NEET Biology Principle Of Inheritance And Variation Question Bank

done Protein Synthesis Total Questions - 48

• question_answer1)
  The process by which DNA of nucleus passes genetic information to mRNA [AIIMS 1980, 81; DPMT 1986; MP PMT 1984]
  A)
  Translocation done clear
  B)
  Transcription done clear
  C)
  Translation done clear
  D)
  Transportation done clear
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• question_answer2)
  Translation is called [BHU 1987; CPMT 1996; MP PMT 2001]
  A)
  Formation of RNA from DNA done clear
  B)
  Formation of DNA from DNA done clear
  C)
  Formation of DNA from RNA done clear
  D)
  Protein formation done clear
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• question_answer3)
  Who discovered "Reverse transcription?? [MP PMT 1999; Pb. PMT 1999, 2000]
  A)
  Watson and Crick done clear
  B)
  Beadle and tatum done clear
  C)
  Temin and Baltimore done clear
  D)
  Khorana done clear
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• question_answer4)
  Repressor protein is formed from [MP PMT 1996]
  A)
  Repressor gene done clear
  B)
  Structural gene done clear
  C)
  Operator gene done clear
  D)
  Regulatory gene done clear
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• question_answer5)
  Which one process is only concerned with the transcription
  A)
  Template binding done clear
  B)
  Chain initiation done clear
  C)
  Chain elongation done clear
  D)
  Chain termination done clear
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• question_answer6)
  What is meant by sense strand
  A)
  The strand of mRNA involved in protein synthesis done clear
  B)
  The strand of tRNA which starts protein synthesis done clear
  C)
  The DNA strand which acts as a template for mRNA transcription done clear
  D)
  Gradually growing molecule of protein done clear
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• question_answer7)
  Who first suggested the idea of circular flow of genetic information
  A)
  Barry Commoner done clear
  B)
  Nirenberg done clear
  C)
  Matthaei done clear
  D)
  Phil Lader done clear
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• question_answer8)
  Process of reverse transcription was discovered by Temin in
  A)
  MS-2 bacteriophage done clear
  B)
  Rous sarcoma virus done clear
  C)
  E. coli done clear
  D)
  Neurospora done clear
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• question_answer9)
  DNA strand is directly involved in the synthesis of all the following except [AIIMS 1981]
  A)
  tRNA molecule done clear
  B)
  mRNA molecule done clear
  C)
  Another DNA strand done clear
  D)
  Protein synthesis done clear
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• question_answer10)
  Synthesis of any protein in a cell determines [CPMT 1988]
  A)
  Types of ribosomes done clear
  B)
  Mitochondria done clear
  C)
  Sequence of nucleotides in DNA done clear
  D)
  Suger and phosphate of DNA done clear
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• question_answer11)
  The genes are responsible for growth and differentiation in an organism through regulation of [MP PMT 1994]
  A)
  Translocation done clear
  B)
  Transformation done clear
  C)
  Transduction and translation done clear
  D)
  Translation and transcription done clear
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• question_answer12)
  If in a test tube, mRNA of E. coli  cells and tRNAs from the body of rats are taken and sufficient number of amino acids are put, then the polypeptide synthesized will be of the nature of
  A)
  Rat body cells done clear
  B)
  E. coli cells done clear
  C)
  Both E. coli  and rat body cells done clear
  D)
  Polypeptide synthesis will not occur done clear
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• question_answer13)
  In a cell, protein synthesis occurs by the linking together of amino acids. The base sequence of mRNA defines the primary structure of proteins because
  A)
  Amino acid molecules align directly on the polynucleotide of mRNA done clear
  B)
  It determines the order of alignment of amino acid charged tRNA molecule done clear
  C)
  There is one to one coding relationship between each base on the mRNA and each amino acid done clear
  D)
  Each amino acid is defined by a pair of bases on the mRNA done clear
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• question_answer14)
  A polypeptide of five amino acids is synthesized during protein synthesis in eukaryotic cells. Which one of the following can be the correct polypeptide
  A)
  Glycine - valine - methionine - histidine - lysine done clear
  B)
  Methionine - glycine - histidine - lysine - valine done clear
  C)
  Valine - methionine - glycine - histidine - lysine done clear
  D)
  Histidine - lysine - methionine - valine - glycine done clear
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• question_answer15)
  One strand of the given segment of DNA codes for mRNA having the sequence AUC, GCG, UCA needed for synthesis of proteins. The strand by which DNA molecule will be responsible for the above mRNA sequence is
  A)
  \[\underset{TAG}{\mathop{\underset{|}{\mathop{ATC}}\,}}\,\,\,\,\,\underset{CGG}{\mathop{\underset{|}{\mathop{GCC}}\,}}\,\,\,\,\,\underset{TAG}{\mathop{\underset{|}{\mathop{ATU}}\,}}\,\] done clear
  B)
  \[\underset{TCT}{\mathop{\underset{|}{\mathop{AGA}}\,}}\,\,\,\,\underset{CGC}{\mathop{\underset{|}{\mathop{GCG}}\,}}\,\,\,\,\underset{CTA}{\mathop{\underset{|}{\mathop{GAT}}\,}}\,\] done clear
  C)
  \[\underset{ACT}{\mathop{\underset{|}{\mathop{TGA}}\,}}\,\,\,\,\underset{GCG}{\mathop{\underset{|}{\mathop{CGC}}\,}}\,\,\,\,\underset{ATC}{\mathop{\underset{|}{\mathop{TAG}}\,}}\,\] done clear
  D)
  \[\underset{ATC}{\mathop{\underset{|}{\mathop{TAG}}\,}}\,\,\,\,\underset{GCG}{\mathop{\underset{|}{\mathop{CGC}}\,}}\,\,\,\,\underset{TCA}{\mathop{\underset{|}{\mathop{AGT}}\,}}\,\] done clear
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• question_answer16)
  If a certain group of cells utilise the amino acid glycine exclusively for protein synthesis, and if a growing culture of these cells is fed radioactive glycine, radioactivity will be found first in the
  A)
  Ribosomes done clear
  B)
  tRNA done clear
  C)
  mRNA done clear
  D)
  Mitochondria done clear
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• question_answer17)
  It has been found in many cells that ribosomes occur in chains along mRNA molecules. What is the advantage of this arrangement as compared to a situation in which ribosomes occur singly
  A)
  Fewer tRNA molecules are used in protein synthesis done clear
  B)
  Polypeptides can be produced more easily done clear
  C)
  A greater variety of polypeptides can be produced done clear
  D)
  Probability of gene mutation occurring is less done clear
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• question_answer18)
  Streptomycin and related antibiotics bind to small sub-units of ribosomes in prokaryotes and they
  A)
  Inhibit protein synthesis done clear
  B)
  Block the action of peptidyl transferase done clear
  C)
  Cause misreading of the genetic codes done clear
  D)
  Cause point mutation done clear
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• question_answer19)
  A polypeptide is produced as dictated by mRNA, the number of bases on the mRNA that code for the polypeptide portion containing N-terminal amino acid and next 13 amino acid is
  A)
  26 done clear
  B)
  36 done clear
  C)
  42 done clear
  D)
  39 done clear
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• question_answer20)
  Which of the following is genetically inert and does not transcribe messenger RNA for protein synthesis
  A)
  DNA of euchromatin done clear
  B)
  DNA of heterochromatin done clear
  C)
  DNA of euchromatin and heterochromatin done clear
  D)
  None of the above done clear
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• question_answer21)
  'Central Dogma' was proposed by [RPMT 1995]
  A)
  Crick done clear
  B)
  Beadle and Tatum done clear
  C)
  Temin and Baltimore done clear
  D)
  Klug done clear
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• question_answer22)
  Transcription is a process by which [MP PMT 1994, 2002; Manipal 1995]
  A)
  Amino acids are joined to form polypeptides done clear
  B)
  An RNA molecule is synthesized on a DNA template done clear
  C)
  An RNA molecule is synthesized within a ribosome done clear
  D)
  Two daughter strands of DNA are synthesized done clear
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• question_answer23)
  RNA which carry amino acid from the cytoplasm to the ribosome is
  A)
  m-RNA done clear
  B)
  t-RNA done clear
  C)
  r-RNA done clear
  D)
  c-RNA done clear
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• question_answer24)
  In lac operon system lac gene - I codes for [BHU 2005]
  A)
  Inducer done clear
  B)
  Repressor done clear
  C)
  Promoter done clear
  D)
  \[\beta -\]galactosidase done clear
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• question_answer25)
  Which of the following step of translation does not consume a high energy phosphate bond [CBSE PMT 1997]
  A)
  Translocation done clear
  B)
  Amino acid activation done clear
  C)
  Peptidyl transferase reaction done clear
  D)
  Aminoacyl tRNA binding to A-site done clear
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• question_answer26)
  Transcription means synthesis of [MP PMT 1997, 98]
  A)
  DNA done clear
  B)
  RNA done clear
  C)
  m-RNA done clear
  D)
  t-RNA done clear
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• question_answer27)
  The processes by which mRNA is made by DNA and protein by mRNA are respectively called as [MP PMT 1998]
  A)
  Transcription and translation done clear
  B)
  Translation and transcription done clear
  C)
  Synthesis of mRNA and protein done clear
  D)
  Replication of mRNA and protein done clear
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• question_answer28)
  In protein synthesis, the polymerization of amino acids involves three steps. Which of the following is not involved in protein synthesis [BHU 2000]
  A)
  Elongation done clear
  B)
  Transcription done clear
  C)
  Termination done clear
  D)
  Initiation done clear
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• question_answer29)
  Who proposed the 'Signal hypothesis' meant for the biosynthesis of secretory type of proteins [AFMC 2000]
  A)
  Baltimore done clear
  B)
  Camillio Golgi done clear
  C)
  Blobel and Sabatini done clear
  D)
  Sheeler and Bianchi done clear
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• question_answer30)
  Which amino acids are present in histones [Orissa JEE 2004]
  A)
  Lysine and histidine done clear
  B)
  Valine and Histidine done clear
  C)
  Arginine and lysine done clear
  D)
  Arginine and histidine done clear
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• question_answer31)
  After a mutation at a genetic locus the character of an organism changes due to the change in [CBSE PMT 2004]
  A)
  Protein synthesis pattern done clear
  B)
  RNA transcription pattern done clear
  C)
  Protein structure done clear
  D)
  DNA replication done clear
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• question_answer32)
  DNA is not directly involved with the synthesis of the following [MHCET 2002]
  A)
  m-RNA done clear
  B)
  r-RNA done clear
  C)
  t-RNA done clear
  D)
  Protein done clear
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• question_answer33)
  The central dogma of protein synthesis is [MHCET 2002]
  A)
  DNA \[\xrightarrow{\text{Translation}}m-\]RNA\[\xrightarrow{\text{Transcription}}\] protein done clear
  B)
  DNA \[\xrightarrow{\text{Transcription}}\]RNA \[\xrightarrow{\text{Translation}}\]protein done clear
  C)
  RNA \[\xrightarrow{\text{Replication}}\]DNA \[\xrightarrow{\text{Transcription}}\]protein done clear
  D)
  RNA \[\xrightarrow{\text{Transcription}}\]RNA \[\xrightarrow{\text{Translation}}\]Protein . done clear
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• question_answer34)
  During protein denaturation which of the following is disrupted [BVP 2004]
  A)
  2D structure done clear
  B)
  3D structure done clear
  C)
  Peptide bond done clear
  D)
  AA sequence done clear
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• question_answer35)
  Protein synthesis in an animal cell occurs [CBSE PMT 2005]
  A)
  Only on the ribosomes present in cytosol done clear
  B)
  On ribosomes present in cytoplasm as well as in mitochondria done clear
  C)
  Only on ribosomes attached to the nuclear envelope and endoplasmic reticulum done clear
  D)
  On ribosomes present in the nucleolus as well as in cytoplasm done clear
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• question_answer36)
  Which of the following is the simplest amino acid  [CBSE PMT 2005]
  A)
  Tyrosine done clear
  B)
  Asparagine done clear
  C)
  Glycine done clear
  D)
  Alanine done clear
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• question_answer37)
  Which of the following is not correct about translation [BCECE 2005]
  A)
  It starts with AUG done clear
  B)
  Stopped at termination codon done clear
  C)
  Based on operon model done clear
  D)
  Occurs in nucleus done clear
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• question_answer38)
  Method by which information from DNA to RNA reach [BCECE 2005]
  A)
  Transcription done clear
  B)
  Translation done clear
  C)
  Transformation done clear
  D)
  Transduction done clear
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• question_answer39)
  Which of the following inhibits protein synthesis by binding to 50 S ribosome [Orissa JEE 2005]
  A)
  Tetracycline done clear
  B)
  Streptomycin done clear
  C)
  Erythromycin done clear
  D)
  Penicillin done clear
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• question_answer40)
  Portion of gene which is transcribed but not translated is [CPMT 2005]
  A)
  Exon done clear
  B)
  Intron done clear
  C)
  Cistron done clear
  D)
  Codon done clear
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• question_answer41)
  Transcription is [Haryana PMT 2005]
  A)
  Formation of RNA from DNA done clear
  B)
  Formation of DNA from RNA done clear
  C)
  Formation of protein done clear
  D)
  Transfer or RNA done clear
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• question_answer42)
  Where Anticodon occurs in transcription [AMU 2005]
  A)
  m-RNA done clear
  B)
  t-RNA done clear
  C)
  µ-RNA done clear
  D)
  DNA done clear
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• question_answer43)
  Which enzyme plays important role in transcription [AMU 2005]
  A)
  DNA dependent RNA polymerase done clear
  B)
  DNA dependent DNA polymerase done clear
  C)
  RNA dependent DNA polymerase done clear
  D)
  RNA dependent RNA polymerase done clear
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• question_answer44)
  What is transfer of DNA ® RNA called [MP PMT 2005]
  A)
  Transcription done clear
  B)
  Translation done clear
  C)
  Protein synthesis done clear
  D)
  Central dogma done clear
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• question_answer45)
  Initiation of polypeptide chain in eukaryotic protein synthesis is induced by [AIIMS 1985]
  A)
  Methionine done clear
  B)
  Leucine done clear
  C)
  Lysine done clear
  D)
  Glycine done clear
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• question_answer46)
  If in a plant cells the ribosomes are destroyed, which of the following process will not take place
  A)
  Respiration done clear
  B)
    Photosynthesis done clear
  C)
  Fat synthesis done clear
  D)
  Protein synthesis done clear
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• question_answer47)
  What is meant by monocistronic mRNA
  A)
  Which has codons for synthesizing only one protein molecule done clear
  B)
  Which has only one codon done clear
  C)
  Which can combine with only one type of tRNA done clear
  D)
  Both (a) and (c) done clear
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• question_answer48)
  The most commonly used enzyme for polymerase chain reaction is [MP PMT 2001]
  A)
  D.N.A. polymerase-II done clear
  B)
  Reverse transcriptase done clear
  C)
  Klenow fragment done clear
  D)
  Taq polymerase done clear
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