MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Amino acids can show amphoteric behaviour. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Amino acids behave like carboxylic acids |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Identify the amino acid with the formula HOOC-CH2-CH2-CH(NH2)-COOH. |
| A. | Glutamic acid |
| B. | Aspartic acid |
| C. | Glutamine |
| D. | Asparagine |
| Answer» B. Aspartic acid | |
| 4. |
The structure shown below is ______ |
| A. | Side chain of histidine |
| B. | Side chain of tryptophan |
| C. | Side chain of proline |
| D. | Proline |
| Answer» E. | |
| 5. |
Which of the following is incorrect regarding tryptophan? |
| A. | It is an essential amino acid |
| B. | It is a basic amino acid |
| C. | It has an aromatic side chain |
| D. | It is a non-polar amino acid |
| Answer» C. It has an aromatic side chain | |
| 6. |
What is the one letter code for asparagine? |
| A. | A |
| B. | P |
| C. | N |
| D. | S |
| Answer» D. S | |
| 7. |
Which of the following amino acids contains only one amino group? |
| A. | Leucine |
| B. | Lysine |
| C. | Asparagine |
| D. | Glutamine |
| Answer» B. Lysine | |
| 8. |
Cysteine is a/an ________ amino acid. |
| A. | acidic |
| B. | essential |
| C. | aromatic |
| D. | sulphur containing |
| Answer» E. | |
| 9. |
Which of the following is a neutral amino acid? |
| A. | Glycine |
| B. | Lysine |
| C. | Arginine |
| D. | Histidine |
| Answer» B. Lysine | |
| 10. |
Which of the following amino acids are aromatic in nature? |
| A. | Methionine |
| B. | Isoleucine |
| C. | Proline |
| D. | Histidine |
| Answer» E. | |
| 11. |
What is the one letter code for tyrosine? |
| A. | T |
| B. | Y |
| C. | R |
| D. | S |
| Answer» C. R | |
| 12. |
Which of the following amino acids is optically inactive? |
| A. | Glycine |
| B. | Alanine |
| C. | Lysine |
| D. | Valine |
| Answer» B. Alanine | |
| 13. |
If the basic formula of an α-amino acid is R-CH(NH2)-COOH, where R is the side chain, what is the primary point of distinction between any two proteins? |
| A. | Number of amino groups |
| B. | Number of carboxyl groups |
| C. | The side chain R |
| D. | Relative positions of amino, carboxyl groups and R |
| Answer» D. Relative positions of amino, carboxyl groups and R | |
| 14. |
Proteins are polymers of ______ |
| A. | α-amino acids |
| B. | β-amino acids |
| C. | γ-amino acids |
| D. | δ-amino acids |
| Answer» B. β-amino acids | |