2018 Biology sample paper

Sample Questions

HIGHER SCHOOL CERTIFICATE EXAMINATION

Biology

This document shows the layout of the examination and provides some sample questions for each of the sections.

General Instructions

? Reading time ? 5 minutes ? Working time ? 3 hours ? Write using black pen ? Draw diagrams using pencil ? For questions in Section II, show all relevant working in questions

involving calculations ? NESA approved calculators may be used

Total marks: 100

Section I ? 20 marks (pages 3?6) ? Attempt Questions 1?20 ? Allow about 35 minutes for this section

Section II ? 80 marks (pages 7?20) ? Attempt Questions 21?XX ? Allow about 2 hours and 25 minutes for this section

The first HSC examination for the new Biology Stage 6 syllabus will be held in 2019.

The first HSC examination for the new Biology Stage 6 syllabus will be held in 2019. The Biology examination specifications can be found in the Assessment and Reporting in Biology Stage 6 document. Questions may require candidates to integrate knowledge, understanding and skills developed through studying the course. The Year 11 course is assumed knowledge for the Year 12 course. There is no expectation that all of the Year 12 content will be examined each year. The examination will test a representative sample of the Year 12 content in any given year. The following sample questions provide examples of some questions that may be found in HSC examinations for Biology. Each question has been mapped to show how the sample question relates to syllabus outcomes and content. Answers for the objective-response questions (Section I) and marking guidelines for the short-answer questions (Section II) are provided. The marking guidelines indicate the criteria associated with each mark or mark range. In the examination, students will record their answers to Section I on a multiple-choice answer sheet and their answers to Section II in the spaces provided on the examination paper. The sample questions, annotations and marking guidelines provide teachers and students with guidance as to the types of questions to expect and how they may be marked. They are not meant to be prescriptive. Each year the structure of the examination may differ in the number and type of questions, or focus on different syllabus outcomes and content.

Note: ? Comments in coloured boxes are annotations for the purpose of providing guidance for

future examinations. ? Teachers and students should still refer to past HSC examination papers for examples of

questions that may be included.

? 2 ?

Section I

20 marks Attempt Questions 1?20 Allow about 35 minutes for this section

This is NOT a complete sample examination paper. Five sample questions are included in this section.

Use the multiple-choice answer sheet for Questions 1?20.

Past examination papers provide guidance for other types of multiplechoice questions that could be included.

1 An investigation was undertaken to examine the cause of lactose intolerance, a noninfectious condition found in some humans who cannot digest milk. The investigation found variation in the occurrence of lactose intolerance in human populations from different parts of the world.

What is this investigation an example of?

A. A study of ecosystems B. A microbiological study C. An epidemiological study D. A study of the human immune system

A variety of stimulus material such as text, diagrams, pictures, graphs, photographs and illustrations may be included in questions in Section I. However, stimulus material will only be included when it is essential for answering the question.

Multiple-choice options (A?D) may be presented in different formats, for example, text, numbers, tables, graphs, photographs, diagrams.

? 3 ?

2 The bread mould, Neurospora crassa, normally produces its own amino acids from raw materials through a system of enzymes.

Gene A

Gene B

Gene C

Enzyme A

Enzyme B

Enzyme C

Raw materials

Ornithine

Citrulline

Arginine

If a mutation occurred in gene B, the bread mould would still produce arginine if supplied with

A. citrulline. B. ornithine. C. enzyme C. D. raw materials.

3 Colour blindness is a sex-linked recessive trait.

Susan is not colourblind but her father is. Susan is married to James who is also not colourblind. Susan and James are expecting twins, a boy and a girl.

What is the probability that the boy or the girl will be colourblind?

Boy

Girl

A.

0%

0%

B.

50%

0%

C.

0%

50%

D.

50%

50%

? 4 ?

4 Eight sick animals had the same symptoms. Blood tests showed that they were infected with the same type of bacterium. Which of the following would be the best course of action to determine if this particular type of bacterium is the cause of the symptoms? A. Treat all eight animals with an antibiotic known to kill this type of bacterium. Check if they recover. B. Find other animals with the same symptoms. Attempt to isolate the same type of bacterium from their blood. C. Inject blood from animals with the symptoms into suitable host individuals. Check if they develop the same symptoms. D. Use bacteria from the blood of affected animals to inoculate healthy animals. If these healthy animals develop the symptoms, attempt to isolate the same bacterium from their blood.

? 5 ?

5 It is suspected that a child has a recessive, sex-linked condition. An initial pedigree was developed.

Which of the following is most likely to depict this initial pedigree?

A.

B.

C.

D.

Unaffected male Unaffected female Affected male Affected female

Multiple-choice options (A?D) may be presented in different formats, for example, text, numbers, tables, graphs, photographs, diagrams.

? 6 ?

Sample HIGHER SCHOOL CERTIFICATE Questions EXAMINATION

Biology Section II Answer Booklet

Questions in Section II may contain parts. There will be 20 to 25 items and at least two items will be worth 7 to 9 marks.

This is NOT a complete sample examination paper. Seven sample questions (eight items) are included in this section.

80 marks Attempt Questions 21?XX Allow about 2 hours and 25 minutes for this section

Instructions

? Answer the questions in the spaces provided. These spaces provide guidance for the expected length of response.

? Show all relevant working in questions involving calculations.

? Extra writing space is provided at the back of this booklet. If you use this space, clearly indicate which question you are answering.

Please turn over ? 7 ?

Question 21 (6 marks)

A variety of stimulus material such as text, diagrams, pictures, graphs, photographs and illustrations may be included in questions in Section II. However, stimulus material will only be included when it is essential for answering the question.

The diagram below shows the immune response after primary exposure to a pathogen.

Primary exposure to

pathogen

Secondary exposure to same pathogen

Concentration of antibody

Time

(a) On the diagram, continue the graph to show the immune response upon

2

secondary exposure to the same pathogen.

(b) Using annotations on the diagram, explain the shape of the entire graph.

4

Whenever possible, question parts are sequenced in order of difficulty.

An incorrect graph in part (a) will not necessarily preclude students from achieving full marks in part (b).

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