Thursday, November 17, 2016
Wednesday, March 23, 2016
STPM Biology Tuition
Tutor:Ms CGTeoh
Qualifications: Master degree in Bioprocess Engineering
Experiences: 6 years teaching experiences in the subject (91.4% students pass the paper)
Teaching methods: exam-oriented/ exam tips...you don't have to swallow whole reference book:)))
Semester 1 Biology: Classes start in April
Semester 2 Biology: Classes start in December
Semester 3 Biology: Classes start in June
Supplement media: wechat/whatsapp (014-2491602) email (grylteoh@yahoo.com)
Location: Bukit Mertajam (Penang)/ Nibong Tebal (Penang)
Friday, December 18, 2015
Friday, November 23, 2012
STPM BIOLOGY 2012 TIPS
Pls follow the link below for tips:
http://berryberryeasy.com/2012/10/stpm-biology-2012-%E2%80%93-tips-and-predictions-for-papers-9641-9642-and-9643/
http://berryberryeasy.com/2012/10/stpm-biology-2012-%E2%80%93-tips-and-predictions-for-papers-9641-9642-and-9643/
Wednesday, October 10, 2012
ANSWER - STPM TRIAL EXAM (IBM) - U6 2012 - MTC, P1
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1. C
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2. C
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3. D
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4. A
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5. B
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6. B
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7. C
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8. B
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9. A
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10. A
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11. E
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12. D
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13. C
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14. B
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15. B
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16. C
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17. A
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18. D
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19. D
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20. E
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21. D
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22. D
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23. E
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24. A
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25. D
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26. E
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27. A
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28. E
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29. D
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30. A
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31. B
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32. B
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33. B
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34. D
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35. C
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36. B
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37. C
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38. B
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39. B
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40. A
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41. C
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42. D
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43. C
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44. C
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45. A
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46. C
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47. C
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48. D
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49. C
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50. C
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Sunday, September 2, 2012
STPM Biology - chapter 3 (old syllabus); chapter 4 (new syllabus): Revision essay question 18
18. Define the term "enzyme" and relate its function and properties to its structure.
Answer:
Enzymes are substrate specific which means that it has a specific shape that allows only the wanted substrate to bond and react with it.Because of its structure and shape it can carry out its function in speeding up the reaction by lowering the activation energy needed for the reaction to take place.
by sharon teoh
STPM Biology - chapter 1 (old syllabus); chapter 3 (new syllabus): Revision essay question 36
36.
Give an illustrated account of the detailed structure and functions of the plasma membrane.
Answer:
(a) structure
Plasma membrane made up of two layers are composed of phospholipid .The hydrophilic heads of the phospholipids are in contact with water and extracellular fluid in the outer layer and the inner layer in in contact with the cytoplasm.The hydrophobic tails face each other in the middle of the bilayer.The protein molecules float about in phospholipid bilayer forming a mosaic pattern.There are two types of membrane protein which are globular protein.Intrinsic protein are the protein that are fully or partially embedded in the phospholipid bilayer. Extrinsic protein are the proteins that are found floating on the external or internal surface of the plasma membrane.Some of the membrane protein and phospholipid have short ,branched carbohydrate chains ,forming glycoprotein and glycolipid.Lipids such as cholesterol are inserted among phospholipid molecules.
(b) function
It is the protective membrane surrounds the outside of both Eukaryotic and Prokaryotic cells.It is made up of a double layer of phospholipid and controls the movement of various substances into and out of the cell.It also allows cell identification.It seperate interior of a cell from external environment.It is selectively permeable and amphipathic in nature.
Give an illustrated account of the detailed structure and functions of the plasma membrane.
Answer:
(a) structure
Plasma membrane made up of two layers are composed of phospholipid .The hydrophilic heads of the phospholipids are in contact with water and extracellular fluid in the outer layer and the inner layer in in contact with the cytoplasm.The hydrophobic tails face each other in the middle of the bilayer.The protein molecules float about in phospholipid bilayer forming a mosaic pattern.There are two types of membrane protein which are globular protein.Intrinsic protein are the protein that are fully or partially embedded in the phospholipid bilayer. Extrinsic protein are the proteins that are found floating on the external or internal surface of the plasma membrane.Some of the membrane protein and phospholipid have short ,branched carbohydrate chains ,forming glycoprotein and glycolipid.Lipids such as cholesterol are inserted among phospholipid molecules.
(b) function
It is the protective membrane surrounds the outside of both Eukaryotic and Prokaryotic cells.It is made up of a double layer of phospholipid and controls the movement of various substances into and out of the cell.It also allows cell identification.It seperate interior of a cell from external environment.It is selectively permeable and amphipathic in nature.
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