Component: Biology Skills

Question 4

Section I Question 4 - 2002 HSC

Description of a body's response to an infection

Question 4

Section I Question 4 - 2001 HSC

Most appropriate investigation to determine the effect of pH on the activity of an enzyme

Question 5

Section I Question 5 - 2001 HSC

Explanation of why boiling preserves the sweet taste of corn kernels

Question 9

Section I Question 9 - 2010 HSC

Conclusion drawn from graphs showing experimental results

Question 10

Section I Question 10 - 2010 HSC

Application of experimental results to the acidity of blood as it circulates in the body

Question 10

Section I Question 10 - 2001 HSC

Genotypes produced during meiosis which includes crossing-over and random segregation of homologous chromosomes

Question 13

Section I Question 13 - 2010 HSC

Correct order of processes involved in replication of DNA

Question 14

Section I Question 14 - 2010 HSC

Determination of type of inheritance shown in a pedigree diagram

Question 14

Section I Question 14 - 2002 HSC

Technique to measure extent of evolutionary relationship between animals

Question 15

Section I Question 15 - 2010 HSC

Reason for change in leaf size as a rainforest vine grows to the top of a tree

Question 16

Section I Question 16 - 2010 HSC

Sequence of events after DNA is subjected to radiation

Question 16-18

Section I Question 16-18 - 2001 HSC

16. Validity of survey about genetically modified food. 17. Relationship between a structural feature and the function of an artery. 18. Products extracted from donated blood and reason for development of artificial blood.

Question 18

Section I Question 18 - 2010 HSC

Determination of approximate diameter of a virus

Question 19-21

Section I Question 19-21 - 2001 HSC

19. Procedure followed in a first-hand investion, including safe work practices. 20. Table showing responses of an ectothermic and an endothermic animal to temperature changes. 21. Contribution of two scientists from a list to the understanding of the chromosomal nature of inheritance.

Question 20

Section I Question 20 - 2010 HSC

Sequence of events in an immune response

Question 25

Section I Question 25 - 2010 HSC

(a) Justify equipment or resources used in a first-hand investigation of a longitudinal section of xylem tissue. (b) Draw a diagram to represent a longitudinal section of xylem tissue and label one characteristic feature.

Question 25-28

Section I Question 25-28 - 2001 HSC

25. Possible future effects of the widespread use of antibiotics on the spread of disease. 26. Reason for taking immune suppressing drugs following an organ transplant and consequence for patients. 27. Assessment of a statement's validity using graphical data. 28. Impact of scientific understanding and technology on developments in reproductive technologies.

Question 28

Section II Question 28 - 2002 HSC

(a) Organ of Corti; wavelength, frequency and pitch of a sound; structures used by animals to produce sound. (b) Features of the cerebrum, cerebellum and medulla oblongta; regions of the brain involved in speech. (c) Graph of data and statement of relationship between variables; human eye's ability to focus on objects at different distances. (d) Structures and processes in the retina that transform light into electrochemical signals.

Question 29

Section II Question 29 - 2010 HSC

(a) Using source material provided, identify responses of plants to temperature change. (b) Evaluate relevance and reliability of each source of information.

Question 29

Section II Question 29 - 2001 HSC

(a) Location and function of structures in the eye. (b) Collection and assessment of information on structures used by animals to produce sound. (c) Describe use of technology to overcome effects of cataracts. (d) Justify the procedure and conclusions of an investigation into the process of accommodation. (e) Evaluate the appropriateness of devices that assist people with hearing impairment.

Question 30

Section II Question 30 - 2002 HSC

(a) Difference between a haploid and a diploid cell; definition and use of linkage to map chromosomes. (b) Description and justification of the design of a model of DNA. (c) Graph of data; definition of polygenic inheritance; comparison with Mendel's pattern of inheritance. (d) Comparison between selective breeding and gene cloning.

Question 31

Section II Question 31 - 2010 HSC

(a) Contruct a table identifying structures used by insects, fish and mammals to detect vibrations. (b) Draw diagrams illustrating vocal folds for high and low pitched notes. (c) Explain the effect of location in the retina on the stucture of cones. Outline the role of rhodopsin in rods. (d) Explain causes for lack of action potentials in part of a mammal's brain. Outline how this condition could change behaviour. (e) Evaluate how understanding of the ear and eye has led to development of 3D images and surround sound systems.

Question 32

Section II Question 32 - 2002 HSC

(a) Definition of half-life of an isotope; one use of radioisotopes in biochemistry; evidence that increased understanding of photosynthesis. (b) Investigation, including control of variables, to test observations by a listed 17th and 18th century scientist. (c) Graph of data; prediction based on data; reason for action spectrum of photosynthesis not matching that of chlorophyll. (d) Explanation of the role of research in confirming the relationship between ATP production and photosynthesis.

Question 32

Section II Question 32 - 2001 HSC

(a) Mammalian characteristics. Skeletal differences between Homo sapiens and Australopithecus afarensis. (b) Explain how to gather radiometric data to date fossilised material and assess the information for relevance and reliability. (c) Analyse the evolutionary significance of polymorphism in humans. (d) Outline and justify the conclusions of an analysis of similarities and differences between groups of primates. (e) Justify predictions of factors affecting future human evolution.

Question 33

Section II Question 33 - 2010 HSC

(a) Construct a table identifying effects of mutations. (b) Draw diagrams to show similarities and differences between chromosomes in the diploid cell and a haploid cell resulting from meiosis. (c) Predict ratios of phenotypes from a pedigree for linked and non-linked genes. (d) Explain how data can be collected to identify relative position of linked genes. Reasons why human genome project could not be achieved using linkage maps. (e) Evaluate how understanding of gene cloning and gene cascades has led to new applications for technologies.