Gene its Nature Expression and Regulation Quiz | Gene its Nature Expression and Regulation Multiple Choice Questions and Answers

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Questions
1 The scientists involved in discovery of DNA as chemical basis of heredity were
A Avery Mac Leod and Mc carty
B Watson and Crick
C Hershey and chase
D Griffith and Avery

Answer: Avery Mac Leod and Mc carty
2 One turn of DNA possesses
A 10 base pairs
B 5 base pairs
C 1 base pairs
D 2 base pairs

Answer: 10 base pairs
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3 Initiation codon for protein synthesis are
A GUG and AUG
B AUG and GUA
C UUU and GGG
D AAU and UAA

Answer: GUG and AUG
4 New strendformation on a DNA template can be initiated only by
A RNA primer
B DNA primer
C DNA polymerase I
D DNA polymerase III

Answer: RNA primer
5 GUG specifies amino acid valine. However when functioning as initiation codon it specifies
A Methionine
B Valine
C Lysine
D Isoleucine

Answer: Methionine
6 A bacterium grown over medium having radioactive35S incorporates radioactivity in
A RNA
B Carbohydrates
C Proteins
D DNA

Answer: Proteins
7 In eukaryotes mRNA is synthesized with aid of
A RNA polymerase II
B RNA polymerase III
C Reverse transcriptase
D RNA Polymers I

Answer: RNA polymerase II
8 Codon specifies the same amino acid in brassica and homeo because codons are
A Nonambiguous
B Commaless
C Non overlapping
D Universal

Answer: Universal
9 Experimental material used by hershey and chase for providing that DNA controls heridity was
A T2 phage
B TMV
C Diplococcus pneumoniae
D Salmonella typhimurium

Answer: T2 phage
10 Bacterium in which transformation was first studied in
A Streptococcus pneumoniae
B Streptococcus aureus
C Salmonella typhimurium
D Escherichia coli

Answer: Streptococcus pneumoniae
11 Protein cannot be a genetic material because it is not
A Able to replicate
B Having diversity and specificity
C Large molecule
D Ubiquitous

Answer: Able to replicate
12 RNA which is present in minimum amount in a cell is
A mRNA
B rRNA
C tRNA
D None of the above

Answer: mRNA
13 Anti codon is made of
A Beard triplet of Nitrogen bases on tRNA
B Unpaired triplet of Nitrogen bases at one end of tRNA
C Three adjacent nitrogen bases
D Unpaired triplet basesof mRNA

Answer: Unpaired triplet of Nitrogen bases at one end of tRNA
14 Griffith effect is
A Bacterial transformation
B Bacterial transduction
C DNA transcription
D RNA translation

Answer: Bacterial transformation
15 Adaptor molecule is
A DNA
B tRNA
C mRNA
D None of the above

Answer: tRNA
16 mRNA coded language is known as
A Cryptogram
B Codogenes
C Cryptogam
D Crypto analysis

Answer: Cryptogram
17 Which of the following got Nobel Prize for discovering mobile jeans, jumping genes or transposons?
A Barbaramc clintock
B Beadle and Tatum
C Jacob and monod
D Khorana

Answer: Barbaramc clintock
18 Housekeeping genes
A Form hormones
B Function only at the time of reproduction
C Constantly operate for cellular activity
D Produce antibodies

Answer: Constantly operate for cellular activity
19 Cistron is
A Non functional unit of DNA
B Functional unit of RNA
C Functional unit of DNA
D Non functional unit of RNA

Answer: Functional unit of DNA
20 Bacterial transformation was discovered by
A Griffith
B Hershey and chase
C Avery et al
D Watson and Crick

Answer: Griffith

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