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Biology

Stage 6 · HSC questions by topic

About this subject

Biology

Atlas organises human-reviewed questions against the NSW Stage 6 Biologysyllabus. Every published question retains its exam source and page.

Syllabus: NESA Stage 6 (2017)
Explore the NESA Stage 6 (2017) syllabus topics

Module 5: Heredity

  • Reproduction
  • Cell Replication
  • DNA and Polypeptide Synthesis
  • Genetic Variation
  • Inheritance Patterns in a Population

Module 6: Genetic Change

  • Mutation
  • Biotechnology
  • Genetic Technologies

Module 7: Infectious Disease

  • Causes of Infectious Disease
  • Responses to Pathogens
  • Immunity
  • Prevention, Treatment and Control

Module 8: Non-infectious Disease and Disorders

  • Homeostasis
  • Causes and Effects
  • Epidemiology
  • Prevention
  • Technologies and Disorders
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31 questions found

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2019HSC
Q13

Genetic drift is a gradual change in
A. the alleles of an individual due to mutation.
B. allele frequency in a population due to chance.
C. the genes of a population due to natural selection.
D. gene frequency in a population due to natural selection.

1 mark
Multiple choice
2019HSC
Q15

A germ-line mutation is known to have occurred. How is it possible that there has been no noticeable change in the phenotype of the offspring?
A. The mutation occurred in a stretch of RNA.
B. The mutation occurred in a protein-coding region.
C. The mutation occurred in a stretch of non-coding DNA.
D. The mutation did not affect the DNA sequence of any gametes.

1 mark
Multiple choice
2019HSC
Q22

Complete the table to show the differences between somatic and germ-line mutations.

3 marks
Short answer
2019HSC
Q25 (a)

A human karyotype that shows evidence of chromosomal mutation is shown.

Identify the evidence of chromosomal mutation in the karyotype.

1 mark
Short answer
2019HSC
Q25 (b)

A human karyotype that shows evidence of chromosomal mutation is shown.

Explain how cell division and fertilisation could lead to the production of this karyotype.

4 marks
Short answer
2019HSC
Q26

The map shows the percentage of adult indigenous populations able to digest lactose.
The ability to digest lactose is due to the presence of an enzyme (lactase) which can metabolise the sugar (lactose) present in milk. The gene responsible for producing lactase is usually permanently switched off at some time between the ages of 2 and 5 years. However, some people remain able to digest lactose throughout their lives.
With reference to evolution and DNA, provide possible reasons for the distribution shown in the map.

5 marks
Short answer
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