Most abundant protein in the whole of the biosphere is:
1. | Collagen | 2. | Cellulose |
3. | RuBisCO | 4. | Keratin |
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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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The first amino acid in the primary structure of a protein is termed as:
1. | C – terminus amino acid | 2. | N – terminus amino acid |
3. | An imino acid | 4. | Alpha amino acid |
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Quaternary structure is seen in proteins that:
1. act as biochemical catalysts
2. are embedded within the plasma membrane
3. are assembly of more than one subunits
4. do not have any structural role in the cell
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The double helix model of DNA by Watson and Crick exhibits its:
1. | Primary structure | 2. | Secondary structure |
3. | Tertiary structure | 4. | Quaternary structure |
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The strands of the DNA double helix are:
1. | identical | 2. | coiled around each other |
3. | parallel to each other | 4. | complementary to each other |
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At each step of ascent, the helical strand of DNA turns
1. | 36 degree | 2. | 34 degree |
3. | 20 degree | 4. | 180 degree |
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The pitch of DNA helix is:
1. 0.34 nm | 2. 3.4 nm |
3. 34 nm | 4. 340 nm |
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The compound from which cholesterol is formed is:
1. Mevalonic acid
2. Butyric acid
3. Alpha ketoglutaric acid
4. Acetic acid