| 6. | NAD is an abbreviation for |
| a. | Nicotine Abusive Department |
| b. | Nicotine Avoid Directions |
| c. | Nicotinamide adenine dinucleotide |
| d. | Nicotinamide dinucleotide |
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Answer: (c).Nicotinamide adenine dinucleotide
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| 7. | A protein which act as a carrier and transport oxygen and carbon dioxide in human body is known as |
| a. | hemoglobin |
| b. | immunoglobulin |
| c. | lipids |
| d. | antibody |
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Answer: (a).hemoglobin
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| 8. | Greater number of carbon atoms in chain results in higher |
| a. | melting point |
| b. | boiling point |
| c. | freezing point |
| d. | stability |
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Answer: (a).melting point
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| 9. | Number of nucleotide in a tRNA chain length is |
| a. | 70-90 |
| b. | 75-95 |
| c. | 70-80 |
| d. | 75-90 |
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Answer: (d).75-90
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| 10. | Main sources of carbohydrates are |
| a. | milk |
| b. | water |
| c. | green plants |
| d. | proteins |
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Answer: (c).green plants
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