Wednesday, September 28, 2011

GRADE 9 IGCSE

Research the following:
¡Singapore opened Asia’s largest water desalination plant on Sept. 13, 2005. Water desalination involves reverse osmosis.
¡What is reverse Osmosis?
¡What are the sources of drinking water in Singapore and Indonesia?
¡How much water is consumed in Singapore per day? Indonesia per day?
¡Why does Singapore needs to desalinate water?

Wednesday, September 21, 2011

GRADE 9 IGCSE

RESEARCH ON THE FOLLOWING:

1. What is food? explain its use in the body of an organism.
2. What is meant by essential and non essential amino acids? How do we get it?
3. In what way is a calorie related to a change in weight?
4. What vitamin deficiency will a pure vegetarian most likely suffer from?
5. People can survive a short time without most nutrients, but they must have water regularly. Why?
6. What is energy?
7. What is a flamingo milk?
8. How does the body control heat loss?
9. How do cholesterol lead to heart disease?
10. How is starch hydrolyzed by enzymes?
11. Explain the quality of proteins.
12. Problems of world food supply.
13. Balanced diet.

Monday, September 12, 2011

GRADE 10: RESEARCH

Research the following:
1. Explain thoughtless response through an example from an animal without brain.
2. Structure of spinal nerves.
3. Discuss Grey matters.
4. Meningitis: cause, effect and treatment.
5. Explain the knee-jerk reflex.
6. Pavlov's experiment with conditioned reflex.
7. Pupil and its size adaptation to animals.
8. Discuss tapetum.
9. Explain pupil reflex.
10. Explain stereoscopic vision.
11. Explain the near point of the eye.
12. Acute Myopia: What are the advantages and disadvantages with, wearing glasses, contact lenses or refractive surgery? What will you suggest?
13. Discuss growth and metabolic abnormalities.
14. Compare hormones that have long term effect from short term effect.
15. Compare hormonal and nervous systems.