AQA GCSE Biology Paper 2 Actual Exam Questions with Verified
Answers 2025 Latest Update
The maintenance of a constant internal environment.
1. What is home-
ostasis?
ANSWER>> A change in your environment than requires a response.
e.g Light, sound, touch, pressure, pain, chemical or tem-
2. What is a stimu-
lus? perature.
ANSWER>> Detect the stimulus or change in environment.
3. What do the re- Receptors send messages to the CNS via the sensory
ceptors do? neurone.
ANSWER>>
4. What happens The brain or spinal cord
after the recep-
tors?
ANSWER>>
5. What makes up
the central ner-
vous system?
ANSWER>> Muscles or glands that bring about a response.
6. What is an effec-
tor? ANSWER>>
7. What do the mus- Muscles contract and glands secrete chemical sub-
cles and glands
do in response to 8. What is a senso- ry neurone? ANSWER>>
stimuli?
ANSWER>>
, AQA GCSE Biology Paper 2 Actual Exam Questions with Verified
Answers 2025 Latest Update
stances(hormones).
A neurone that carry
information from the
receptors to the CNS.
, AQA GCSE Biology Paper 2 Actual Exam Questions with Verified
Answers 2025 Latest Update
9. What is a relay Neurones that carry impulses from the sensory neurone
neurone? to the motor neurone.
ANSWER>>
Neurones that carry information from the CNS to the
10. What is a motor effectors.
neurone?
ANSWER>>
It is a system that allows you to react to your surroundings.
11. What is the ner-
vous system? The chemical or neurotransmitter diffuses across the
ANSWER>> synapse and binds to a complementary receptor on the
neurone (postsynaptic). This causes an electrical impulse
12. How do signals to travel down the next neurone.
travel across a
synapse?
ANSWER>>
A gap between two neurones.
13. What is a
synapse?
ANSWER>>
, AQA GCSE Biology Paper 2 Actual Exam Questions with Verified
Answers 2025 Latest Update
14. What is ANSWER>>
the thermoregu-
latory centre of 21. What are hor- mones? ANSWER>>
the brain?
ANSWER>>
15. Describe the
stages in a reflex
arc.
16. Name responses
that reduce body
temperature.
17. What happens
during vasodila-
tion?
ANSWER>>
18. Name respons-
es that increase
body tempera-
ture.
19. What happens
during vasocon-
striction?
ANSWER>>
20. What is the
body's core
temp?
Answers 2025 Latest Update
The maintenance of a constant internal environment.
1. What is home-
ostasis?
ANSWER>> A change in your environment than requires a response.
e.g Light, sound, touch, pressure, pain, chemical or tem-
2. What is a stimu-
lus? perature.
ANSWER>> Detect the stimulus or change in environment.
3. What do the re- Receptors send messages to the CNS via the sensory
ceptors do? neurone.
ANSWER>>
4. What happens The brain or spinal cord
after the recep-
tors?
ANSWER>>
5. What makes up
the central ner-
vous system?
ANSWER>> Muscles or glands that bring about a response.
6. What is an effec-
tor? ANSWER>>
7. What do the mus- Muscles contract and glands secrete chemical sub-
cles and glands
do in response to 8. What is a senso- ry neurone? ANSWER>>
stimuli?
ANSWER>>
, AQA GCSE Biology Paper 2 Actual Exam Questions with Verified
Answers 2025 Latest Update
stances(hormones).
A neurone that carry
information from the
receptors to the CNS.
, AQA GCSE Biology Paper 2 Actual Exam Questions with Verified
Answers 2025 Latest Update
9. What is a relay Neurones that carry impulses from the sensory neurone
neurone? to the motor neurone.
ANSWER>>
Neurones that carry information from the CNS to the
10. What is a motor effectors.
neurone?
ANSWER>>
It is a system that allows you to react to your surroundings.
11. What is the ner-
vous system? The chemical or neurotransmitter diffuses across the
ANSWER>> synapse and binds to a complementary receptor on the
neurone (postsynaptic). This causes an electrical impulse
12. How do signals to travel down the next neurone.
travel across a
synapse?
ANSWER>>
A gap between two neurones.
13. What is a
synapse?
ANSWER>>
, AQA GCSE Biology Paper 2 Actual Exam Questions with Verified
Answers 2025 Latest Update
14. What is ANSWER>>
the thermoregu-
latory centre of 21. What are hor- mones? ANSWER>>
the brain?
ANSWER>>
15. Describe the
stages in a reflex
arc.
16. Name responses
that reduce body
temperature.
17. What happens
during vasodila-
tion?
ANSWER>>
18. Name respons-
es that increase
body tempera-
ture.
19. What happens
during vasocon-
striction?
ANSWER>>
20. What is the
body's core
temp?
