Q. No.The ionizable nature of –NH2 and –COOH groups in amino acids allows them to exist in different ionic forms depending on the pH of the solution. What is the term used to describe the form of an amino acid where it has both a positive and a negative charge?
| 1. | Anion | 2. | Cation |
| 3. | Zwitterion | 4. | Neutral molecule |
Subtopic: Amino Acids |
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Which of the following is a basic amino acid?
| 1. | Tyrosine | 2. | Phenylalanine |
| 3. | Lysine | 4. | Tryptophan |
Subtopic: Amino Acids |
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Aromatic amino acids include:
1. Alanine, Valine, Leucine
2. Lysine, Arginine, Histidine
3. Phenylalanine, Tyrosine, Tryptophan
4. Serine, Threonine, Cysteine
1. Alanine, Valine, Leucine
2. Lysine, Arginine, Histidine
3. Phenylalanine, Tyrosine, Tryptophan
4. Serine, Threonine, Cysteine
Subtopic: Amino Acids |
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In the context of amino acids, which of the following groups is NOT a substituent on the α-carbon of an amino acid?
| 1. | Hydrogen | 2. | Carboxyl group |
| 3. | Amino group | 4. | Phosphate group |
Subtopic: Amino Acids |
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Amino acids that occur in proteins are characterized by the presence of a variable R group. Which of the following is an example of an amino acid with a hydrogen atom as its R group?
1. Alanine
2. Serine
3. Glutamic acid
4. Glycine
1. Alanine
2. Serine
3. Glutamic acid
4. Glycine
Subtopic: Amino Acids |
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| Assertion (A): | Amino acids are called \(\alpha\)-amino acids. |
| Reason (R): | Amino acids are organic compounds containing an amino group and an acidic group as substituents on the \(\alpha\)-carbon. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Amino Acids | Proteins | Different Amino Acids |
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Amino acids have both an amino group and a carboxyl group in their structure. Which amongst the following is an amino acid?
| 1. | Formic acid | 2. | Glycerol |
| 3. | Glycolic acid | 4. | Glycine |
Subtopic: Amino Acids |
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Subtopic: Amino Acids |
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The following can be found as a zwitter ion:
| 1. | Fatty acid | 2. | Monosaccharide |
| 3. | Amino acid | 4. | Nucleic acid |
Subtopic: Element Analysis | Amino Acids |
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NEET - 2024
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Identify the statement which is incorrect:
| 1. | Sulphur is an integral part of cysteine. |
| 2. | Glycine is an example of lipids. |
| 3. | Lecithin contains a phosphorus atom in its structure. |
| 4. | Tyrosine possesses an aromatic ring in its structure. |
Subtopic: Amino Acids | Different Amino Acids |
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