MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Boiling an egg is an example of reversible denaturation. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
The primary structure of protein is unaffected by denaturation. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
A protein X was found in a biological system with a unique 3-D structure and biological activity. X is known as _______ |
| A. | tertiary structure |
| B. | quaternary structure |
| C. | native protein |
| D. | globular protein |
| Answer» D. globular protein | |
| 4. |
Fibrous and globular proteins are classified on the basis of ______ structure. |
| A. | primary |
| B. | secondary |
| C. | tertiary |
| D. | quaternary |
| Answer» D. quaternary | |
| 5. |
The structure in which all peptide chains are stretched out to full extension and laid side by side through intermolecular hydrogen bonds is called ______ |
| A. | -helix |
| B. | -pleated sheet |
| C. | tertiary structure |
| D. | quaternary structure |
| Answer» C. tertiary structure | |
| 6. |
Which type of bonds govern the secondary structure of proteins? |
| A. | Covalent |
| B. | Hydrogen |
| C. | Electrostatic |
| D. | Peptide |
| Answer» C. Electrostatic | |
| 7. |
The sequence in which amino acids are arranged in a protein is called ______ structure. |
| A. | primary |
| B. | secondary |
| C. | fibrous |
| D. | sheet |
| Answer» B. secondary | |
| 8. |
Which of the following is not a fibrous protein? |
| A. | Keratin |
| B. | Myosin |
| C. | Collagen |
| D. | Albumin |
| Answer» E. | |
| 9. |
Which of the following bonds in not found in fibrous proteins? |
| A. | Phosphodiester |
| B. | Peptide |
| C. | Hydrogen bonds |
| D. | Disulphide |
| Answer» B. Peptide | |
| 10. |
Alanylglycyl phenylalanine is an example of a ______ |
| A. | dipeptide |
| B. | tripeptide |
| C. | tetrapeptide |
| D. | polypeptide |
| Answer» C. tetrapeptide | |
| 11. |
Proteins are _______ |
| A. | dipeptides |
| B. | tripeptides |
| C. | tetrapeptides |
| D. | polypeptides |
| Answer» E. | |
| 12. |
How many peptide linkages does a hexapeptide have? |
| A. | 4 |
| B. | 5 |
| C. | 6 |
| D. | 7 |
| Answer» C. 6 | |
| 13. |
Proteins are formed primarily from ______ bonds. |
| A. | glycosidic |
| B. | peptide |
| C. | phosphodiester |
| D. | disulphide |
| Answer» C. phosphodiester | |