2022 AQA GCSE Biology Paper 2 (QUESTIONS AND ANSWERS 100% CORRECT)
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2022 AQA GCSE Biology Paper 2 (QUESTIONS AND ANSWERS 100% CORRECT) What is homeostasis? Homeostasis is the maintenance of a constant internal environment in order to maintain optimum conditions for ... enzyme and cellular function. Give examples of conditions maintained by homeostasis in the body ● Blood glucose concentration ● Body temperature ● Water levels What two types of responses are used in body control systems? Nervous and chemical What three components do all control systems have? ● Receptors ● Coordination centres ● Effectors What is the function of a receptor? Receptors detect changes in the environment (stimuli). What is the function of a coordination centre? Coordination centres obtain and process information from receptors. What is the function of an effector? Effectors (muscles or glands) bring about responses to stimuli. What is the function of the nervous system? The nervous system allows the body to react to its surroundings and coordinate an appropriate response. [Show More]
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