MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of these is a type of secondary structure of proteins? |
| A. | Line |
| B. | Sheet |
| C. | Globule |
| D. | Spherical |
| Answer» C. Globule | |
| 2. |
Which of these bonds is present in the primary structure of protein? |
| A. | Peptide bond |
| B. | Glycosidic bond |
| C. | Hydrogen bond |
| D. | Disulfide bonds |
| Answer» B. Glycosidic bond | |
| 3. |
Identify the labeled portion of the peptide. |
| A. | N-terminal amino acid |
| B. | C-terminal amino acid |
| C. | L-terminal amino acid |
| D. | S-terminal amino acid |
| Answer» B. C-terminal amino acid | |
| 4. |
What is the last amino acid of the primary structure known as? |
| A. | N-terminal amino acid |
| B. | L-terminal amino acid |
| C. | S-terminal amino acid |
| D. | C-terminal amino acid |
| Answer» E. | |
| 5. |
A protein thread exists as an extended rigid rod. True or false? |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
What is the first amino acid of the primary structure known as? |
| A. | A-terminal amino acid |
| B. | C-terminal amino acid |
| C. | N-terminal amino acid |
| D. | L-terminal amino acid |
| Answer» D. L-terminal amino acid | |
| 7. |
What is the right end of the primary structure of proteins represented by? |
| A. | Methyl group |
| B. | Cofactor |
| C. | First amino acid |
| D. | Last amino acid |
| Answer» E. | |
| 8. |
What is the left end of the primary structure of proteins represented by? |
| A. | First amino acid |
| B. | Last amino acid |
| C. | Cofactor |
| D. | Methyl group |
| Answer» B. Last amino acid | |
| 9. |
What makes up the primary structure of proteins? |
| A. | Peptides |
| B. | Peptones |
| C. | Amino acids |
| D. | Polypeptides |
| Answer» D. Polypeptides | |
| 10. |
What is the configuration of proteins in the primary structure? |
| A. | Helix |
| B. | Line |
| C. | Sheet |
| D. | Globule |
| Answer» C. Sheet | |
| 11. |
How many levels of organization do proteins have? |
| A. | 4 |
| B. | 3 |
| C. | 2 |
| D. | 5 |
| Answer» B. 3 | |
| 12. |
Structure of molecules in physics refers to the ______ |
| A. | primary structure |
| B. | two-dimensional structure |
| C. | three-dimensional structure |
| D. | molecular formula |
| Answer» D. molecular formula | |
| 13. |
Structure of molecules in inorganic chemistry refers to the ______ |
| A. | three-dimensional structure |
| B. | two-dimensional structure |
| C. | molecular formula |
| D. | primary structure |
| Answer» D. primary structure | |
| 14. |
Proteins are heteropolymers of ______ |
| A. | lipids |
| B. | monosaccharides |
| C. | peptides |
| D. | amino acids |
| Answer» E. | |