enzymes slow reactions, are used up or have active sites with the same shape as their substrates

5.1.2—Enzymes as proteins that are involved question 1

[Maximum number: 1]

In addition to sucrose, amino acids are also transported in plants.

State the name of the group of molecules that are made of proteins and act as catalysts.

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