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BiochemistryNucleic Acids
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Q51920. Nonsense codons are present on

A.mRNA
B.tRNA
C.rRNA
D.None of these

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MCQs in BiochemistryNucleic Acids
BiochemistryNucleic Acids
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Q51921. Genetic code is said to be degenerate be- cause

A.It can undergo mutations
B.A large proportion of DNA is non-coding
C.One codon can code for more than one amino
D.More than one codons can code for the same

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MCQs in Biochemistry
BiochemistryNucleic Acids
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Q51922. All the following statements about genetic code are correct except

A.It is degenerate
B.It is unambigous
C.It is nearly universal(D) It is overlapping

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MCQs in BiochemistryNucleic Acids
BiochemistryNucleic Acids
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Q51923. All of the following statements about nonsense codons are true except

A.They do not code for amino acids
B.They act as chain termination signals
C.They are identical in nuclear and
D.They have no complementary anticodons

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MCQs in Biochemistry
BiochemistryNucleic Acids
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Q51924. A polycistronic mRNA can be seen in

A.Prokaryotes
B.Eukaryotes
C.Mitochondria
D.All of these

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MCQs in BiochemistryNucleic Acids
BiochemistryNucleic Acids
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Q51925. Non-coding sequence are present in the genes of

A.Bacteria
B.Viruses
C.Eukaryotes
D.All of these

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MCQs in BiochemistryNucleic Acids
BiochemistryNucleic Acids
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Q51926. Non-coding sequences in a gene are known as

A.Cistrons
B.Nonsense codons
C.Introns
D.Exons

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MCQs in BiochemistryNucleic Acids
BiochemistryNucleic Acids
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Q51927. Splice sites are present in

A.Prokaryotic mRNA (B) Eukaryotic mRNA
B.Eukaryotic hnRNA (D) All of these

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MCQs in BiochemistryNucleic Acids
BiochemistryNucleic Acids
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Q51928. The common features of introns include all the following except

A.The base sequence begins with GU
B.The base sequence ends with AG
C.The terminal AG sequence is preceded by a
D.An adenosine residue in branch site partici-

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MCQs in Biochemistry
BiochemistryNucleic Acids
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Q51929. A splice some contains all the following except

A.hnRNA
B.snRNAs
C.Some proteins
D.Ribosome

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MCQs in BiochemistryNucleic Acids
BiochemistryNucleic Acids
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Q51930. Self-splicing can occur in

A.Some precursors of rRNA
B.Some precursors of tRNA
C.hnRNA
D.None of these

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MCQs in BiochemistryNucleic Acids
BiochemistryNucleic Acids
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Q51931. Pribnow box is present in

A.Prokaryotic promoters
B.Eukaryotic promoters
C.Both (A) and (B)
D.None of these

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MCQs in BiochemistryNucleic Acids
BiochemistryNucleic Acids
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Q51932. Hogness box is present in

A.Prokaryotic promoters
B.Eukaryotic promoters
C.Both (A) and (B)
D.None of these

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MCQs in BiochemistryNucleic Acids
BiochemistryNucleic Acids
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Q51933. CAAT box is present in

A.Prokaryotic promoters 10 bp upstream of
B.Prokaryotic promoters 35 bp upstream of
C.Eukaryotic promoters 25 bp upstream of
D.Eukaryotic promoters 70–80 bp upstream of

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MCQs in Biochemistry
BiochemistryNucleic Acids
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Q51934. Eukaryotic promoters contain

A.TATA box 25bp upstream of transcription start
B.CAAT box 70-80 bp upstream of transcription
C.Both (A) and (B)
D.None of these

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MCQs in BiochemistryNucleic Acids
BiochemistryNucleic Acids
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Q51935. All the following statements about tRNA are correct except

A.A given tRNA can be charged with only one
B.The amino acid is recognized by the
C.The amino acid is attached to end of tRNA
D.The anticodon of tRNA finds the comple-

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MCQs in Biochemistry
BiochemistryNucleic Acids
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Q51936. All the following statements about charging of tRNA are correct except

A.It is catalysed by amino acyl tRNA synthetase
B.ATP is converted into ADP and Pi in this
C.The enzyme recognizes the tRNA and the
D.There is a separate enzyme for each tRNA

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MCQs in Biochemistry
BiochemistryNucleic Acids
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Q51937. All the following statements about recognition of a codon on mRNA by an anticodon on tRNA are correct except

A.The recognition of the third base of the codon
B.Imprecise recognition of the third base results
C.Wobble is partly responsible for the
D.Wobble results in incorporation of incorrect

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MCQs in Biochemistry
BiochemistryNucleic Acids
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Q51938. The first amino acyl tRNA which initiates translation in eukaryotes is

A.Mehtionyl tRNA
B.Formylmethionyl tRNA
C.Tyrosinyl tRNA
D.Alanyl tRNA

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MCQs in BiochemistryNucleic Acids
BiochemistryNucleic Acids
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Q51939. The first amino acyl tRNA which initiates translation in prokaryotes is

A.Mehtionyl tRNA
B.Formylmethionyl tRNA
C.Tyrosinyl tRNA
D.Alanyl tRNA

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MCQs in BiochemistryNucleic Acids
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