year10revisionpowerpoint8
TRANSCRIPT
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Miss Fleming’sAmazingly Brilliant Biology Quiz That You Have To Learn For Your Exam!
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InstructionsSelect a number, and try to answer the question that appears on the screen. Try to learn as many as you can for your exam! Keep re-capping each question till you can answer all questions correctly. Make sure your sound is turned up! To exit the PowerPoint, you may have to press escape on your computer a few times… good luck!
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Wrong!Back to Questions
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Wrong!Back to Questions
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Wrong!Back to Questions
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Wrong!Back to Questions
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Wrong!Back to Questions
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Well Done!Back to Questions
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Well Done!Back to Questions
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Well Done!Back to Questions
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Well Done!Back to Questions
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Well Done!Back to Questions
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1. What is the name of the hormone that controls blood sugar levels?
Insulin Glucagon
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2. What does the lens do?
Carry nerve impulses
Focus light rays
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3. What does the optic nerve do?
Carry nerve impulses
React to light
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4. What does the retina do?
Focus the light
React to light
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5. Why is it important for the eye to adjust to bright light?
To prevent damage to the retina
To react to light and
focus
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6.How does the eye accommodate?
lens changes shape using circulatory muscles/ suspensory ligamentsto focus on objects at different distances
lens changes shape using the corneato focus on objects at different distances
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7. Why is poor eye accommodation a problem?
Cannot judge depth so may cause a
person to fall over due to lack of
binocular vision
cannot adjust focus quickly from close to distant objectsbecause of weak muscles/stiff ligaments
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8. How do you treat a blocked coronary artery?
Bypass surgery
Artificial replacement
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9. How do you treat damaged heart valves?
pacemaker Artificial replacement
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10. How does the pacemaker control the heartbeat?
SAN sends or generates impulses causing atria to contract
The pacemaker sends messages of electrical current through the heart
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11. What are the two types of pacemaker cells which control heart rate called?
AVN and SAN AMS and NAV
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12. How does sweating cool the body?
Vapourisation (requires kinetic/ energy)
evaporation (requires heat / energy)
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13. What word describes keeping the body temperature constant?
homeostasis insulation
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14. Breathing and heart rate remain high after exercise to...?
Pump blood full of oxygen
around the body to
oxidise the muscles
Break down lactic acid
after anaerobic respiration
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15. Sweat glands help to control the temperature of the body by…?
Releasing more sweat which evaporates taking heat from skin
Releasing liquid/ plasma as part of a negative feedback
mechanism
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16.Which part of the kidney regulates salt levels?
A: ascending loop of henle
C: glomerulus
AB
C
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17.Which area of the body controls the heart beat?
hypothalamus pacemaker
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18. What hormone can alter heart rate?
adrenaline testosterone
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19. What are the air sacs in the lungs called?
villi alveoli
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20. How does oxygen enter the body?
Diffusion from a high concentration to a low concentration
Diffusion from a low concentration to a high concentration
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21. Why are alveoli thin?
Short diffusion distance
High concentration
gradient
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22. How do you know B and C are arteries?
They carry blood towards the heart
They carry blood away from the heart
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23. Why do ventricles have thicker walls than atria?
Greater force needed/ higher
pressure needed
Less force needed/ smaller
pressure needed
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24. What happens if valves don’t work?
Backflow is prevented
Backflow is not prevented
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25. Why is it an advantage to have two ventricles (instead of one like fish)?
Higher pressure is possible and better flow rate to tissues
Higher pressure is possible and oxygenated and deoxygenated blood is separated
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26. What type of nerve takes signals to the muscles?
Motor neurone
Relay neurone
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27. What type of nerve takes signals away from the skin?
Sensible neurone
Sensory neurone
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28.Why must people be careful with prosthetic (artificial) limbs?
They have no nerves so
can’t feel pain
They have too many nerves
so are in constant pain
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29. What is diffusion?
Particles concentrating so they can move through a net
Net movement of particles from a high concentration to a low concentration
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30. What is the name of the condition when a person’s internal body temperature drops too low?
hypothermia hyperthermia
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31.Why do people look red in the face when they get hot?
Vasodilation of capillaries
Vasoconstriction of capillaries
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32. What part of the brain monitors body temperature?
hypothalamus hyperthermia
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33. How does vasodilation cool the body?
It doesn’t, vasoconstriction cools the body- this is a trick question
Brings blood to the surface of the skin so heat can escape
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34. How is a villus in the small intestine adapted for diffusion of food particles?
Thin wall, large surface
area
Small, good blood supply
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35. Capillaries are better than arteries for diffusion because…?
They are faster at
diffusion and carry more
blood
They are thinner and
there are lots of them
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36. You work out BMI using the following calculation…?
Mass in kg divided by height in metres squared
Height in metres squared divided by
mass in kg
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37.If your BMI is 26, you are?
overweight Just right
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38. Your daily recommended protein intake is known as your?
RDA RPD
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39. Why doesn’t everyone eat animals like chickens etc?
They might choke on the fur or beak
Religion or ethical reasons
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40. What does the cornea do?
Refracts light Reflects light
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41. What is the iris for?
To look nice and colourful
Adjust levels of light
reaching the retina
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42. Why do some people need a lens replacement?
So the focused image lands correctly on their retina
The lenses on their glasses are too dirty
to see through
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43.One way of curing short sight is?
Laser surgery A convex lens
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44. What causes colour blindness?
Genetic/ hereditory
Not being able to tell
the difference between reds
and greens
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45.Name one simple sugar?
starch glucose
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46. What food group do sugars belong to?
carbohydrates
fats
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47. Where does glucose enter the blood stream?
Cilia in the colon
Small intestine
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48. What does insulin do?
Converts glucose to glycogen
Converts glucagon to glycogen
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49.Where does insulin work?
Mostly the liver and muscles
Mostly the pancreas and liver
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50. Insulin…?
Converts glucose to glycogen
Breaks down glucose to glycogen