MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
How many beta subunits are present in human hemoglobin? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 2. |
In which of these structures of proteins can disulfide bonds be found? |
| A. | Tertiary structure |
| B. | Alpha helix |
| C. | Beta sheet |
| D. | Primary structure |
| Answer» B. Alpha helix | |
| 3. |
Which level of organization do beta sheets belong to? |
| A. | Primary |
| B. | Quaternary |
| C. | Secondary |
| D. | Tertiary |
| Answer» D. Tertiary | |
| 4. |
Tertiary structure gives a three-dimensional view of proteins. True or false? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
How many types of subunits does hemoglobin possess? |
| A. | 1 |
| B. | 4 |
| C. | 2 |
| D. | 3 |
| Answer» D. 3 | |
| 6. |
How many subunits does human hemoglobin contain? |
| A. | 2 |
| B. | 3 |
| C. | 6 |
| D. | 4 |
| Answer» E. | |
| 7. |
Which of these levels of organization does hemoglobin possess? |
| A. | Quaternary |
| B. | Tertiary |
| C. | Secondary |
| D. | Primary |
| Answer» B. Tertiary | |
| 8. |
Which of these structures have more than one polypeptide chain? |
| A. | Primary |
| B. | Tertiary |
| C. | Quaternary |
| D. | Secondary |
| Answer» D. Secondary | |
| 9. |
Which of these structures is three-dimensional? |
| A. | Tertiary structure |
| B. | Primary structure |
| C. | Alpha helix |
| D. | Beta sheet |
| Answer» B. Primary structure | |
| 10. |
Which of these structures is necessary for the activity of proteins? |
| A. | Alpha helix |
| B. | Primary structure |
| C. | Tertiary structure |
| D. | Beta sheet |
| Answer» D. Beta sheet | |
| 11. |
Which of these statements is true about the secondary structure of proteins? |
| A. | Secondary structure of protein occurs only in the form of helices |
| B. | Protein helices are always double-stranded |
| C. | Protein helices and right-handed |
| D. | Entire primary structure of the protein is folded into a helix |
| Answer» D. Entire primary structure of the protein is folded into a helix | |
| 12. |
What type of helix is observed in proteins? |
| A. | Left-handed helix |
| B. | Parallel double helix |
| C. | Antiparallel double helix |
| D. | Right-handed helix |
| Answer» E. | |