- 1(current)
Q. No.Consider the given two statements:
| Statement I: | A protein is a heteropolymer. |
| Statement II: | There are 20 types of proteinogenic amino acids and they are linked by peptide bonds to form polypeptides. |
1. Only Statement I is correct
2. Only Statement II is correct
3. Both Statement I and Statement II are correct
4. Both Statement I and Statement II are incorrect
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| I: | GLUT-4 | Enables glucose transport out of the cells |
| II: | Collagen | Most abundant protein in animal world |
| III: | RuBisCO | Most abundant protein in the whole of the biosphere |
| 1. | Only I | 2. | Only I and II |
| 3. | Only I and III | 4. | Only II and III |
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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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What level of protein organization structure explains the 3-D shape of an enzyme?
| 1. primary structure | 2. tertiary structure |
| 3. secondary structure | 4. quaternary structure |
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An alpha helix is a:
1. primary structure of a protein
2. secondary structure of a protein
3. tertiary structure of a protein
4. quaternary structure of a protein
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| I: | The level of protein structure organization that provides the positional information of amino acids in a protein is called as the primary structure. |
| II: | Only right handed helices are observed in proteins seen in living organisms. |
| III: | Tertiary structure is absolutely necessary for the many biological activities of proteins. |
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
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What level of protein structure is shown in the given diagram?
| 1. Primary | 2. Secondary |
| 3. Tertiary | 4. Quaternary |
- 1(current)
Q. No.
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