Entry Test MCQ :: Biological Molecules p4

61.	rRNA constitutes _____ % of the total cellular RNA.
	A. 3-4 % B. 10-20% C. 80% D. 90%

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62.	There are mainly _______ types of tRNA
	A. 170 B. 20 C. 25 D. 15

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63.	Most of the cellular secretions are _____ in nature.
	A. Glycolipids B. Glycoproteins C. Nucleohistones D. Proteins

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64.	Which conjegated molecules play important role in gene expression?
	A. Glycolipids B. Glycoproteins C. Nucleohistones D. None of these

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65.	The survival of an animal depends upon its ability to take some from its environment
	A. Chemicals B. Hydrocarbons C. Organic molecules D. Inorganic molecules ANSWERS OF ABOVE Five MCQs 61.(C) 62.(B) 63.(B) 64.(C) 65.(C)

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66.	Interconversion of carbohydrates proteins and lipids in living cells are an example of
	A. Coordinated catabolic activities B. Coordinated anabolic activities C. Both A and B D. Any one

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67.	Carbon commonly combines with
	A. H B. N & O C. P & S D. All of these

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68.	Non polar organic molecules are _______ in water.
	A. Soluble B. Insoluble C. Partially soluble D. Depends upon condition

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69.	In living organisms the lubricant which provides protection against damage resulting from friction is
	A. Carbohydrates B. Fatty acid C. Water D. Protein

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70.

In Cx(H2O)y x ranges from

A. 1 to 3 thousand B. 3 to many thousand C. 3 to 5 thousand D. 5 to 9 thousand ANSWERS OF ABOVE Five MCQs 66.(C) 67.(D) 68.(B) 69.(C) 70.(B)  71.  Glycolipids and glycoproteins have structural role in the _____ matrix of animal and bacterial cell A. Extracellular B. Intracellular C. Both of these D. Glucose 72.  The trioses which are intermediate in respiration and photosynthesis are A. Glyceraldehydes B. Dihydroxy acetone C. Both of these D. None of these 73.  Keto group is represented as A. CO B. C-COO-C C. HCOH D. HOH 74.  The monosaccharide found in some bacteria and occurring rarely are A. Trioses B. Hexoses C. Tetroses D. Pentoses 75.  How many carbon atoms are required to form a furan ring (ribofuranose) A. 3 B. 4 C. 5 D. 2 ANSWERS OF ABOVE Five MCQs 71.(A) 72.(C) 73.(A) 74.(C) 75.(B)  76.  In esterification OH comes from A. Organic acid B. Alcohol C. Water D. Sugar 77.  Triglyceride is also known as A. Natural lipid B. Neutral lipid C. Neutral wax D. All of these 78.  Which one is not found in fatty acids in acylglycerols? A. C-6 B. C-25 C. C-26 D. C-30 79.  Animals fats are ___________ atroom temperature A. Liquids B. Gases C. Solids D. None of these ANSWERS OF ABOVE Five MCQs 76.(B) 77.(B) 78.(B) 79.(C)