BIOLOGICAL SCIENCES EXAM LATEST UPDATES -2025/2026-
ACTUAL QUESTIONS WITH VERIFIED ANSWERS ALREADY
GRADED A+ GUARANTEED PASS
photoreceptors
specialised light-detecting cells, primarily found in the retina of the eye, that
convert light into electrical signals that the brain can interpret as vision
mechanoreceptors
Located in your skin, skeletal muscles and inner ear, these receptors are sensitive
to touch, pressure, sound, motion and muscle movement. They convert these
mechanical forces into electrical signals that the brain can interpret.
what are the 5 receptors?
Thermoreceptors, mechanoreceptors, chemoreceptors, photoreceptors, pain
receptors
chemoreceptors
located in taste buds and the nose, detect changes in the chemical composition of
the blood and send information to the brain to regulate cardiovascular and
respiratory functions
,pain receptors
detect potentially damaging stimuli and transmit signals to the brain, causing the
sensation of pain. They are crucial for alerting the body to injury or threat and
triggering protective responses. Although these receptors are found throughout
the human body, they are not found in the brain.
receptors
chemical structures that receive and convert signals in the body. Each type of
receptor is a different shape as they are specialised to respond to a different
stimulus.
olfactory nerve
the nerve that sends signals to the brain from the chemoreceptors in the nose
iris
a ring of muscle tissue that forms the coloured portion of the eye around the
pupil that opens and closes the pupil to control the amount of light that enters
the eye
pupil
the dark spot in the centre of your eye that is simply the hole through which light
enters the eye
, cornea
the transparent, outermost layer of the eye, acting as a protective shield and
focusing light to the retina.
lens
a clear, curved structure located behind the pupil that focuses light rays onto the
retina, allowing us to see. It acts like a camera lens, bending light to create a sharp
image on the retina. The lens changes shape to focus on objects at different
distances, a process called accommodation.
retina
a layer at the back of the eyeball that contains cells sensitive to light, which
trigger nerve impulses that pass via the optic nerve to the brain, where a visual
image is formed.
cones
photoreceptors located in the retina that respond to red, green or blue light
rods
ACTUAL QUESTIONS WITH VERIFIED ANSWERS ALREADY
GRADED A+ GUARANTEED PASS
photoreceptors
specialised light-detecting cells, primarily found in the retina of the eye, that
convert light into electrical signals that the brain can interpret as vision
mechanoreceptors
Located in your skin, skeletal muscles and inner ear, these receptors are sensitive
to touch, pressure, sound, motion and muscle movement. They convert these
mechanical forces into electrical signals that the brain can interpret.
what are the 5 receptors?
Thermoreceptors, mechanoreceptors, chemoreceptors, photoreceptors, pain
receptors
chemoreceptors
located in taste buds and the nose, detect changes in the chemical composition of
the blood and send information to the brain to regulate cardiovascular and
respiratory functions
,pain receptors
detect potentially damaging stimuli and transmit signals to the brain, causing the
sensation of pain. They are crucial for alerting the body to injury or threat and
triggering protective responses. Although these receptors are found throughout
the human body, they are not found in the brain.
receptors
chemical structures that receive and convert signals in the body. Each type of
receptor is a different shape as they are specialised to respond to a different
stimulus.
olfactory nerve
the nerve that sends signals to the brain from the chemoreceptors in the nose
iris
a ring of muscle tissue that forms the coloured portion of the eye around the
pupil that opens and closes the pupil to control the amount of light that enters
the eye
pupil
the dark spot in the centre of your eye that is simply the hole through which light
enters the eye
, cornea
the transparent, outermost layer of the eye, acting as a protective shield and
focusing light to the retina.
lens
a clear, curved structure located behind the pupil that focuses light rays onto the
retina, allowing us to see. It acts like a camera lens, bending light to create a sharp
image on the retina. The lens changes shape to focus on objects at different
distances, a process called accommodation.
retina
a layer at the back of the eyeball that contains cells sensitive to light, which
trigger nerve impulses that pass via the optic nerve to the brain, where a visual
image is formed.
cones
photoreceptors located in the retina that respond to red, green or blue light
rods
