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Cambridge IGCSE Chemistry practice

Paper 4 structured question: Polymers

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Polymers

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Paper 4Theory (Extended)3 marks

Understanding the role of proteins in living organisms.

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Functions of Proteins

Proteins are involved in various biological functions such as catalysis, structure, and transport.

  1. a

    Explain why proteins are considered natural polyamides.

    Aim for approximately 3 distinct marking points.

    [3]

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Paper 4 structured question: Polymers

Paper 4Theory (Extended)1 marks

Description

Structure of Amino Acids

Amino acids are the building blocks of proteins, characterized by a central carbon atom bonded to an amino group, a carboxyl group, a hydrogen atom, and a variable side chain (R group).

  1. a

    State the general structure of an amino acid.

    Aim for approximately 1 distinct marking point.

    [1]