tRNA is attached to mRNA by its
1 loop
II loop
III loop
IV loop
Number of nitrogenous bases in a codon is
3
2
1
5
What is antisense technology?
A cell displaying a foreign antigen used for synthesis of antigens
Production of somaclonal variants in tissue cultures
When a piece of RNA that is complementary in sequence is used to stop expression of a specific gene
RNA polymerase producing DNA
How many genes are present in E.coli?
200
320
231
None of these
RNA polymerase stops its activity by
rho(ρ)factor
sigma (σ) factor
UAG
AUG
The technique involving insertion of a desired gene into the DNA of plasmid vector is known as
Dressing
splicing
cloning
drafting
Point mutation involves
insertion
change in single base pair
duplication
deletion
The nucleotide sequence of an anticodon is complementary to nucleotide sequence in
tRNA
mRNA
rRNA
DNA
During translation initation in prokaryotes, a GTP molecule is needed in
association of 30S,mRNA with formy1-met-tRNA
associaton of 50S subunit of ribosome with initiation complex
formation of formy1-met-tRNA
binding of 30 subunits of ribosome with mRNA
Signaling between cells usually results in the activation of protein
lipases
kinases
proteases
nucleases
