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Biology MCQ Question - Bioenergetics

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1. Which of the following is a chemical link between catabolism and anabolism?




2. Photosynthesis is process in which ________ compounds of carbon (CO2) and hydrogen (H2O) are reduced to carbohydrate like (glucose) using light energy.




3. C6H12O6 + 6O2 ? 6CO2 + 6H20 + ENERGY represents:




4. At which times there is no net gaseous exchange between leaves and the atmosphere.




5. Which of the following is a compensation point:




6. Quantitative study of energy relationships in biological systems obeys.




7. The organisms able to use sunlight directly as a source of energy are




8. Net yield of H2O in Photosynthesis is




9. The point at which there is no net exchange of gases between leaves and atmosphere is known as




10. Van neil hypothesis about the production of oxygen during phosynthesis was based on the study and investigations on




11. Visible light used in photosynthesis ranges from:




12. Which of the following light is least absorbed by the plants:




13. Which of the light is mainly absorbed by the plants:




14. Chlorophyll is insoluble in:




15. Which of the following statement about the head of a chlorophyll molecule is incorrect:




16. Which of the following pigment is Blue- green in colour:




17. Which is the correct order of energy transfer from assessory pigments to main photosynthetic pigment?




18. Light reaction takes place on/in




19. Thylakoids in chloroplasts are stacked into




20. In all plants the major sites of phosynthesis are




21. The dense fluid filled region in the chloroplast is




22. Chlorophylls are found embedded in the ______ membranes




23. Xanthophylls are ______ pigments




24. Chlorophylls mainly absorb ____ wavelengths




25. Deficiency of ________ causes yellowing in plants




26. The chlorophyll molecule is embedded in the core of thylakoid membrane which acts as




27. The most important photosynthetic pigment




28. Bacteriochlorophylls does not include




29. Molecular formula of chlorophyll b is




30. Carotenoids perform protective function in




31. About _______ % of photosynthesis is carried by terrestrial plants, while rest occurs in ocean, lakes, and ponds.




32. Air contains ______ % of CO2




33. PS I has chlorophyll a molecule which absorbs maximum light of _____ nm.




34. The percentage of light absorbed by the leaf




35. The first action spectrum was obtained by




36. First Actions spectrum was obtained by using




37. Of the following, which one causes higher production of food in green plants




38. Photosynthesis carried out by terrestrial plants is ____ of total photosynthesis.




39. Stomata cover only _________ of leaf surface.




40. Reduction in photosynthesis is of




41. NADPH2 provides




42. Of the following, which one light - gathering




43. Photosystem II has molecules which absorbs maximum light of




44. Glycolysis takes place in:




45. Complete breakdown of glucose molecule takes place in which of the following:




46. In alcoholic fermentation Pyruvic acid is broken down into:




47. In which of the following component of the body, lactic acid fermentation takes place:




48. In Anaerobic respiration only _____ % of the energy present within the chemical bond of glucose is converted into ATP.