CBSE
Multiple Choice QuestionsWhich one out of (a) to (d) given below correctly represents the structural formula of the basic amino acid?
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
Nucleotides are formed by
purine, sugar and phosphate
purine, pyrimidine and phosphate
purine, pyrimidine sugar and phosphate
pyrimidine, sugar and phosphate
Lactose is composed of
Glucose + Glucose
Glucose + Galactose
Glucose + Fructose
Fructose + Galactose
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
Deficiency of vitamin -B12 causes
Cheilosis
Thalassemia
Beri-Beri
Pernicious Anaemia
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
Given below is the chemical formula of
Palmitic Acid
Glycerol
Galactose
Stearic acid
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
Which of the following represent uridylic acid?
Uracil + Ribose
Uridine + Phosphoric acid
Uracil + Phosphoric acid
Uridine + Ribose + Phosphoric acid
