Which of the following is the simplest amino acid?

1. Alanine 

2. Asparagine

3. Glycine 

4. Tyrosine

The zwitterion is shown by:

1. Only A

2. Only B

3. Both A and C

4. A, B and C

Category of aromatic amino acids include all except

1. Serine

2. Tyrosine

3. Phenylalanine

4. Tryptophan

Following is the diagrammatic representation of three different amino acids labelled as 1, 2 and 3?

Select the option which is correct identification of amino acids 1, 2 and 3.

         1                                     2                                     3

     Glycine                             Valine                          Threonine

     Glycine                           Isoleucine                      Aspartic acid

     Glycine                           Alanine                              Serine   

     Glycine                            Serine                              Alanine 

The body meets the demand of essential amino acids through

(1) Food

(2) Body synthesised  on its own

(3) Both A and B

(4) None of these

How many types of proteinaceous amino acids are there?

1.20

2.more than 20

3.less than 20

4.Both 1 and 3

Identify the amino acid with hydroxymethyl as its R group:

1. Glycine

2. Alanine

3. Serine

4. Phenylalanine

Match each item in Column I with one item in Column II and chose your answer from the codes given below:

    Column I          Column II

(Amino Acid)          (Nature)
I. Tryptophan    1. Sulfur-containing
II. Cysteine       2. Aromatic
III. Valine          3. Basic
IV. Lysine         4. Neutral

Codes:

  I II III IV

1. 1 2 3 4

2. 2 1 4 3

3. 2 1 3 4

4. 1 2 4 3

Which group of the amino acid contributes essentially to the chemical and physical properties of amino acids?

1.Amino group

2.Carboxyl group

3.Alkyl group (R group)

4.All of these

How many groups of the methane can be substituted to form an amino acid Glycine.

1.4

2.3

3.2

4.1