AQA GCSE COMBINED SCIENCE BIOLOGY - PAPER 2 EXAM WITH ANSWERS.

AQA GCSE COMBINED SCIENCE n n n




BIOLOGY - PAPER 2 EXAM WITH
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ANSWERS n




What is homeostasis? - correct answer-The process of maintaining a stable
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internal environment
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Why is homeostasis important? - correct answer-Because it is essential for the
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survival of cells
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What does the control system do? - correct answer-Keeps the conditions in your
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body steady
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What happens in the blood glucose level is too high? - correct answer-the control
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system decreases the level
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What happens in the blood glucose level is too low? - correct answer-the control
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system increases the level
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What does the nervous system mean? - correct answer-that humans react to their
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surroundings and coordinate their behaviour
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What does the Central Nervous System (CNS) consist of? - correct answer-brain
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and spinal cord
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What is the CNS connected to? - correct answer-the body by sensory neurones
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and motor neutrons
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What is do Sensory Neurones do? - correct answer-They carry information as
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electrical impulses from the receptor to the CNS
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, What do Motor Neutrons do? - correct answer-They carry electrical impulses from
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the CNS to effectors
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What are Receptors? - correct answer-Cells that detect stimuli
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Give an example of a receptor - correct answer-Receptors in the ear detect sound
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What do Effectors responded to? - correct answer-Electrical impulses and bring
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about to a change
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Give 2 examples of effectors - correct answer-Muscles and glands.
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What is the process of CNS? - correct answer-Stimulus -> Receptor -> Sensory
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Neurone -> CNS -> Motor Neurone -> Effector -> Response
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What is a Synapse? - correct answer-it is where two neurones join together
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What are Reflexes? - correct answer-an automatic responses to prevent injury
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What are hormones? - correct answer-Chemical messengers sent in the blood
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What is another name for the Pituitary Gland? - correct answer-Master Gland
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What does the Pituitary Gland produce? - correct answer-many hormones that
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regulate body conditions
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What do Ovaries produce? - correct answer-oestrogen
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What is oestrogen involved in? - correct answer-Menstrual cycle
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What do the testes produce? - correct answer-testosterone
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What do the testes control? - correct answer-puberty and sperm production in men
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What does the thyroid produce? - correct answer-Thyroxine
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What is Thyroxine involved in? - correct answer-Rate of metabolism
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temperature

What does the Adrenal Gland produce? - correct answer-Adrenaline
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What is Adrenaline involved in? - correct answer-Prepare the body for a fight or
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flight response
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What does the pancreas produce? - correct answer-insulin
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What is Insulin used i? - correct answer-Regulating the blood glucose level.
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