AQA GCSE Combined Science Biology -
Paper 2 Questions with Answers
1. What is homeostasis? - Correct Answer The process of maintaining a stable
internal environment
2. Why is homeostasis important? - Correct Answer Because it is essential for the
survival of cells
3. What does the control system do? - Correct Answer Keeps the conditions in
your body steady
4. What happens in the blood glucose level is too high? - Correct Answer the
control system decreases the level
5. What happens in the blood glucose level is too low? - Correct Answer the
control system increases the level
6. What does the nervous system mean? - Correct Answer that humans react to
their surroundings and coordinate their behavior
7. What does the Central Nervous System (CNS) consist of? - Correct Answer
brain and spinal cord
8. What is the CNS connected to? - Correct Answer the body by sensory neurons
and motor neutrons
9. What is do Sensory Neurons do? - Correct Answer They carry information as
electrical impulses from the receptor to the CNS
10. What do Motor Neutrons do? - Correct Answer They carry electrical impulses
from the CNS to effectors
11. What are Receptors? - Correct Answer Cells that detect stimuli
12. Give an example of a receptor - Correct Answer Receptors in the ear detect
sound
13. What do Effectors responded to? - Correct Answer Electrical impulses and bring
about to a change
14. Give 2 examples of effectors - Correct Answer Muscles and glands.
, 15. What is the process of CNS? - Correct Answer Stimulus -> Receptor -> Sensory
Neuron -> CNS -> Motor Neuron -> Effector -> Response
16. What is a Synapse? - Correct Answer it is where two neurons join together
17. What are Reflexes? - Correct Answer an automatic responses to prevent injury
18. What are hormones? - Correct Answer Chemical messengers sent in the blood
19. What is another name for the Pituitary Gland? - Correct Answer Master Gland
20. What does the Pituitary Gland produce? - Correct Answer many hormones that
regulate body conditions
21. What do Ovaries produce? - Correct Answer estrogen
22. What is estrogen involved in? - Correct Answer Menstrual cycle
23. What do the testes produce? - Correct Answer testosterone
24. What do the testes control? - Correct Answer puberty and sperm production in
men
25. What does the thyroid produce? - Correct Answer Thyroxin
26. What is Thyroxin involved in? - Correct Answer Rate of metabolism
27. heart rate
28. temperature
29. What does the Adrenal Gland produce? - Correct Answer Adrenaline
30. What is Adrenaline involved in? - Correct Answer Prepare the body for a fight or
flight response
31. What does the pancreas produce? - Correct Answer insulin
32. What is Insulin used i? - Correct Answer Regulating the blood glucose level.
33. Give 3 characteristics of nerves - Correct Answer Very fast action
34. Act for a short time
35. Act on a very precise
36. Give 3 characteristics of hormones - Correct Answer Slower action
37. Act for a long time
38. Act in a more general way
Paper 2 Questions with Answers
1. What is homeostasis? - Correct Answer The process of maintaining a stable
internal environment
2. Why is homeostasis important? - Correct Answer Because it is essential for the
survival of cells
3. What does the control system do? - Correct Answer Keeps the conditions in
your body steady
4. What happens in the blood glucose level is too high? - Correct Answer the
control system decreases the level
5. What happens in the blood glucose level is too low? - Correct Answer the
control system increases the level
6. What does the nervous system mean? - Correct Answer that humans react to
their surroundings and coordinate their behavior
7. What does the Central Nervous System (CNS) consist of? - Correct Answer
brain and spinal cord
8. What is the CNS connected to? - Correct Answer the body by sensory neurons
and motor neutrons
9. What is do Sensory Neurons do? - Correct Answer They carry information as
electrical impulses from the receptor to the CNS
10. What do Motor Neutrons do? - Correct Answer They carry electrical impulses
from the CNS to effectors
11. What are Receptors? - Correct Answer Cells that detect stimuli
12. Give an example of a receptor - Correct Answer Receptors in the ear detect
sound
13. What do Effectors responded to? - Correct Answer Electrical impulses and bring
about to a change
14. Give 2 examples of effectors - Correct Answer Muscles and glands.
, 15. What is the process of CNS? - Correct Answer Stimulus -> Receptor -> Sensory
Neuron -> CNS -> Motor Neuron -> Effector -> Response
16. What is a Synapse? - Correct Answer it is where two neurons join together
17. What are Reflexes? - Correct Answer an automatic responses to prevent injury
18. What are hormones? - Correct Answer Chemical messengers sent in the blood
19. What is another name for the Pituitary Gland? - Correct Answer Master Gland
20. What does the Pituitary Gland produce? - Correct Answer many hormones that
regulate body conditions
21. What do Ovaries produce? - Correct Answer estrogen
22. What is estrogen involved in? - Correct Answer Menstrual cycle
23. What do the testes produce? - Correct Answer testosterone
24. What do the testes control? - Correct Answer puberty and sperm production in
men
25. What does the thyroid produce? - Correct Answer Thyroxin
26. What is Thyroxin involved in? - Correct Answer Rate of metabolism
27. heart rate
28. temperature
29. What does the Adrenal Gland produce? - Correct Answer Adrenaline
30. What is Adrenaline involved in? - Correct Answer Prepare the body for a fight or
flight response
31. What does the pancreas produce? - Correct Answer insulin
32. What is Insulin used i? - Correct Answer Regulating the blood glucose level.
33. Give 3 characteristics of nerves - Correct Answer Very fast action
34. Act for a short time
35. Act on a very precise
36. Give 3 characteristics of hormones - Correct Answer Slower action
37. Act for a long time
38. Act in a more general way
