Protein synthesis in an animal cell occurs
only on the ribosomes present in cytosol
on ribosomes present in cytoplasm as well as in mitochondria
only on ribosomes attached to the nuclear envelope and endoplasmic reticulum
on ribosomes present in the nucleolus as well as in cytoplasm
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
The promoter region in a lac operon is distinguishable into the following number of segments
Three
four
two
five
In E.coli, which of the following classes of plasmids are found?
F-Factors
R-Factors
Col-Factors
all of these
When a mutation is limited to the substitution of one nucleotide for another it is called
translocation
point mutation
base inversion
sugar phosphate deletion
The nucleotide sequence of an anticodon is complementary to nucleotide sequence in
tRNA
mRNA
rRNA
DNA
The technique involving insertion of a desired gene into the DNA of plasmid vector is known as
Dressing
splicing
cloning
drafting
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
tRNA is attached to mRNA by its
1 loop
II loop
III loop
IV loop
The one aspect which is not a salient feature of genetic code, is its being
degenerate
ambiguous
universal
specific
