Which one of the following structural formula of two organic compounds is correctly identified along with its related function?

• B-uracil – a component of DNA

• A-triglyceride – major source of energy

• A-lecithin – a component of cell membrane

• B-adenine – a nucleotide that makes up nucleic

 Lactose is composed of

• Glucose + Glucose

• Glucose + Galactose

• Glucose + Fructose

• Fructose + Galactose

Deficiency of vitamin -B₁₂ causes

• Cheilosis

• Thalassemia

• Beri-Beri

• Pernicious Anaemia

184.

Nucleotides are formed by

• purine, sugar and phosphate

• purine, pyrimidine and phosphate

• purine, pyrimidine sugar and phosphate

• pyrimidine, sugar and phosphate

The rupture and fractionation do not usually occur in the water column in vessel/tracheids during the ascent of sap because of

• Lignified thick walls

• Cohesion and adhesion

• Weak gravitational pull

• Transpiration pull

Match the enzyme in column I with its function in column II and choose the correct option.

Column I	Column II
A. Beta-Galactosidase	1. Joining of DNA fragments
B. Permease	2. Peptide Bond Formation
C. Ligase	3. Hydrolysis of Lactose
D. Ribozyme	4. Increases permeability to Beta-galactosidase

• A-2, B-1, C-4, D-3

•  A-3, B-2, C-1, D-4

• A-2, B-4, C-1, D-3

•  A-1, B-2, C-4, D-3

Which of the following represent uridylic acid?

• Uracil + Ribose

• Uridine + Phosphoric acid

• Uracil + Phosphoric acid

• Uridine + Ribose + Phosphoric acid

Consider the following statements with two blanks X and Y and select the option which correctly fills up these blanks.

In the centre of the intervertebral disc, a soft area is present called ….X….....

Which is supposed to be remnant of …. Y....

• X-Nucleus pulposus ,         Y-Nerve cord

• X-Centrum,         Y-Noto cord

• X-Nucleus pulposus,         Y-Noto cord

•  X-Centrum,         Y-Nerve cord

Given below is the chemical formula of

• Palmitic Acid

• Glycerol

• Galactose

• Stearic acid

Jacob and Monod name some enzymes as allosteric whose activity is regulated by

• End product

• Substrate

• by product

• Coenzyme