Biology(11-12)2009

1. The word science comes from the Latin word ‘Scientia’ meaning what?

 
 
 
 

2. Which of the following substances can be used over and over again in an enzyme catalyzed reaction?

 
 
 
 

3. What is the intermediate compound that is formed during an enzyme catalyzed reaction?

 
 
 
 

4. Which of the following microorganisms are prokaryotic?

 
 
 
 

5. Which of the following laboratory tools is LEAST accurate to measure 1 ml of liquid?

 
 
 
 

6. From which of the following diseases can one be protected by sleeping under the cover of a mosquito net?

 
 
 
 

7. Which of the following parts of the flower did Mendel remove from young flowers tp prevent self-pollination?

 
 
 
 

8. What do we call the place where organisms live in their ecosystem?

 
 
 
 

9. Which of the following is the sex chromosome constitution of human males?

 
 
 
 

10. Which of the following plants uses CAM photosynthesis?

 
 
 
 

11. Which of the following vases is NOT found in RNA?

 
 
 
 

12. In a report of a scientific experiment, description of which of the following comes before all the others?

 
 
 
 

13. Which one of the following I different from the other three?

 
 
 
 

14. What happens when a plant cells absorbs in more water?

 
 
 
 

15. Which level of protein structural organization involves two or more polypeptide?

 
 
 
 

16. Which of the following do biologists consider ancestrial to the higher organisms of today?

 
 
 
 

17. Which type of fatty acid is healthier when used as a human food source?

 
 
 
 

18. Which of the following is NOT recycled in the ecosystem?

 
 
 
 

19. What kind of cross is performed to determine whether the parent was homozygous or heterozygous?

 
 
 
 

20. Which type of animal behavior happens without learning?

 
 
 
 

21. When a drop of iodine solution is added to a solution of food stuff and the food stuff turns dark blue, what does the food stuff contain?

 
 
 
 

22. Which of the following has the highest risk of HIV transmission?

 
 
 
 

23. Which of the following elements is the most abundant in living things?

 
 
 
 

24. Which of the following organelles is common to both plant and animal cells?

 
 
 
 

25. Among the following organic molecules, identify the one that does not contain nitrogen

 
 
 
 

26. If a cell fails to from lysosomes, which of the following cellular functions will get disrupted first?

 
 
 
 

27. Most co-enzymes are the derivatives of which of the following nutrients?

 
 
 
 

28. To produce glucose from starch, which of the following enzymes would one use?

 
 
 
 

29. Which class of enzyme inhibitors has similar shape as that of the normal substrate?

 
 
 
 

30. For a substance to easily pass across the cell membrane by simple diffusion which of the following properties should it possess?

 
 
 
 

31. Among the following factors that affect enzyme activity, which one does NOT cause enzyme denaturation?

 
 
 
 

32. Which of the following is a type of ecological succession that starts from a cleared forest area?

 
 
 
 

33. Which of the following states of photosynthesis can take place in the dark?

 
 
 
 

34. Which of the following is the major role played by bacteria and fungi in the ecosystem?

 
 
 
 

35. If heterozygous tall pea plant (Tt) is crossed with a short pea plant (tt), what percentage of the progeny is expected to be short?

 
 
 
 

36. Which of the human cell types is attacked by HIV?

 
 
 
 

37. Which of the following processes is most important to release nutrients from dead organic matter into the soil?

 
 
 
 

38. Which of the following biomass supports the highest diversity of plant and animal life?

 
 
 
 

39. Which of the following demographic factors can increase the size of the world population?

 
 
 
 

40. when Mendel crossed a tall pea plant with a short plant, the F1 progeny were all tall. What F1 did he obtain when he made the reciprocal cross?

 
 
 
 

41. Which of the following groups are believed to be the first photosynthetic organism to evolve on earth?

 
 
 
 

42. Which of the following factors brings about changes both during evolution and breeding of plants and animals?

 
 
 
 

43. Among the following, which one is held most responsible for the present fast depletion of the world biodiversity?

 
 
 
 

44. Which of the following reproductive isolating mechanisms keeps the horse and donkeys as two independent species?

 
 
 
 

45. Which of the following activities of an organism do we call a behavior?

 
 
 
 

46. A reflex action that involves internal organs such as the heart is referred to as ?

 
 
 
 

47. At which of the following generations of crosses between dominant and recessive homozygote parents are all the progeny heterozygous?

 
 
 
 

48. Which of the following organs serves as a coordinating system in a reflex action?

 
 
 
 

49. Which type of enzymes catalyzes the joining of two molecules by the formation of new bonds?

 
 
 
 

50. Which of the following statements about enzymes is NOT correct?

 
 
 
 

51. Gycolysis occurs in the                       ?

 
 
 
 

Question 1 of 51

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