1. Tabs mean corrections. Do not remove.
Fill in your pink sheets and make corrections in red pen.
Punctuation—Go back and correct any mistakes
Spelling—Highlighted words need to be written out correctly at least five times in the back of your book (use a dictionary to help)
Punctuation—Go back and correct any mistakes
Spelling—Highlighted words need to be written out correctly at least five times in the back of your book (use a dictionary to help)

2. Topic 2 Revision How many lessons do we have left?12 11 1 10
Wednesday, 28 November 2018Wednesday, 28 November 2018 2
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Topic 2 Revision
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How many lessons do we have left?
Have you started revising seriously?

3. What do I need to revise? Topic 2 Thermoregulation
Glucoregulation and diabetes
The nervous system
Responses and reflexes
Plant growth hormones and commercial uses
Investigating plant responses

4. Numbers 1 to 10 in your books…
Starter:
QUICK QUIZ
Numbers 1 to 10 in your books…

5. 1. Name 3 conditions controlled by negative feedback.
Starter:
1. Name 3 conditions controlled by negative feedback.

6. Starter:
2. What is a hormone?

7. 3. What are the 2 parts of the CNS?
Starter:
3. What are the 2 parts of the CNS?

8. Starter:
4. Name the 5 senses.

9. 5. What is the stimulus for phototropism?
Starter:
5. What is the stimulus for phototropism?

10. Starter:
6. Name a plant hormone.

11. 7. Name a use for plant hormones.
Starter:
7. Name a use for plant hormones.

12. 8. What releases insulin and glucagon?
Starter:
8. What releases insulin and glucagon?

13. Starter:
9. What is diabetes?

14. 10. Name one condition controlled by negative feedback.
Starter:
10. Name one condition controlled by negative feedback.

16. What is normal body temperature? 37°C
Name 3 conditions controlled by negative feedback.
Body temp., water/glucose in blood.
Which part of the brain controls body temperature?
Hypothalamus
What is normal body temperature?
37°C
State 3 things which lower body temperature.
Sweating, hairs lie flat, vasodilation
State 3 things which raise body temperature?
Shivering, hairs on end, vasoconstriction
How does sweating cool you down?
Evaporates, taking heat with it
Why do hairs lie flat when you’re hot?
Prevent a layer of insulating air being trapped
Define vasodilation.
Blood vessels widen, more blood flow to skin, more radiation of heat
How does shivering warm you up?
Muscle contractions release heat
Why do hairs stand on end when you’re cold?
Traps layer of insulating air to reduce conduction
Define vasoconstriction.
Blood vessels narrow, less blood flow to skin, less radiation of heat
What is a hormone?
Chemical messenger in the blood
What release hormones?
Glands
How are hormones carried?
In blood
Are hormone effects long or short-term?
Long
What is a neurone?
Cell which transmits information as electrical signals around body
What is the function of the myelin sheath?
Insulate, maintain/speed up impulse
What is a synapse?
Gap between 2 neurones

17. What are released across a synapse? Neurotransmitters
Name 3 types of neurones.
Sensory, motor, relay
Are nerve actions long or short-term?
Short-term
How is information carried in the neurone?
As electrical impulses
State 5 senses.
Sight, touch, smell, hearing, taste
What is a receptor?
Detects change in environment
What is a stimulus?
Change in the environment
What is an effector?
Something which carries out the response
What are the two parts of the CNS?
Brain and spinal chord
What is the function of a sensory neurone?
Carries impulse from receptor to CNS
What is the function of a relay neurone?
Carries impulses within the CNS
What is the function of the motor neurone?
Carries impulses from the CNS to the effector
What is the function of the reflex arc?
Prevent/reduce harm
Is a reflex voluntary or involuntary?
Involuntary
Which gland controls blood glucose levels?
Pancreas
Which hormone lowers blood glucose?
Insulin
Which hormone raises blood glucose?
Glucagon
What is glycogen?
Store of glucose

18. What organ do insulin and glucagon act on? Liver
Where is glycogen found?
What is diabetes?
Lack or resistance to insulin
How can diabetes be treated?
Diet, exercise, medication
Define tropism.
A plant’s growth response
What is the stimulus for phototropism?
Light
What is the stimulus for gravitropism/geotropism?
Gravity
What is a positive tropism?
Growth towards a stimulus
What is a negative tropism?
Growth away from a stimulus
What is the effect of auxin in shoots?
Promotes cell elongation
What is the effect of auxin in roots?
Inhibits cell elongation
How does sunlight affect auxin?
Breaks it down
Name 3 plant hormones.
Auxin, gibberellin, ethylen
Name 2 uses for auxin.
Selective weedkillers, rooting powder
What type of plant is targeted by selective weedkillers?
Broad leaf
State 2 uses of gibberellin.
Selective weedkillers, seedless fruit
State a use of ethylene.
Fruit ripening
What is the effect of gibberellin on stems?
Promote cell elongation

19. Maintenance of a stable internal environment Increased crop yeild
Define homeostasis.
Maintenance of a stable internal environment
Give one advantage of selective weedkillers.
Increased crop yeild
What is the function of the axon?
Carries the electrical impulse

20. (Whiteboard quiz based on the questions which most pupils got wrong)
Plenary:
(Whiteboard quiz based on the questions which most pupils got wrong)