AQA GCSE Combined Science Biology -
Paper 2
What is homeostasis? - ANS -The process of maintaining a stable internal environment
Why is homeostasis important? - ANS -Because it is essential for the survival of cells
What does the control system do? - ANS -Keeps the conditions in your body steady
What happens if the blood glucose level is too high? - ANS -the control system decreases the
level
What happens in the blood glucose level is too low? - ANS -the control system increases the
level
What does the nervous system mean? - ANS -that humans react to their surroundings and
coordinate their behaviour
What does the Central Nervous System (CNS) consist of? - ANS -brain and spinal cord
What is the CNS connected to? - ANS -the body by sensory neurones and motor neutrons
What is do Sensory Neurones do? - ANS -They carry information as electrical impulses from
the receptor to the CNS
What do Motor Neutrons do? - ANS -They carry electrical impulses from the CNS to effectors
What are Receptors? - ANS -Cells that detect stimuli
Give an example of a receptor - ANS -Receptors in the ear detect sound
What do Effectors responded to? - ANS -Electrical impulses and bring about to a change
Give 2 examples of effectors - ANS -Muscles and glands.
What is the process of CNS? - ANS -Stimulus -> Receptor -> Sensory Neurone -> CNS ->
Motor Neurone -> Effector -> Response
What is a Synapse? - ANS -it is where two neurones join together
, What are Reflexes? - ANS -an automatic responses to prevent injury
What are hormones? - ANS -Chemical messengers sent in the blood
What is another name for the Pituitary Gland? - ANS -Master Gland
What does the Pituitary Gland produce? - ANS -many hormones that regulate body conditions
What do Ovaries produce? - ANS -oestrogen
What is oestrogen involved in? - ANS -Menstrual cycle
What do the testes produce? - ANS -testosterone
What do the testes control? - ANS -puberty and sperm production in men
What does the thyroid produce? - ANS -Thyroxine
What is Thyroxine involved in? - ANS -Rate of metabolism
heart rate
temperature
What does the Adrenal Gland produce? - ANS -Adrenaline
What is Adrenaline involved in? - ANS -Prepare the body for a fight or flight response
What does the pancreas produce? - ANS -insulin
What is Insulin used i? - ANS -Regulating the blood glucose level.
Give 3 characteristics of nerves - ANS -Very fast action
Act for a short time
Act on a very precise
Give 3 characteristics of hormones - ANS -Slower action
Act for a long time
Act in a more general way
What is Insulin used for? - ANS -Reducing blood glucose levels
How many types of diabetes are there ? - ANS -2
What happens in type 1 diabetes? - ANS -The pancreas produces little or no insulin
Paper 2
What is homeostasis? - ANS -The process of maintaining a stable internal environment
Why is homeostasis important? - ANS -Because it is essential for the survival of cells
What does the control system do? - ANS -Keeps the conditions in your body steady
What happens if the blood glucose level is too high? - ANS -the control system decreases the
level
What happens in the blood glucose level is too low? - ANS -the control system increases the
level
What does the nervous system mean? - ANS -that humans react to their surroundings and
coordinate their behaviour
What does the Central Nervous System (CNS) consist of? - ANS -brain and spinal cord
What is the CNS connected to? - ANS -the body by sensory neurones and motor neutrons
What is do Sensory Neurones do? - ANS -They carry information as electrical impulses from
the receptor to the CNS
What do Motor Neutrons do? - ANS -They carry electrical impulses from the CNS to effectors
What are Receptors? - ANS -Cells that detect stimuli
Give an example of a receptor - ANS -Receptors in the ear detect sound
What do Effectors responded to? - ANS -Electrical impulses and bring about to a change
Give 2 examples of effectors - ANS -Muscles and glands.
What is the process of CNS? - ANS -Stimulus -> Receptor -> Sensory Neurone -> CNS ->
Motor Neurone -> Effector -> Response
What is a Synapse? - ANS -it is where two neurones join together
, What are Reflexes? - ANS -an automatic responses to prevent injury
What are hormones? - ANS -Chemical messengers sent in the blood
What is another name for the Pituitary Gland? - ANS -Master Gland
What does the Pituitary Gland produce? - ANS -many hormones that regulate body conditions
What do Ovaries produce? - ANS -oestrogen
What is oestrogen involved in? - ANS -Menstrual cycle
What do the testes produce? - ANS -testosterone
What do the testes control? - ANS -puberty and sperm production in men
What does the thyroid produce? - ANS -Thyroxine
What is Thyroxine involved in? - ANS -Rate of metabolism
heart rate
temperature
What does the Adrenal Gland produce? - ANS -Adrenaline
What is Adrenaline involved in? - ANS -Prepare the body for a fight or flight response
What does the pancreas produce? - ANS -insulin
What is Insulin used i? - ANS -Regulating the blood glucose level.
Give 3 characteristics of nerves - ANS -Very fast action
Act for a short time
Act on a very precise
Give 3 characteristics of hormones - ANS -Slower action
Act for a long time
Act in a more general way
What is Insulin used for? - ANS -Reducing blood glucose levels
How many types of diabetes are there ? - ANS -2
What happens in type 1 diabetes? - ANS -The pancreas produces little or no insulin
