AQA • Biology Paper 2
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AQA GCSE Biology Paper 2 What is homeostasis? ANS:The maintenance of a constant internal environment. What is a stimulus? ANS:A change in your environment than requires a response. e.g Light, sound, touch, pressure, pain, chemical or temperature. What do the receptors do? ANS:Detect the stimulus or change in environment. What happens after the receptors? ANS:Receptors send messages to the CNS via the sensory neurone. What makes up the central nervous system? ANS:The brain or spinal cord Wh...
AQA AS BIOLOGY Paper 2 Thursday 25 May 2023 Morning Time allowed: 1 hour 30 minutes Materials For this paper you must have: • a ruler with millimetre measurements • a scientific calculator. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of this page. • Answer all questions. • You must answer the questions in the spaces provided. Do not write outside the box around each page or on blank pages. • If you need extra space ...