Science

Biology

Description

Unit 1: How Do Organisms regulate their functions?

In this unit students examine the cell as the structural and functional unit of life, from the single celled to the multicellular organism, including the requirements for sustaining cellular processes. Students focus on cell growth, replacement and death and the role of stem cells in differentiation, specialisation and renewal of cells. They explore how systems function through cell specialisation in vascular plants and animals, and consider the role homeostatic mechanisms play in maintaining an animal’s internal environment.

A student-adapted or student-designed scientific investigation is undertaken in Area of Study 3. The investigation involves the generation of primary data and is related to the function and/or the regulation of cells or systems. The investigation draws on the key science skills and key knowledge from Area of Study 1 and/or Area of Study 2.

Unit 2: Organisms and their environment

In this unit students explore reproduction and the transmission of biological information from generation to generation and the impact this has on species diversity. They apply their understanding of chromosomes to explain the process of meiosis. Students consider how the relationship between genes, and the environment and epigenetic factors influence phenotypic expression. They explain the inheritance of characteristics, analyse patterns of inheritance, interpret pedigree charts and predict outcomes of genetic crosses.

Students analyse the advantages and disadvantages of asexual and sexual reproductive strategies, including the use of reproductive cloning technologies. They study structural, physiological and behavioural adaptations that enhance an organism’s survival. Students explore interdependences between species, focusing on how keystone species and top predators structure and maintain the distribution, density and size of a population. They also consider the contributions of Aboriginal and Torres Strait Islander knowledge and perspectives in understanding the survival of organisms in Australian ecosystems.

Learning Standards

• How do Cells function? In this area of study Students examine the structure and functioning of cells.

• How do plant and animal systems function? Students examine how homeostatic mechanisms in animals help maintain their internal environment within a narrow range of tolerance levels, and consider malfunctions in homeostatic mechanisms.

• How do scientific investigations develop understanding of how organisms regulate their function? Survival of organisms requires control and regulation of factors within an organism and often outside an organism. Different types of cells and adaptations enhance an organism’s survival in a particular environment, while homeostatic mechanisms maintain the internal environment.

• How is inheritance explained? In this area of study students describe the production of gametes in sexual reproduction through the key events in meiosis. They explore the nature of chromosomes and the use of genetic language to read and interpret patterns of inheritance and predict outcomes of genetic crosses.

• How do inherited adaptations impact on diversity? Students explore the biological importance of genetic diversity and the structural, physiological and behavioural adaptations that enable species to survive in an ecosystem.

• How do humans use science to explore and communicate contemporary bioethical issues? In this area of study students explore a contemporary bioethical issue relating to the application of genetic knowledge, reproductive science, inheritance or adaptations and interdependencies beneficial for survival.

Learning Outcomes

• Investigate and explain how cellular structures and systems function to sustain life.

• Explain how various adaptations enhance the survival of an individual organism, investigate the relationships between organisms that form a living community and their habitat, and analyse the impacts of factors that affect population growth.

• Design and undertake an investigation related to the survival of an organism or species, and draw conclusions based on evidence from collected data.

• Compare the advantages and disadvantages of asexual and sexual reproduction, explain how changes within the cell cycle may have an impact on cellular or tissue system function and identify the role of stem cells in cell growth and cell differentiation and in medical therapies.

• Apply an understanding of genetics to describe patterns of inheritance, analyse pedigree charts, predict outcomes of genetic crosses and identify the implications of the uses of genetic screening and decision making related to inheritance.

• Investigate and communicate a substantiated response to a question related to an issue in genetics and/or reproductive science.

Assessment

The award of satisfactory completion for a unit is based on a decision that the student has demonstrated achievement of the set of outcomes specified for the unit. This decision will be based on the teacher’s assessment of the student’s overall performance on a variety of assessment tasks designated for the unit. Assessment tasks for this unit include student note books, student-designed practical investigations; practical activities; multimedia presentations; media responses; oral presentations; annotated posters; data analysis; problem solving and tests; multiple choice and/or short answer and/or extended response. For Outcome 3 a report of a student-designed or adapted using an appropriate format, for example a scientific poster, practical report, oral communication or digital presentation.

Pathways

Unit 1 & 2 Biology leads directly to Unit 3 & 4 Biology. The prerequisites for entry into Unit 3 & 4 Biology are the satisfactory completion of Units 1/2 Biology. Entry for Units 3/4 where 1/2 not completed is not recommended.

Chemistry Description

Unit 1: How can the diversity of materials be explained?

The development and use of materials for specific purposes is an important human endeavour. In this unit students investigate the chemical structures and properties of a range of materials, including covalent compounds, metals, ionic compounds and polymers. They are introduced to ways that chemical quantities are measured. They consider how manufacturing innovations lead to more sustainable products being produced for society through the use of renewable raw materials and a transition from a linear economy towards a circular economy. Students conduct practical investigations involving the reactivity series of metals, separation of mixtures by chromatography, use of precipitation reactions to identify ionic compounds, determination of empirical formulas, and synthesis of polymers. A student-directed research investigation into the sustainable production or use of a selected material is to be undertaken in Area of Study 3. The investigation explores how sustainability factors such as green chemistry principles and the transition to a circular economy are considered in the production of materials to ensure minimum toxicity and impacts on human health and the environment.

Unit 2: How do chemical reactions shape the natural world?

Society is dependent on the work of chemists to analyse the materials and products in everyday use. In this unit students analyse and compare different substances dissolved in water and the gases that may be produced in chemical reactions. They explore applications of acid-base and redox reactions in society. Students conduct practical investigations involving the specific heat capacity of water, acid-base and redox reactions, solubility, molar volume of a gas, volumetric analysis, and the use of a calibration curve. A student-adapted or studentdesigned scientific investigation is undertaken in Area of Study 3. The investigation involves the generation of primary data and is related to the production of gases, acid-base or redox reactions, or the analysis of substances in water.

Areas of Study

• How do the chemical structures of materials explain their properties and reactions?

• How are materials quantified and classified?

• How can chemical principles be applied to create a more sustainable future?

• How do chemicals interact with water?

• How are chemicals measured and analysed?

• How do quantitative scientific investigations develop our understanding of chemical reactions?

Learning Outcomes

• Explain how elements form carbon compounds, metallic lattices and ionic compounds, experimentally investigate and model the properties of different materials, and use chromatography to separate the components of mixtures.

• Calculate mole quantities, use systematic nomenclature to name organic compounds, explain how polymers can be designed for a purpose, and evaluate the consequences for human health and the environment of the production of organic materials and polymers.

• Undertake an investigation involving the selection and evaluation of a recent discovery, innovation, advance, case study, issue or challenge, including consideration of sustainability concepts (green chemistry principles, sustainable development and the transition towards a circular economy).

• Explain the properties of water in terms of structure and bonding, and experimentally investigate and analyse applications of acid-base and redox reactions in society.

• Calculate solution concentrations and predict solubilities, use volumetric analysis and instrumental techniques to analyse for acids, bases and salts, and apply stoichiometry to calculate chemical quantities.

• Design and then conduct a scientific investigation related to chemical equations and/or analysis, which must include the generation of primary data. They develop a research question related to the production of gases, acid-base or redox reactions or the analysis of substances in water, and adapt or design and then conduct a scientific investigation to generate appropriate quantitative data. Students organise and interpret the data and reach a conclusion in response to their research question.

Assessment

The award of satisfactory completion for a unit is based on whether the student has demonstrated the set of outcomes specified for the unit. To determine satisfactory completion a variety of learning activities and assessment tasks are undertaken so as to provide a range of opportunities for students to demonstrate the key knowledge and key skills in the outcomes.

The areas of study, including the key knowledge and key skills listed for the outcomes in the Chemistry Study Design, should be used for reference. All assessments at Units 1 and 2 are school-based.

Pathways

Unit 1 & 2 Chemistry leads directly to Unit 3 & 4 Chemistry. The prerequisites for entry into Unit 3 & 4 Chemistry are the satisfactory completion of Units 1/2 Chemistry. Entry for Units 3/4 where 1/2 has not been completed is not recommended.