Question No:1
tRNA for serine bears anticodon _____.
[A] AUG
[B] UAC
[C] UCA
[D] UGA
Question No:2
The structure of tRNA resembles which leaf?
[A] Olive
[B] Neem
[C] Clove
[D] Clover
Question No:3
Ribosomes are the cellular factory for synthesis of _____.
[A] Carbohydrates
[B] Enzymes
[C] Proteins
[D] Lipids
Question No:4
Ribozyme in bacteria is _____ rRNA.
[A] 30 S
[B] 32 S
[C] 23 S
[D] 21 S
Question No:5
Additional sequences on mRNA referred to as _____ are not translated,
[A] Variable number tandem repeats
[B] Non coding sequence
[C] Untranscribed regions
[D] Untranslated regions
Question No:6
In Eukaryotes, which of the following mechanisms is not correct in terms of regulation of gene expression?
[A] Transcription
[B] Splicing
[C] Transport of mRNA from cytoplasm to nucleus
[D] Translation
Question No:7
beta-galactosidase is synthesized by E. coli to catalyze hydrolysis of _____ into _____ and glucose.
[A] galactose, lactose
[B] galactose, glucose
[C] lactose, galactose
[D] maltose, galactose
Question No:8
Lac operon was elucidated by
[A] Watson, Crick
[B] Jacob, Monod
[C] Johannson
[D] Meischer
Question No:9
A polycistronic structural gene is regulated by a common promoter and regulator gene in bacteria and is commonly termed as
[A] Codon
[B] Operon
[C] Genetic code
[D] None
Question No:10
Out of the 3 structural genes z, y and a, the gene (s) which gene of E. coli lac Operon code for permease.
[A] z
[B] s
[C] y
[D] Both(b)&(c)
Question No:11
Represser protein in lac operon concept binds to which gene?
[A] d
[B] i
[C] o
[D] z
Question No:12
In lac operon, the inducer binds to ______ to initiate synthesis of enzymes responsible for lactose metabolism.
[A] i gene
[B] Represser
[C] O gene
[D] Z gene
Question No:13
Lac operon operates in E. Coli _____.
[A] occasionally
[B] frequently
[C] all time
[D] sometimes
Question No:14
Generally regulation of lac operon by represser is referred to as _____ regulation.
[A] positive
[B] negative
[C] feedback
[D] both (b) and (c)
Question No:15
Considering cost of sequencing 1 bp to be US 3$, 4 the approximate cost of HGP (Human Genome Project) would come out to be _____.
[A] 3 billion
[B] 9 million
[C] 9 billion
[D] 3 million
Molecular Basis of Inheritance Model Test-8
CategoriesNEET Biology