Q. No.Cellulose, the most important constituent of plant cell wall, is made of
1.
Unbranched chain of glucose molecules linked by α 1, 4 glycosidic bond
2.
Branched chain of glucose molecules linked by β 1, 4 glycosidic bond in straight chain and β 1, 6 glycosidic bond at the site of branching
3.
Unbranched chain of glucose molecules linked by β 1, 4 glycosidic bond
4.
Branched chain of glucose molecules linked by α 1, 6 glycosidic bond at the site of branching
Which of the following bio-molecules is strictly not a polymer?
| 1. | Carbohydrates | 2. | Proteins |
| 3. | Fats | 4. | Nucleic acids |
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Most of the polymerization reactions result from:
| 1. | Redox reactions | 2. | Dehydration synthesis |
| 3. | Hydrolysis | 4. | Isomerization |
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The R group in a proteinaceous amino acid is hydroxymethyl. This amino acid:
1. is not an essential amino acid
2. is not genetically coded for
3. is involved in disulfide linkage
4. is acidic in nature
The given compound:
| 1. | is a storage product in archaea |
| 2. | is the source of energy in fungi |
| 3. | is present in the cell walls of gram negative bacteria |
| 4. | is a structural component of plasma membrane |
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Which of the following components is found in least amounts in an average cell?
| 1. | Carbohydrates | 2. | Fats |
| 3. | Nucleic acids | 4. | Proteins |
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Inulin is a:
1. Disaccharide containing two galactose
2. Disaccharide containing fructose and galactose
3. Polymer of fructose
4. Polysaccharide used in microbial culture
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Adenine and guanine are:
1. Substituted purines
2. Substituted pyrimidines
3. Deoxyribonucleosides
4. Ribonucleotides
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