The DNA exists as _________helix which runs ________

1.double, parallel

2.double, antiparallel

3.single, perpendicular

4.single, parallel

Both the strands of the DNA are joined by

1.Disulphide bond

2.Hydrogen bonds

3.Glycosidic bonds

4.phosphodiester bonds

Which of the following is the pitch of B-DNA

1.34Angstrom

2.34 nanometre

3.34 picometre

4.34 femtometre

Which model explains the double helix nature of DNA

1.Watson and Crick Model

2.Gene Battery Model

3.Sanger Sequencing

4.Both 1 and 3

Which of the following is the most abundant protein in the whole of the biosphere?

1.Collagen

2.Albumin

3.RUBISCO

4.Antibody

Which of the following is present as a store house of energy in plant tissues?

1.Cellulose

2.Sucrose

3.Glycogen

4.Starch

Which of the following is present as a store house of energy in animal tissues?

1.Cellulose

2.Sucrose

3.Glycogen

4.Starch

Starch gives blue colour because of

1.It exists in globular form

2.I₂ gets hold in helical form

3.It has blue colour pigment

4.All of the above

Which of the following is not true about cellulose?

1.It cannot be digested by humans

2.It’s a polymer of β, D Glucose

3.It’s a branched polymer

4.It does not give blue colour with Iodine

Proteins are ______ of amino acids

1.homopolymer

2.heteropolymer

3.Neither homopolymer nor heteropolymer

4.None of these