Which of the following is incorrect statement with respect to carbohydrates?

1. Mannose and galactose are polymers of glucose 

2. Cellulose acetate is used in fabrics, cellulosic plastics and shatter proof glasses

3. Most of sugars show Benedict's test but not sucrose

4. Sucrose is composed of glucose and fructose and is a non-reducing sugar

 

Which of the following is diagrammatic representation of phospholipid (lecithin)?

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 

Give below is a diagrammatic representation which indicates the secondary structure of DNA 

Choose the correct option for the structures labelled as A, B, C and D

    A                                 B                               C                            D

1. Guanine                    Cytosine                    Adenine                 Thymine

2. Guanine                     Thymine                   Adenine                  Cytosine

3. Thymine                   Adenine                     Guanine                 Cytosine

4. Thymine                   Guanine                    Adenine                  Cytosine    

The elemental composition in human body in descending order is

1. Oxygen - Carbon - Nitrogen - Calcium

2. Carbon - Oxygen - Nitrogen - Calcium

3. Calcium - Carbon - Oxygen - Nitrogen

4. Oxygen - Calcium - Carbon - Nitrogen 

Find the wrong statement 

1. Living state is non-equilibrium steady state to be able to perform work

2. There is no uncatalysed metabolic conversion in living systems

3. Tertiary structure is absolutely necessary for the many biological activities of proteins

4. Cellulose contain complex helices where it can hold iodine

The molecule that provides stability to cell membrane is

Which of the following represents uridylic acid?

1. Uracil + Ribose

2. Uridine + Phosphoric acid

3. Uracil + Phosphoric acid

4. Uridine + Ribose + Phosphoric acid

Carotenoids and anthocyanin pigments are examples of

1. Primary metabolites

2. Secondary metabolites

3. Protein

4. Sugar

Which element is present negligible in human body?

1. O

2. C

3. H

4. Si