InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
Identify the correct order of organisation of genetic material from largest to smallest :A. Chromosome, gene, genome, nucleotideB. Genome, chromosome, nucleotide, geneC. Genome, chromosome, gene, nucleotideD. Chromosome, genome, nucleotide, gene |
| Answer» Correct Answer - C | |
| 102. |
Assertion A single-strand of mRNA is capable of forming different polypeptide chains Reason Termination codons occur in mRNAA. Both Assertion and Reason are true and the Reason is a correct explanation of the AssertionB. Both Assertion and Reason are true and the Reason is not the correct explanation of the AssertionC. Assertion is true, but the Reason is falseD. Assertion is false, but the Reason are false |
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Answer» Correct Answer - B In prokaryotes, a single mRNA molecule may code for one or several polypeptide chains . If it carries the code for only polypeptide the mRNA is monocistronic and if it codes for two or more different polypeptides the mRNA is polycistronic in eukaryotes most mRNAs are monocistronic Termination codons like UAA, UGA, UAG etc. are present on mRNA and capable to release the polypeptide chain |
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| 103. |
With four bases the number of possible triplet codons isA. 24B. 32C. 48D. 64 |
| Answer» Correct Answer - D | |
| 104. |
Assertion : The tRNA molecules posses anticondons. Reason It needs the message in form of codon.A. Both Assertion and Reason are true and the Reason is a correct explanation of the AssertionB. Both Assertion and Reason are true and the Reason is not the correct explanation of the AssertionC. Assertion is true, but the Reason is falseD. Assertion is false, but the Reason are false |
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Answer» Correct Answer - B tRNA has anticodons, which read the message expressed in the form of codons in mRNA and occupy a speciic place on mRNA, tRNA also recognises the amino acids |
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| 105. |
A complex of ribosomes attached to a single strand of RNA is known asA. PolymerB. PolypeptideC. Okazaki fragmentD. Polysome |
| Answer» Correct Answer - D | |
| 106. |
The process of copying genetic information from one strand of DNA to RNA is termed as ________ .A. TranslationB. TransaminationC. ReplicationD. Transcription |
| Answer» Correct Answer - D | |
| 107. |
The sequences of nucleotides in yeast, a little away from the starting point, which are responsible for transcription areA. TGTG AAAB. TAT GGGC. TATAAAAD. GAGAAAA |
| Answer» Correct Answer - C | |
| 108. |
Length of mRNA/DNA that carries information for complete polyeptide synthesis isA. mutonB. codonC. operonD. cistron |
| Answer» Correct Answer - D | |
| 109. |
Central dogma of genetic information is modified by the discovery of `:`A. Reverse transcriptaseB. DNA polymeraseC. RNA polymeraseD. Ligase |
| Answer» Correct Answer - A | |
| 110. |
During protein synthesis, amino acid gets attached to tRNA with the help ofA. ribosome, sigma and rho (p) factorsB. mRNA, DNA and tRNA respectivelyC. aminoacyl tRNA synthesisD. tRNA |
| Answer» Correct Answer - C | |
| 111. |
Formation of mRNA for DNA isA. TranslationB. TranscriptionC. TransformationD. Transduction |
| Answer» Correct Answer - B | |
| 112. |
Nucleotides isA. Nitrogen base+ phosphateB. phosphate+sugarC. nitrogen base+sugarD. nitrogenbase+sugar+phosphate |
| Answer» Correct Answer - D | |
| 113. |
Which the amino acids activated in the presense of ATP and linked to their congnate tRNA, the process is calledA. activation of tRNAB. aminoacylation of tRNAC. initiation of tRNAD. None of these |
| Answer» Correct Answer - B | |
| 114. |
Extracharomosomal DNA is present inA. nucleusB. glyoxysomeC. ribosomeD. chloroplast |
| Answer» Correct Answer - D | |
| 115. |
The okazaki fragments on the lag strand are joined together by the enzymeA. DNA helixB. DNA ligaseC. DNA polymerase-IID. DNA polymerase-II |
| Answer» Correct Answer - B | |
| 116. |
A nitrogenous base is linked to the pentose sugar through `:`A. phosphodiester bondB. hydrogen bondC. glycosidic bondD. None of these |
| Answer» Correct Answer - C | |
| 117. |
A nitrogenous base not present in RNA isA. AdenineB. CytosineC. ThymineD. Guanine |
| Answer» Correct Answer - C | |
| 118. |
tRNA has the function ofA. transcriptionB. adopter for attaching acids over mRNA templateC. transfrring information to mRNAD. carry genetic code to cytoplasm |
| Answer» Correct Answer - B | |
| 119. |
RNA polymerase I catalyses `:`A. elongation in transcriptionB. rRNA synthesisC. mRNA synthesisD. tRNA synthesis |
| Answer» Correct Answer - B | |
| 120. |
In a DNA strand the nucleotides are linked together byA. glycosidic bondsB. phosphodiester bondsC. peptide bondsD. hydrogen bonds |
| Answer» Correct Answer - B | |
| 121. |
Which of the following is an initiation codon inA. UAGB. UGAC. UAAD. AUG |
| Answer» Correct Answer - D | |
| 122. |
Transcription I. IS the coping of a complementary mRNA on a DNA strand II. Requires a template, activated precursors, a divalent metal ion and RNA polymerase III. Is the first step in activation of amino acid IV. Directs the order of specific amino acids to form a polypeptide or proteinA. I and IIB. III and IVC. I and IIID. II and IV |
| Answer» Correct Answer - A | |
| 123. |
During transfer of genetic information in the the form of Protein , codon and anticodan belong toA. DNA, mRNA and tRNA respectivelyB. mRNA, DNA and tRNA respectivelyC. DNA, tRNA and mRNA respectivelyD. tRNA, mRNA and DNA respectively |
| Answer» Correct Answer - A | |
| 124. |
The genomic RNA is double stranded inA. reovirusB. wound tumour virusC. Both (a) and (b)D. TMV |
| Answer» Correct Answer - B | |
| 125. |
While analysing the DNA of an organism a total number of 5386 nucleotides were found out of which the proportion of different bases were : Adenine = 29 % , Guanine = 17 % , Cytosine = 32 % , Thymine = 17 % Considering the Chargaffs rule it can be concluded that :A. it is a double - stranded circular DNAB. it is single - stranded DNAC. it is a double - stranded linear DNAD. No conclusion can be drawn |
| Answer» Correct Answer - B | |
| 126. |
RNA polymerse which is on the promoter, moves to the structural genes to transcribe them. However, it happens when:A. RNA polymerase shifts first to regulator geneB. inducer binds to structural genesC. there is repressor on the operatorD. there is no repressor on the operator |
| Answer» Correct Answer - D | |
| 127. |
Which of the following elements is not present in nitrogenous base?A. NB. HC. PD. C |
| Answer» Correct Answer - C | |
| 128. |
In a double-stranded DNA, the sequence of base pairs in one strand are AGCTAAGC.What is the complementary sequence on the other strand?A. TCGATTCGB. UCGAUUCGC. AGCTAAGCD. CAUTAUCG |
| Answer» Correct Answer - A | |
| 129. |
Which of the following is not involved in the formation of a eukaryotic transcription initiation complex?A. Transcription factorsB. snRNAC. RNA polymerase-IID. promoter |
| Answer» Correct Answer - B | |
| 130. |
In eukaryotic genes, coding sequences are called :A. IntronsB. ExonsC. Regulatory sequenceD. Histones |
| Answer» Correct Answer - B | |
| 131. |
Which of the following will be translated into a protein?A. UAA AUG CCC TCC ATT ATGB. AUG CCC UCC AUA GUA GTCC. UAA CCC UCC AUA GUA GUCD. AUG CCC UCU AUG GUC UAG |
| Answer» Correct Answer - D | |
| 132. |
All of the following are transcribed from DNA exceptA. exonsB. intronsC. rRNAD. DNA |
| Answer» Correct Answer - D | |
| 133. |
All of the following would be found in a eukaryotic cell exceptA. mRNAB. rRNA synthesisC. simultaneous transcription and translationD. snRNA |
| Answer» Correct Answer - D | |
| 134. |
Which of the following is transcribed and then translated to form a protein product?A. Gene for tRNAB. IntronsC. Gene for a transcription factorD. Leader and trailer |
| Answer» Correct Answer - C | |
| 135. |
Gene regulation governing lactose operon of E. coli that involves the lac I gene product isA. Positive and inducible because it can be induced by lactoseB. Negative and inducible because repressor protein prevents transcriptionC. Negative and repressible because repressor protein prevents transcriptionD. Feedback inhibition because excess of `Beeta-galactosidase can swich off transcription |
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Answer» Correct Answer - B Lac I gene prodeces an inhibitor or repressor that induces negative regulation of lac operon promoter from binding to RNA operater gene and repress promoter from binding to RNA polymerase Repressor is meant to block the operator gene so that structural genes are unable to form mRNA thus, stopping the transcription of genes |
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| 136. |
Prokaryotic ribosomes have rRHA isA. 23SB. 16SC. 5SD. All of these |
| Answer» Correct Answer - D | |
| 137. |
Which of the following statements is correct?A. Glucose acts as inducer for lac operonB. Galactose acts as inducer for lac operonC. Glucose or galactose acts as inducer for lac operonD. Glucose or galactose cannot acts as inducer for lac operon |
| Answer» Correct Answer - D | |
| 138. |
Structure components of mRNA includeA. capB. poly-A sequenceC. non-coding regionD. All of the above |
| Answer» Correct Answer - D | |
| 139. |
The gene, which producers mRNA has specific start and stop signals, which have the same structure whether they are read from left to right to left. This is becauseA. the base sequence is the same either wayB. they have the same base repeated many timesC. they have only one baseD. they have only one codan |
| Answer» Correct Answer - A | |
| 140. |
UAA, UAG and UGA are known as non - sense codons because theyA. code for amino acids, which are not essential amino acidsB. code for the initiator amino acid (menthionine), which is later removed from the polypeptide chainC. are never present on mRNAD. do not code for any amino acid |
| Answer» Correct Answer - D | |
| 141. |
Avery et al. used `:`A. DNaseB. RNaseC. ProteaseD. All of these |
| Answer» Correct Answer - A | |
| 142. |
Viruses grown in the presence of radioactive phosphorus contained radioactive DNA, but not radioactive protein becauseA. DNA contains phosphorus , but protein does notB. DNA contains deoxyribose sugar , but protein does notC. protein contains radioactive sulphur, but DNA does notD. protein contains radioactive carbon , but DNA does not |
| Answer» Correct Answer - A | |
| 143. |
A bacteriophage with radioactive DNA and protein when infects a bacterium the radioactivity inside the bacterium will be located in `:`A. DNAB. proteinC. Both (a) and (b)D. All parts of bacterial cell |
| Answer» Correct Answer - C | |
| 144. |
Consider the following statements. The genetic codes said to be degenerate and universal, which means that, I. Amino acids may have more than one codon II. All amino acids have more than one codon. III. Codons are common for higher and lower organism IV. Codons are not found in bacteriaA. I, II and IIIB. I and IIC. I, II and IVD. I and III |
| Answer» Correct Answer - A | |
| 145. |
DNA is present inA. nucleusB. chloroplastsC. mitochondriaD. All of these |
| Answer» Correct Answer - D | |
| 146. |
The equivalent of a structural gene isA. MutonB. CistronC. OperonD. Recon |
| Answer» Correct Answer - B | |
| 147. |
Which one is DNA nitrogen base with single ring structuralA. UracilB. ThymineC. AdenineD. Guanine |
| Answer» Correct Answer - B | |
| 148. |
Which of the following are purines?A. A and GB. A and TC. G and CD. G and T |
| Answer» Correct Answer - A | |
| 149. |
Sigma factor factor is a component ofA. DNA ligaseB. DNA polymeraseC. RNA polymeraseD. Dissociation factor |
| Answer» Correct Answer - C | |
| 150. |
The four nitrogen base sequence which form the code words for DNA language are `:`A. UTACB. ACTUC. AGGUD. ATCG |
| Answer» Correct Answer - D | |