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Cambridge IGCSE Biology practice

Paper 3 structured question: Chromosomes, genes and proteins

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Chromosomes, genes and proteins

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Paper 3Theory (Core)2 marks

Chromosomes and genes

Description

Description of chromosomes

Chromosomes are thread-like structures found in the nucleus of cells. They are made of DNA, which contains genes. Genes carry the genetic information that controls inherited characteristics.

  1. a

    State what chromosomes consist of.

    Aim for approximately 1 distinct marking point.

    [1]
  2. b

    Identify what form the genetic information in chromosomes.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 3 structured question: Chromosomes, genes and proteins

Paper 3Theory (Core)2 marks

Diagram Description

Diagram of a chromosome

A diagram shows a chromosome with a label pointing to DNA and another label pointing to genes along the DNA strand.

  1. a

    State what chromosomes are made of.

    Aim for approximately 1 distinct marking point.

    [1]
  2. b

    Identify what genetic information is held in chromosomes.

    Aim for approximately 1 distinct marking point.

    [1]