2939158
Pregunta 1
Pregunta
In which order does the signal for the reflex arc travel?
Respuesta
-
RELAY NEURONE to SPINAL CORD to SENSORY NEURONE
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SENSORY NEURONE to SPINAL CORD to MOTOR NEURONE
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SPINAL CORD to SENSORY NEURONE to STIMULUS
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STIMULUS to MOTOR NEURONE to SPINAL CORD
Pregunta 2
Pregunta
In the lighting circuit in a house, how are lamps usually connected, and what is one reason for this?
Respuesta
-
PARALLEL - to allow every lamp to have the full voltage supply
-
PARALLEL - to share out the voltage equally between the lamps
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SERIES - to allow every lamp to have the full voltage supply
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SERIES - to share out the voltage equally between the lamps
Pregunta 3
Pregunta
When the voltage of the supply is reduced, the voltage across the resistor decreases
Respuesta
- True
- False
Pregunta 4
Pregunta
What factors can effect the resistance of a piece of wire?
Respuesta
-
temperature of the wire
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material of the wire
-
thickness of the wire
-
length of the wire
-
where the wire is located
Pregunta 5
Pregunta
When the eye is focusing on a nearby object:-
Structure 6 ([blank_start]the suspensory ligaments[blank_end]) will [blank_start]relax[blank_end], allowing for more light to [blank_start]be refracted[blank_end] into the eye. Then structure 8 ([blank_start]The cilliary muscles[blank_end]) [blank_start]contract[blank_end]
Respuesta
-
the suspensory ligaments
-
the optic nerve
-
the retina
-
the iris
-
the cilliary muscles
-
relax
-
be refracted
-
not be enetered
-
enter
-
The cilliary muscles
-
the pupil
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the cornea
-
the lens
-
contract
Pregunta 6
Pregunta
The change in blood glucose concentration can be detected by organ A. If it releases hormone B into the blood, hormone B will convert glucose to glycogen and the concentration of glucose in the blood will decrease. If it releases hormone C into the blood, hormone C will stimulate organ D to convert glycogen to glucose and the blood glucose concentration will increase.
NAME ORGAN A AND HORMONES B AND C
Respuesta
-
Organ A - PANCREAS Hormone B - GLYCOGEN Hormone C - INSULIN
-
Organ A - PANCREAS Hormone B - INSULIN Hormone C - GLYCOGEN
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Organ A - LIVER Hormone B - GLYCOGEN Hormone C - INSULIN
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Organ A - LIVER Hormone B - INSULIN Hormone C - GLYCOGEN
Pregunta 7
Pregunta
Why is glucose converted to glycogen rather than just kept as glucose in the cells
Respuesta
-
glycogen takes up less space and can therefore be stored more easily
-
glycogen is easier to digest and can therefore speed up digestion
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glycogen is insoluble and is therefore not in danger of osmosis
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glucose is bad for the human body and must therefore always be converted into glycogen
Pregunta 8
Pregunta
LABEL THE NEURONES IN THE REFLEX ARC DIAGRAM
Respuesta
-
sensory neurone
-
relay neurone
-
motor neurone
Pregunta 9
Pregunta
What is the receptor of pressure and temperature detected in the environment?
Respuesta
-
Toungue
-
Skin
-
Eye
-
Nose
-
Ear
Pregunta 10
Pregunta
LABEL THE EYE DIAGRAM
give answers without the (ex. tree - correct ex. the tree - incorrect)
Respuesta
-
iris
-
lens
-
suspensory ligaments
-
optic nerve
-
retina
-
cornea
Pregunta 11
Pregunta
In bright light the radial muscles of the iris [blank_start]____[blank_end] and the circular muscles of the iris [blank_start]_____[blank_end]
Respuesta
-
relax
-
contract
Pregunta 12
Pregunta
The suspensory ligaments...
Respuesta
-
controls the amount of light entering the eye
-
pulls the lens for focusing
-
holds the lens in place
Pregunta 13
Pregunta
[blank_start]_________[blank_end]glands have a gland
Respuesta
-
exocrine
Pregunta 14
Pregunta
[blank_start]______[blank_end] glands are found at the base of the brain, produce hormones and are linked by hypothalamuses to the brain
Respuesta
-
Pituitary
Pregunta 15
Pregunta
The pancreas is...
Respuesta
-
endocrine
-
exocrine
-
both endocrine and exocrine
-
neither endocrine nor exocrine
Pregunta 16
Pregunta
When adrenaline is secreted into the blood...
Respuesta
-
Pupils dilate
-
heart race increases
-
glycogen is released from the liver
-
blood is directed to the gut and away from the liver
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breathing becomes deeper
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breathing becomes faster
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hairs stand on end
Pregunta 17
Pregunta
The body must be kept at a constant temperature of [blank_start]___[blank_end] degrees celcius
Respuesta
-
37
Pregunta 18
Pregunta
Name the respons(es) that the body has in reaction to a decrease in temperature
Respuesta
-
sweating
-
vascodilation
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shivering
-
vascoconstriction
Pregunta 19
Pregunta
What happens when enzymes are in a too cold environment
Respuesta
-
They denature
-
They work to slow
-
They freeze and die
-
They escape to be in a warmer environment
Pregunta 20
Pregunta
homeostasis is the maintenance of a constant internal environment
Respuesta
- True
- False
Pregunta 21
Pregunta
The cilliary muscles..
Respuesta
-
pull the light in for focusing
-
control the amount of light entering the eye
-
hold the lens in place
Pregunta 22
Pregunta
The cornea
Respuesta
-
is a light sensitive layer, sends signals to the optic nerve
-
lets light into the eye and focuses
-
focuses light onto the retina
Pregunta 23
Pregunta
The iris
Respuesta
-
controls the amount of light entering the eye
-
is a light sensitive layer, sends signals to the optic nerve
-
focuses light onto the retina
Pregunta 24
Pregunta
The optic nerve
Respuesta
-
sends signals to the brain
-
pulls the lens for focusing
-
controls the amount of light entering the eye
Pregunta 25
Pregunta
The pupil...
Respuesta
-
lets light through to the lens
-
controls the amount of light entering the eye
-
lets light into the eye and focuses
Pregunta 26
Pregunta
The retina
Respuesta
-
light sensitive layer, sends signals to the optic nerve
-
lets light into the eye and focuses
-
controls the amount of light entering the eye
Pregunta 27
Pregunta
which two parts of the eye work together to focus on objects
Respuesta
-
cornea and lens
-
pupil and lens
-
retina and lens
-
iris and lens
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