Paper 2 AQA GCSE Biology TEST BANK EXAM LATEST WITH
ACTUAL QUESTIONS AND CORRECT VERIFIED ANSWERS
ALREADY GRADED A+ 100% GUARANTEED PASS LATEST
UPDATE 2026-2027\University of Portsmouth
What is a motor neurone?
Neurones that carry information from the CNS to the effectors.
What is the nervous system?
It is a system that allows you to react to your surroundings.
How do signals travel across a synapse?
The chemical or neurotransmitter diffuses across the synapse and binds to
a
complementary receptor on the neurone (postsynaptic). This causes an
electrical impulse to travel down the next neurone.
,What is a synapse?
A gap between two neurones.
What is the thermoregulatory centre of the brain?
Near the hypothalamus, monitors the temperature of blood.
,Describe the stages in a reflex arc.
Stimulus->Receptor->sensory neurone->CNS (relay neurone) -> motor
neurone -> effector -> response
Name responses that reduce body temperature.
Hairs lie flat, sweat and blood vessels get wider(vasodilation)
What happens during vasodilation?
The blood vessels supplying the skin dilate (widen). This helps to
transfer energy to the environment.
Name responses that increase body temperature.
Hairs stand up, no sweat, shivering and blood vessels
constrict(vasoconstriction)
, What happens during vasoconstriction?
The blood vessels supplying the skin constrict to close off the skins
blood supply.
What is the body's core temp?
37 degrees Celsius
What are hormones?
Chemical messengers that travel in the blood to target organs.
Compare and Contrast the endocrine (hormone) system and the nervous
system.
Nervous is faster acting than the endocrine system.
Hormones have longer lasting effects compared to electrical impulses.
Nerves act on a very specific area whereas hormones act more
general.
ACTUAL QUESTIONS AND CORRECT VERIFIED ANSWERS
ALREADY GRADED A+ 100% GUARANTEED PASS LATEST
UPDATE 2026-2027\University of Portsmouth
What is a motor neurone?
Neurones that carry information from the CNS to the effectors.
What is the nervous system?
It is a system that allows you to react to your surroundings.
How do signals travel across a synapse?
The chemical or neurotransmitter diffuses across the synapse and binds to
a
complementary receptor on the neurone (postsynaptic). This causes an
electrical impulse to travel down the next neurone.
,What is a synapse?
A gap between two neurones.
What is the thermoregulatory centre of the brain?
Near the hypothalamus, monitors the temperature of blood.
,Describe the stages in a reflex arc.
Stimulus->Receptor->sensory neurone->CNS (relay neurone) -> motor
neurone -> effector -> response
Name responses that reduce body temperature.
Hairs lie flat, sweat and blood vessels get wider(vasodilation)
What happens during vasodilation?
The blood vessels supplying the skin dilate (widen). This helps to
transfer energy to the environment.
Name responses that increase body temperature.
Hairs stand up, no sweat, shivering and blood vessels
constrict(vasoconstriction)
, What happens during vasoconstriction?
The blood vessels supplying the skin constrict to close off the skins
blood supply.
What is the body's core temp?
37 degrees Celsius
What are hormones?
Chemical messengers that travel in the blood to target organs.
Compare and Contrast the endocrine (hormone) system and the nervous
system.
Nervous is faster acting than the endocrine system.
Hormones have longer lasting effects compared to electrical impulses.
Nerves act on a very specific area whereas hormones act more
general.
