AQA GCSE Combined Science Biology -
Paper 2 2024/2025 Exam Questions and
Answers | A+ Score Assured
What is homeostasis? - 🧠 ANSWER ✔✔The process of maintaining a
stable internal environment
Why is homeostasis important? - 🧠 ANSWER ✔✔Because it is essential for
the survival of cells
What does the control system do? - 🧠 ANSWER ✔✔Keeps the conditions
in your body steady
What happens in the blood glucose level is too high? - 🧠 ANSWER ✔✔the
control system decreases the level
What happens in the blood glucose level is too low? - 🧠 ANSWER ✔✔the
control system increases the level
What does the nervous system mean? - 🧠 ANSWER ✔✔that humans react
to their surroundings and coordinate their behaviour
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STATEMENT. ALL RIGHTS RESERVED
,What does the Central Nervous System (CNS) consist of? - 🧠 ANSWER
✔✔brain and spinal cord
What is the CNS connected to? - 🧠 ANSWER ✔✔the body by sensory
neurones and motor neutrons
What is do Sensory Neurones do? - 🧠 ANSWER ✔✔They carry information
as electrical impulses from the receptor to the CNS
What do Motor Neutrons do? - 🧠 ANSWER ✔✔They carry electrical
impulses from the CNS to effectors
What are Receptors? - 🧠 ANSWER ✔✔Cells that detect stimuli
Give an example of a receptor - 🧠 ANSWER ✔✔Receptors in the ear
detect sound
What do Effectors responded to? - 🧠 ANSWER ✔✔Electrical impulses and
bring about to a change
Give 2 examples of effectors - 🧠 ANSWER ✔✔Muscles and glands.
What is the process of CNS? - 🧠 ANSWER ✔✔Stimulus -> Receptor ->
Sensory Neurone -> CNS -> Motor Neurone -> Effector -> Response
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED
, What is a Synapse? - 🧠 ANSWER ✔✔it is where two neurones join
together
What are Reflexes? - 🧠 ANSWER ✔✔an automatic responses to prevent
injury
What are hormones? - 🧠 ANSWER ✔✔Chemical messengers sent in the
blood
What is another name for the Pituitary Gland? - 🧠 ANSWER ✔✔Master
Gland
What does the Pituitary Gland produce? - 🧠 ANSWER ✔✔many hormones
that regulate body conditions
What do Ovaries produce? - 🧠 ANSWER ✔✔oestrogen
What is oestrogen involved in? - 🧠 ANSWER ✔✔Menstrual cycle
What do the testes produce? - 🧠 ANSWER ✔✔testosterone
What do the testes control? - 🧠 ANSWER ✔✔puberty and sperm
production in men
What does the thyroid produce? - 🧠 ANSWER ✔✔Thyroxine
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED
Paper 2 2024/2025 Exam Questions and
Answers | A+ Score Assured
What is homeostasis? - 🧠 ANSWER ✔✔The process of maintaining a
stable internal environment
Why is homeostasis important? - 🧠 ANSWER ✔✔Because it is essential for
the survival of cells
What does the control system do? - 🧠 ANSWER ✔✔Keeps the conditions
in your body steady
What happens in the blood glucose level is too high? - 🧠 ANSWER ✔✔the
control system decreases the level
What happens in the blood glucose level is too low? - 🧠 ANSWER ✔✔the
control system increases the level
What does the nervous system mean? - 🧠 ANSWER ✔✔that humans react
to their surroundings and coordinate their behaviour
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
1
STATEMENT. ALL RIGHTS RESERVED
,What does the Central Nervous System (CNS) consist of? - 🧠 ANSWER
✔✔brain and spinal cord
What is the CNS connected to? - 🧠 ANSWER ✔✔the body by sensory
neurones and motor neutrons
What is do Sensory Neurones do? - 🧠 ANSWER ✔✔They carry information
as electrical impulses from the receptor to the CNS
What do Motor Neutrons do? - 🧠 ANSWER ✔✔They carry electrical
impulses from the CNS to effectors
What are Receptors? - 🧠 ANSWER ✔✔Cells that detect stimuli
Give an example of a receptor - 🧠 ANSWER ✔✔Receptors in the ear
detect sound
What do Effectors responded to? - 🧠 ANSWER ✔✔Electrical impulses and
bring about to a change
Give 2 examples of effectors - 🧠 ANSWER ✔✔Muscles and glands.
What is the process of CNS? - 🧠 ANSWER ✔✔Stimulus -> Receptor ->
Sensory Neurone -> CNS -> Motor Neurone -> Effector -> Response
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
2
STATEMENT. ALL RIGHTS RESERVED
, What is a Synapse? - 🧠 ANSWER ✔✔it is where two neurones join
together
What are Reflexes? - 🧠 ANSWER ✔✔an automatic responses to prevent
injury
What are hormones? - 🧠 ANSWER ✔✔Chemical messengers sent in the
blood
What is another name for the Pituitary Gland? - 🧠 ANSWER ✔✔Master
Gland
What does the Pituitary Gland produce? - 🧠 ANSWER ✔✔many hormones
that regulate body conditions
What do Ovaries produce? - 🧠 ANSWER ✔✔oestrogen
What is oestrogen involved in? - 🧠 ANSWER ✔✔Menstrual cycle
What do the testes produce? - 🧠 ANSWER ✔✔testosterone
What do the testes control? - 🧠 ANSWER ✔✔puberty and sperm
production in men
What does the thyroid produce? - 🧠 ANSWER ✔✔Thyroxine
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
3
STATEMENT. ALL RIGHTS RESERVED
