4(b) INHERITANCE · EXAM QUESTIONS

4.14 Genome and gene

9 exam-style questions. Write your answer, check it against the mark scheme and tick the points you earned. Your marks stay on this device. Your writing is not saved.

Ratings are saved in this browser on this device, under a KS4 key kept separate from International A Level recall. Written answers are temporary and cleared when you leave the page. Use Reset to clear the ratings on this device.

  1. 01StateShort answer2 marks

    4.14 Genome and gene

    Exam question

    Mark points shown after marking

    State what is meant by a gene and a genome.

    (2)

    Write your answer, then press Show model answer and tick each mark point your answer makes. Your answer is not saved.

    Total for this question: 2 marks

  2. 02WhichMultiple choice1 mark

    4.14 Genome and gene

    Exam question

    Mark points shown after marking

    What does a gene code for?

    (1)
    Choose one answer

    Total for this question: 1 mark

  3. 03ExplainShort answer2 marks

    4.14 Genome and gene

    Exam question

    Mark points shown after marking

    Explain why knowing the human genome sequence helps medicine.

    (2)

    Write your answer, then press Show model answer and tick each mark point your answer makes. Your answer is not saved.

    Total for this question: 2 marks

  4. 04ExplainShort answer2 marks

    4.14 Genome and gene

    Exam question

    Mark points shown after marking

    Explain why every body cell contains the whole genome but cells look different.

    (2)

    Write your answer, then press Show model answer and tick each mark point your answer makes. Your answer is not saved.

    Total for this question: 2 marks

  5. 05DescribeShort answer2 marks

    4.14 Genome and gene

    Exam question

    Mark points shown after marking

    Describe the relationship between DNA, genes and chromosomes.

    (2)

    Write your answer, then press Show model answer and tick each mark point your answer makes. Your answer is not saved.

    Total for this question: 2 marks

  6. 06CalculateCalculation2 marks

    4.14 Genome and gene

    Exam question

    Mark points shown after marking

    The human genome has about 3 200 million base pairs and about 20 000 genes. Calculate the mean number of base pairs per gene.

    (2)
    base pairs

    Total for this question: 2 marks

  7. 07SuggestShort answer2 marks

    4.14 Genome and gene

    Exam question

    Mark points shown after marking

    Suggest why most of the human genome does not code for proteins.

    (2)

    Write your answer, then press Show model answer and tick each mark point your answer makes. Your answer is not saved.

    Total for this question: 2 marks

  8. 08WhichMultiple choice1 mark

    4.14 Genome and gene

    Exam question

    Mark points shown after marking

    Where is most of the genome found in a human cell?

    (1)
    Choose one answer

    Total for this question: 1 mark

  9. 09StateShort answer1 mark

    4.14 Genome and gene

    Exam question

    Mark points shown after marking

    State the name of the molecule that genes are made of.

    (1)

    Write your answer, then press Show model answer and tick each mark point your answer makes. Your answer is not saved.

    Total for this question: 1 mark

← All exam questions for 4(b)