AQA GCSE Combined Science Biology - Paper 2
questions and solutions
What is homeostasis? - answersThe process of maintaining a stable internal environment
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Why is homeostasis important? - answersBecause it is essential for the survival of cells
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What does the control system do? - answersKeeps the conditions in your body steady
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What happens in the blood glucose level is too high? - answersthe control system decreases the level
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What happens in the blood glucose level is too low? - answersthe control system increases the level
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What does the nervous system mean? - answersthat humans react to their surroundings and coordinate their
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behaviour
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What does the Central Nervous System (CNS) consist of? - answersbrain and spinal cord
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What is the CNS connected to? - answersthe body by sensory neurones and motor neutrons
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What is do Sensory Neurones do? - answersThey carry information as electrical impulses from the receptor to the
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CNS
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What do Motor Neutrons do? - answersThey carry electrical impulses from the CNS to effectors
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What are Receptors? - answersCells that detect stimuli
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Give an example of a receptor - answersReceptors in the ear detect sound
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What do Effectors responded to? - answersElectrical impulses and bring about to a change
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Give 2 examples of effectors - answersMuscles and glands.
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What is the process of CNS? - answersStimulus -> Receptor -> Sensory Neurone -> CNS -> Motor Neurone ->
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Effector -> Response
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What is a Synapse? - answersit is where two neurones join together
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What are Reflexes? - answersan automatic responses to prevent injury
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What are hormones? - answersChemical messengers sent in the blood
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What is another name for the Pituitary Gland? - answersMaster Gland
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, What does the Pituitary Gland produce? - answersmany hormones that regulate body conditions
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What do Ovaries produce? - answersoestrogen
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What is oestrogen involved in? - answersMenstrual cycle
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What do the testes produce? - answerstestosterone
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What do the testes control? - answerspuberty and sperm production in men
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What does the thyroid produce? - answersThyroxine
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What is Thyroxine involved in? - answersRate of metabolism
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heart rate wu wu
temperature
What does the Adrenal Gland produce? - answersAdrenaline
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What is Adrenaline involved in? - answersPrepare the body for a fight or flight response
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What does the pancreas produce? - answersinsulin
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What is Insulin used i? - answersRegulating the blood glucose level.
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Give 3 characteristics of nerves - answersVery fast action
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Act for a short time
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Act on a very precise
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Give 3 characteristics of hormones - answersSlower action
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Act for a long time
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Act in a more general way
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What is Insulin used for? - answersReducing blood glucose levels
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How many types of diabetes are there ? - answers2
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What happens in type 1 diabetes? - answersThe pancreas produces little or no insulin
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How do you treat Diabetes type 1? - answersNeed injections of insulin throughout the day
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What is type 2 diabetes? - answersWhere a person becomes resistant to their own insulin
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What can type 2 diabetes be influenced by? - answersa person's lifestyle choices
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How do you treat Diabetes type 2? - answerseating a carbohydrate -controlled diet and doing controlled regular
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exercise
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How many different stages are there in a Menstrual Cycle? - answers4 stages
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questions and solutions
What is homeostasis? - answersThe process of maintaining a stable internal environment
wu wu wu wu wu wu wu wu wu wu wu
Why is homeostasis important? - answersBecause it is essential for the survival of cells
wu wu wu wu wu wu wu wu wu wu wu wu wu
What does the control system do? - answersKeeps the conditions in your body steady
wu wu wu wu wu wu wu wu wu wu wu wu wu
What happens in the blood glucose level is too high? - answersthe control system decreases the level
wu wu wu wu wu wu wu wu wu wu wu wu wu wu wu wu
What happens in the blood glucose level is too low? - answersthe control system increases the level
wu wu wu wu wu wu wu wu wu wu wu wu wu wu wu wu
What does the nervous system mean? - answersthat humans react to their surroundings and coordinate their
wu wu wu wu wu wu wu wu wu wu wu wu wu wu wu
behaviour
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What does the Central Nervous System (CNS) consist of? - answersbrain and spinal cord
wu wu wu wu wu wu wu wu wu wu wu wu wu
What is the CNS connected to? - answersthe body by sensory neurones and motor neutrons
wu wu wu wu wu wu wu wu wu wu wu wu wu wu
What is do Sensory Neurones do? - answersThey carry information as electrical impulses from the receptor to the
wu wu wu wu wu wu wu wu wu wu wu wu wu wu wu wu wu
CNS
wu
What do Motor Neutrons do? - answersThey carry electrical impulses from the CNS to effectors
wu wu wu wu wu wu wu wu wu wu wu wu wu wu
What are Receptors? - answersCells that detect stimuli
wu wu wu wu wu wu wu
Give an example of a receptor - answersReceptors in the ear detect sound
wu wu wu wu wu wu wu wu wu wu wu wu
What do Effectors responded to? - answersElectrical impulses and bring about to a change
wu wu wu wu wu wu wu wu wu wu wu wu wu
Give 2 examples of effectors - answersMuscles and glands.
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What is the process of CNS? - answersStimulus -> Receptor -> Sensory Neurone -> CNS -> Motor Neurone ->
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Effector -> Response
wu wu wu
What is a Synapse? - answersit is where two neurones join together
wu wu wu wu wu wu wu wu wu wu wu
What are Reflexes? - answersan automatic responses to prevent injury
wu wu wu wu wu wu wu wu wu
What are hormones? - answersChemical messengers sent in the blood
wu wu wu wu wu wu wu wu wu
What is another name for the Pituitary Gland? - answersMaster Gland
wu wu wu wu wu wu wu wu wu wu
, What does the Pituitary Gland produce? - answersmany hormones that regulate body conditions
wu wu wu wu wu wu wu wu wu wu wu wu
What do Ovaries produce? - answersoestrogen
wu wu wu wu wu
What is oestrogen involved in? - answersMenstrual cycle
wu wu wu wu wu wu wu
What do the testes produce? - answerstestosterone
wu wu wu wu wu wu
What do the testes control? - answerspuberty and sperm production in men
wu wu wu wu wu wu wu wu wu wu wu
What does the thyroid produce? - answersThyroxine
wu wu wu wu wu wu
What is Thyroxine involved in? - answersRate of metabolism
wu wu wu wu wu wu wu wu
heart rate wu wu
temperature
What does the Adrenal Gland produce? - answersAdrenaline
wu wu wu wu wu wu wu
What is Adrenaline involved in? - answersPrepare the body for a fight or flight response
wu wu wu wu wu wu wu wu wu wu wu wu wu wu
What does the pancreas produce? - answersinsulin
wu wu wu wu wu wu
What is Insulin used i? - answersRegulating the blood glucose level.
wu wu wu wu wu wu wu wu wu wu
Give 3 characteristics of nerves - answersVery fast action
wu wu wu wu wu wu wu wu
Act for a short time
wu wu wu wu
Act on a very precise
wu wu wu wu
Give 3 characteristics of hormones - answersSlower action
wu wu wu wu wu wu wu
Act for a long time
wu wu wu wu
Act in a more general way
wu wu wu wu wu
What is Insulin used for? - answersReducing blood glucose levels
wu wu wu wu wu wu wu wu wu
How many types of diabetes are there ? - answers2
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What happens in type 1 diabetes? - answersThe pancreas produces little or no insulin
wu wu wu wu wu wu wu wu wu wu wu wu wu
How do you treat Diabetes type 1? - answersNeed injections of insulin throughout the day
wu wu wu wu wu wu wu wu wu wu wu wu wu wu
What is type 2 diabetes? - answersWhere a person becomes resistant to their own insulin
wu wu wu wu wu wu wu wu wu wu wu wu wu wu
What can type 2 diabetes be influenced by? - answersa person's lifestyle choices
wu wu wu wu wu wu wu wu wu wu wu wu
How do you treat Diabetes type 2? - answerseating a carbohydrate -controlled diet and doing controlled regular
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exercise
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How many different stages are there in a Menstrual Cycle? - answers4 stages
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