Question No:1
A nucleotide is a molecule consisting of a
(A) Hexose sugar, phosphorous and albumen
(B) Posphorus, iron and calcium
(C) Phosphate, 5- carbon sugar and nitrogen base
(D) RNA and glucose
Question No:2
The protein rich alga is
(A) Ulothrix
(B) Spirogyra
(C) Nostoc
(D) Chlorella
Question No:3
What’s the difference between RNA and DNA?
(A) Base
(B) Sugar
(C) Sugar and base
(D) phosphate
Question No:4
DNA replication generally proceeds in a:
(A) 51—>31 direction
(B) 31—>51 direction
(C) 31—>31 direction
(D) 51—>51 direction
Question No:5
The basic unit of chitin
(A) N – acetyl glucosamine
(B) Glucose
(C) Galactose
(D) Fructose
Question No:6
Which of the following pairs correctly matched?
(A) Central dogma – codon
(B) Okazaki fragments – splicing
(C) RNA polymerase – RNA primer
(D) Restriction enzymes-genetic engineering
Question No:7
A nucleoside is
(A) Base + sugar
(B) Base + phosphate
(C) Sugar + Phosphate
(D) Base+ sugar + Phosphate
Question No:8
DNA Polymerase enzyme is required for synthesis of
(A) DNA from RNA
(B) RNA from DNA
(C) DNA from DNA
(D) RNA from RNA
Question No:9
Which type of DNA is found in bacteria?
(A) Helical DNA
(B) Membrane bound DNA
(C) Straight DNA
(D) Circular free DNA
Question No:10
Which typical stage is known for DNA replication?
(A) Metaphase
(B) G1-Phase
(C) S-phase
(D) G2-Phase
Question No:11
Radio-tracer technique shows that DNA is in
(A) Single-helix stage
(B) Double-helix stage
(C) Multi-helix stage
(D) None of the above
Question No:12
The genetic material in transduction is
(A) DNA
(B) RNA
(C) Either DNA or RNA
(D) Both DNA and RNA
Question No:13
A plasmid is made up of
(A) t-RNA
(B) m-RNA
(C) r-RNA
(D) DNA
Question No:14
In a ds DNA molecule the % of cytosine is What is the % of adenine?
(A) 36%
(B) 18%
(C) 32%
(D) 64%
Question No:15
Change in the sequence of nucleotide in DNA is called as
(A) Mutagen
(B) Mutation
(C) Recombination
(D) Translation
Question No:16
The succesive nucelotides of RNA are covalently linked through
(A) Hydrogen bonds
(B) Phosphodiester bonds
(C) Glycosidic bonds
(D) None of the above
Question No:17
Richest source of vitamin ‘C’ is
(A) Lemon
(B) Orange
(C) Emblica officinalis
(D) Capsicum fruitesence
Question No:18
How many nucleotides in mRNA code for one amino acid?
(A) 1
(B) 2
(C) 3
(D) 4
Question No:19
Nitrogenous bases present in DNA
(A) Adenine guanine, cytosine, thymine
(B) Adenine, guanine, cytosine, uracil
(C) Adenine, thymine, uracil
(D) Guanine, uracil
Question No:20
DNA replication occurs during which part of cell cycle?
(A) G1– phase
(B) S – phase
(C) G2 – phase
(D) Dividing phase