NEET Biology Biological Classification And System Of Classification / जैविक वर्गीकरण और वर्गीकरण की प्रणाली Question Bank

done Life Cycle or Reproduction In Bacteria Total Questions - 30

• question_answer1)
  Bacterial cell divides in every minute it takes one hour to fill up a cup. How much time will be taken to fill half the cup [CPMT 1981, 84; DPMT 1982]
  A)
  59 minutes done clear
  B)
  30 minutes done clear
  C)
  60 minutes done clear
  D)
  29 minutes done clear
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• question_answer2)
  Under the optimum condition of temperature and nutrition most of the bacteria divide at the interval [MP PMT 1989]
  A)
  24 hours done clear
  B)
  20 minutes done clear
  C)
  60 minutes done clear
  D)
  5 minutes done clear
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• question_answer3)
  Transformation experiments using Pneumococcus bacteria led to the hypothesis that [CPMT 1988; CBSE PMT 1993, 99]
  A)
  DNA is the genetic material done clear
  B)
  Bacteria have sexual reproduction done clear
  C)
  Chromosomes are made up of DNA done clear
  D)
  RNA is the transfer link done clear
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• question_answer4)
  The process in which viruses are involved in sexual reproduction of bacteria is called   [BHU 1977, 81; AFMC 1982; CPMT 1993, 98, 99, 2001; MP PMT 1996; BHU 2000, 01; JIPMER 2001;         Haryana PMT 2005]
  A)
  Transduction done clear
  B)
  Transcription done clear
  C)
  Transformation done clear
  D)
  Translation done clear
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• question_answer5)
  Bacteria commonly reproduce vegetatively by [AFMC 1988]
  A)
  Binary fission done clear
  B)
  Budding done clear
  C)
  Conjugation done clear
  D)
  Oidia done clear
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• question_answer6)
  Some bacteria are not easily killed because of [MP PMT 1986]
  A)
  Chitinous wall done clear
  B)
  Endospore formation done clear
  C)
  Presence of mesosome done clear
  D)
  High tolerance done clear
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• question_answer7)
  The bacteria growing on medium and the mass so formed is called
  A)
  Thallus done clear
  B)
  Spores done clear
  C)
  Colony done clear
  D)
  Tissue done clear
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• question_answer8)
  Why the food can be kept for a longer time in cold house than in normal conditions [CPMT 1971]
  A)
  Insect can not enter done clear
  B)
  Bacterial multiplication stops done clear
  C)
  Bacterial multiplication is reduced done clear
  D)
  There is plasmolysis at low temperature done clear
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• question_answer9)
  Why bacteria can be considered fission fungi
  A)
  They show budding done clear
  B)
  They show fission done clear
  C)
  Show fission and fungal characters done clear
  D)
  Show fission and algal characters done clear
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• question_answer10)
  How many bacteria are produced in four hours if a bacterium divides once in half an hour [DPMT 1990]
  A)
  8 done clear
  B)
  64 done clear
  C)
  16 done clear
  D)
  256 done clear
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• question_answer11)
  The bacteria grown in the medium containing \[{{S}^{35}}\] as lone source of sulphur show its incorporation into [AIIMS 1994]
  A)
  DNA done clear
  B)
  Protein done clear
  C)
  RNA done clear
  D)
  None of the above done clear
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• question_answer12)
  There is no alternation of generation in Esche-richia coli because there is no [CBSE PMT 1994]
  A)
  Syngamy done clear
  B)
  Reduction division done clear
  C)
  Conjugation done clear
  D)
  None of these done clear
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• question_answer13)
  The experimental system used in studies of the discovery of replication of DNA has been [BHU 1994]
  A)
  Drosophila melanogaster done clear
  B)
  Pneumococcus done clear
  C)
  Escherichia coli done clear
  D)
  Neurospora crassa done clear
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• question_answer14)
  Pili in bacteria represent [BHU 2001]
  A)
  Extra-chromosomal genetic element done clear
  B)
  Protoplasmic outgrowths of donor cells done clear
  C)
  Small flagella done clear
  D)
  Special bacterial cilia done clear
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• question_answer15)
  In the bacterium Bacillus subtilis the cells often become attached from end to end forming long filamentous chains, which are embedded in a mass of mucilage forming a scum layer on substratum. It is called as
  A)
  Palmella stage done clear
  B)
  Torula stage done clear
  C)
  Zoogloea stage done clear
  D)
  None of the above done clear
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• question_answer16)
  A bacterial cell undergoes binary fission every twenty minutes. Starting with a single bacterium how many bacteria will be produced at the end of 3 hours
  A)
  128 done clear
  B)
  256 done clear
  C)
  512 done clear
  D)
  1022 done clear
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• question_answer17)
  Transfer of genetic information from one bacterium to another in the transduction process is through   [CBSE PMT 1998]
  A)
  Physical contact between donor and recipient strains done clear
  B)
  Conjugation between opposite strain bacterium done clear
  C)
  Bacteriophages released from the donor bacterial strain done clear
  D)
  Another bacterium having special organ for conjugation done clear
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• question_answer18)
  Conjugation in bacteria was discovered by [MP PMT 2000]
  A)
  Robert Koch done clear
  B)
  Schaudinn and Hoffmann done clear
  C)
  Lederberg and Tatum done clear
  D)
  Leeuwenhoek done clear
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• question_answer19)
  In bacteria, sexual conjugation is promoted by
  A)
  R?factor done clear
  B)
  col-factor done clear
  C)
  F?factor done clear
  D)
  None of the above done clear
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• question_answer20)
  Sex factor in bacteria is [CBSE PMT 1996; BHU 1999]
  A)
  F?replicon done clear
  B)
  Chromosomal replicon done clear
  C)
  RNA done clear
  D)
  Sex pilis done clear
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• question_answer21)
  The sexuality in bacteria was established by [MP PMT 1996]
  A)
  Lederberg and Tatum done clear
  B)
  H. J. Muller done clear
  C)
  Hargobind Khorana done clear
  D)
  Ochoa and Kornberg done clear
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• question_answer22)
  On the basis of which activity of bacteria it has been proved for the first time that DNA is genetic material
  A)
  Conjugation done clear
  B)
  Transformation done clear
  C)
  Transduction done clear
  D)
  Asexual reproduction done clear
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• question_answer23)
  How many generations are required for a bacterium to produce 1024 cells by vegetative reproduction
  A)
  256 done clear
  B)
  10 done clear
  C)
  6 done clear
  D)
  8 done clear
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• question_answer24)
  Transformation in bacteria was discovered by [MP PMT 1997, 98, 2000]
  A)
  Lederberg done clear
  B)
  Griffith done clear
  C)
  Avery et al done clear
  D)
  Tatum done clear
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• question_answer25)
  Penicillin inhibits bacterial multiplication because [CPMT 1998]
  A)
  It checks spindle formation done clear
  B)
  It destroys chromation done clear
  C)
  It inhibits cell wall formation done clear
  D)
  It checks RNA synthesis done clear
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• question_answer26)
  The process of replication in plasmid DNA, other than initiation, is controlled by [RPMT 1999]
  A)
  Plasmid gene done clear
  B)
  Bacterial gene done clear
  C)
  Cytoplasmic gene done clear
  D)
  Mitochondrial gene done clear
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• question_answer27)
  Bacteria reproduce sexually by [MP PMT 2000]
  A)
  Endospores done clear
  B)
  Transformation done clear
  C)
  Conidia done clear
  D)
  Exospores done clear
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• question_answer28)
  Transfer of DNA from one bacteria to another by contact is known as [Kerala CET 2001]
  A)
  Conjugation done clear
  B)
  Transformation done clear
  C)
  Transduction done clear
  D)
  Transcription done clear
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• question_answer29)
  Transformation experiment was performed on which of the following bacteria [CBSE PMT 2002]
  A)
  E. coli done clear
  B)
  Salmonella done clear
  C)
  Pasturella pestis done clear
  D)
  Diplococcus pneumonia done clear
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• question_answer30)
  Viral genome incorporated and integrates with bacterial genomes is refer to as [AFMC 2005]
  A)
  Prophages done clear
  B)
  RNA done clear
  C)
  DNA done clear
  D)
  Both (b) and (c) done clear
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