Types of Amino Acids

Q.

Why are α-amino acids called so?

Q. All amino acids are acidic in nature.

1. False
2. True

Q. Each amino acid is unique due to the presence of:

1. R-group
2. Carboxylic group
3. Amine group
4. Benzene ring

Q. Which of the following is a sulphur-containing amino acid?

1. Methionine
2. Cysteine
3. Phenylalanine
4. Both (a) and (b)

Q. An example of a sulphur containing amino acid is ________.

1. Lysine
2. Serine
3. Cysteine
4. Tyrosine

Q. Which of the following pairs of amino acids are considered as the semi essential amino acids?

1. Lysine, arginine, histidine
2. Aspartic acid, glutamic acid
3. Phenylalanine, tyrosine, tryptophan
4. Arginine, histidine

Q.

Which one out of (a) to (d) given below correctly represents the structural formula of a basic amino acid?

1. 

2. 

3. 

4. 

Q.

Which of these amino acids is NOT a hydrophilic amino acid?

1. Tyrosine

2. Threonine

3. Aspargine

4. Valine