All

Question 1

Kinesis

Answer 1

Random movement
Less directional stimulus
More unpleasant stimulus

Question 2

Tropism

Answer 2

Growth movement of plant

Question 3

Reflex arc

Answer 3

Detects stimulus 
Generates impulse
Sensory neurone-> CNS
Synapse w/ relay neurone 
Synapse w/motor neurone 
Impulse to effector
Creates response

Question 4

Sympathetic nervous system

Answer 4

Stimulates effectors
Speeds up activity
Emergency controller
Fight or flight

Question 5

Parasympathetic

Answer 5

Inhibits effectors
Conserves energy
Slows activity
Normal resting conditions

Question 6

Chemoreceptors

Answer 6

Found : wall of catorid arteries

Sensitive to changes in pH of blood from changes in carbon dioxide concentration

Question 7

Chemoreceptors process

Answer 7

1- increased concentration of carbon dioxide. PH is lowered
2-chemoreceptors detect and increase frequency of nervous impulse to medulla oblongata = increased heart rate
3- increase in impulses by sympathetic NS -> sinoatrial node

Question 8

Pacinian corpuscle

Answer 8

1-RESTING POTENTIAL - no sodium movement
2-PRESSURE APPLIED - changes shape. Membrane stretches
3-SODIUM CHANNEL WIDENED- sodium ion diffuses -> neurone
4-INFLUX OF SODIUM - changes potential -> depolarised = generator potential
5-ACTION POTENTIAL - sent to CNS

Question 9

Rod cells

Answer 9

Black and white 
Don't distinguish wave length
More
Response at low light intensities 
Low visual acuity 
Concentrated at periphery

Question 10

Cone cells

Answer 10

Colour 
Less
Response at high light intensities 
Good visual acuity
Cone shape
Concentrated at fovea

Question 11

Taxes

Answer 11

Simple response
Direct response
Plants and animals
Determined by direction of stimulus