MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Biochemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In 3° structure of proteins, folding and shaping is done by __________ |
| A. | Hydrophobic interactions |
| B. | Polar interactions |
| C. | Hydrogen bonding |
| D. | None of the mentioned |
| Answer» B. Polar interactions | |
| 2. |
Identify the wrong statement. |
| A. | Hemoglobin is a globular protein |
| B. | Hemoglobin is a fibrous protein |
| C. | Fibrous proteins are insoluble in water |
| D. | Collagen is a fibrous protein |
| Answer» C. Fibrous proteins are insoluble in water | |
| 3. |
Native state of a protein can be disrupted by __________ |
| A. | Temperature |
| B. | pH |
| C. | Removal of water |
| D. | Presence of hydrophilic surfaces |
| Answer» E. | |
| 4. |
Hemoglobin is a __________ |
| A. | Monomer |
| B. | Dimer |
| C. | Trimer |
| D. | Tetramer |
| Answer» E. | |
| 5. |
Tertiary conformation of proteins is maintained by 3 types of bonds namely ionic, hydrogen and __________ |
| A. | Sulfide |
| B. | Disulfide |
| C. | Covalent |
| D. | Peptide |
| Answer» C. Covalent | |
| 6. |
Two chains of amino acids in an insulin molecule are held together by __________ |
| A. | Sulfide bridges |
| B. | Disulfide bridges |
| C. | Peptide bond |
| D. | Covalent linkage |
| Answer» C. Peptide bond | |
| 7. |
IN_3¬¨ àû_STRUCTURE_OF_PROTEINS,_FOLDING_AND_SHAPING_IS_DONE_BY?$# |
| A. | Hydrophobic interactions |
| B. | Polar interactions |
| C. | Hydrogen bonding |
| D. | None of the mentioned |
| Answer» B. Polar interactions | |
| 8. |
Native state of a protein can be disrupted by |
| A. | Temperature |
| B. | pH |
| C. | Removal of water |
| D. | Presence of hydrophilic surfaces |
| Answer» E. | |
| 9. |
Tertiary conformation of proteins is maintained by 3 types of bonds namely ionic, hydrogen and |
| A. | Sulfide |
| B. | Disulfide |
| C. | Covalent |
| D. | Peptide |
| Answer» C. Covalent | |
| 10. |
Two chains of amino acids in an insulin molecule are held together by |
| A. | Sulfide bridges |
| B. | Disulfide bridges |
| C. | Peptide bond |
| D. | Covalent linkage |
| Answer» C. Peptide bond | |
| 11. |
Who deduced the double-helical structure of DNA? |
| A. | Frederick Sanger |
| B. | Mendel |
| C. | Watson and Francis Crick |
| D. | Anton van Leeuwenhoek |
| Answer» D. Anton van Leeuwenhoek | |