AQA GCSE Biology topic 5 - Homeostasis and Response Exam Practice Questions and Answers 100% Correct

AQA GCSE Biology topic 5 - Homeostasis and Response Exam Practice Questions and Answers 100% Correct homeostasis - Answer️️ -maintaining a stable environment e.g. nervous and hormonal communications, body temp, blood glucose levels. negative feedback - Answer️️ -A process that counteracts a change - increasing and decreasing levels to maintain homeostasis, e.g. sweating to lower the body temp the nervous system - Answer️️ -A system that manages the body through negative feedback, hormones and effectors made up of Central nervous system (CNS - brain + spinal cord), sensory neurone, motor neurone, effectors receptors - Answer️️ -sense the danger/stimuli e.g. a finger tip sensing the prick of a pin sensory neurone - Answer️️ -electrical impulse from the receptor is sent across this neurone to the CNS central nervous system - Answer️️ -The brain and spinal cord ; connected to the body by sensory neurones and motor neurones chemical impulse is sent from sensory neurone to the spinal cord. it transfers onto the relay neurone relay neurone - Answer️️ -within the CNS, accepts electrical impulses form the sensory neurone. this neurone is in the spinal cord motor neurone - Answer️️ -the electrical impulse is accepted from the relay neurone. it then travels across this neurone to the effector Carry signals from the CNS to effectors effector - Answer️️ -coordinated the physical reaction to a stimulus e.g. a muscle in an arm moves a finger away form a heat source Muscles or glands ; respond to receptors and bring about change synapses - Answer️️ -connect neurones