Most organisms are active in a limited temperature range
Students learn to:
identify the role of enzymes in metabolism, describe their chemical composition and use a simple model to describe their specificity on substrates
identify the pH as a way of describing the acidity of a substance
explain why the maintenance of a constant internal environment is important for optimal metabolic efficiency
describe homeostasis as the process by which organisms maintain a relatively stable internal environment
explain that homeostasis consists of two stages:
– detecting changes from the stable state
– counteracting changes from the stable state
outline the role of the nervous system in detecting and responding to environmental changes
identify the broad range of temperatures over which life is found compared with the narrow limits for individual species
compare responses of named Australian ectothermic and endothermic organisms to changes in the ambient temperature and explain how these responses assist temperature regulation
identify some responses of plants to temperature change
Students:
identify data sources, plan, choose equipment or resources and perform a first-hand investigation to test the effect of:
– increased temperature
– change in pH
– change in substrate
concentrations on the activity of named enzyme(s)
gather, process and analyse information from secondary sources and use available evidence to develop a model of a feedback mechanism
analyse information from secondary sources to describe adaptations and responses that have occurred in Australian organisms to assist temperature regulation
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