12th Class Biology Molecular basis of Inheritance / विरासत का आणविक आधार Question Bank

done Assertion And Reason (MCQs) - Molecular Basis of Inheritance Total Questions - 27

• question_answer1)

  Directions: (1-27)

  In the following questions a statement of assertion followed by a statement of reason is given.

  Choose the correct answer out of the following choices :

  Assertion: DNA acts as the genetic material in most of the organisms.

  Reason: RNA also acts as the genetic material in some viruses like HIV.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer2)

  Assertion: \[\phi \times 174\] has 5386 nucleotides in DNA.

  Reason: Lambda bacteriophage has 48502 base pairs in DNA.

   
  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer3)

  Assertion: Two nucleotides are linked through 3' - 5' phosphodiester linkage to form a nucleotide.

  Reason: More nucleotides can be joined in such a manner to form a polynucleotide chain.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer4)

  Assertion: DNA is negatively charged biomolecules in the living organism.

  Reason: Histones are set of positively charged acidic proteins around the DNA.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer5)

  Assertion: A typic nucleosome contains 200 bp of DNA helix.

  Reason  Nucleosome involves \[{{H}_{1}},\,{{H}_{2}}A,\,\,{{H}_{2}}B,\,{{H}_{3}}\]and \[{{H}_{4}}\]histone proteins.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer6)

  Assertion: DNA and RNA have the ability to direct their duplication.

  Reason: Proteins are also having a power to duplication or replication.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer7)

  Assertion: RNA is the first genetic material on this universe.

  Reason: RNA used to act as catalyst such as ribozymes.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer8)

  Assertion: Escherichia coli has only \[4\times {{10}^{6}}\] base pairs

  Reason: Human being has \[6\centerdot 6\times {{10}^{9}}\] base pairs.

   
  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer9)

  Assertion: Replication of DNA takes place at S phase of the cell cycle.

  Reason: The replication of DNA and cell division cycle should be highly coordinated.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer10)

  Assertion: S strain of Streptococcus is non virulent in nature.

  Reason: R strain of Streptococcus is virulent in nature.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer11)

  Assertion: DNA replication is said to be semi-discontinuous in prokaryotes.

  Reason: One strand is synthesized continuously and the other one discontinuously in bacteria.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer12)

  Assertion: The DNA strand that has the polarity acts as a template and is also referred to as template strand.

  Reason: The other DNA strand with polarity does not code for anything is referred to as coding strand.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer13)

  Assertion: Transcription unit in eukaryotes is monocistronic type.

  Reason: Transcription unit in prokaryotes is polycistronic type.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer14)

  Assertion: In bacteria mRNA does not require any type of processing.

  Reason: Processing is a feature of eukaryotic RNAs.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer15)

  Assertion: Methyl guanosine triphosphate is added to the 5' end of hnRNA i.e., capping.

  Reason: Adenylate residues (200-300) are added at 3' end of hnRNA is termed as tailing.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer16)

  Assertion: One codon code for only one amino acid, hence it is termed as unambiguous.

  Reason: Some amino acids are coded by more than one codon, thereby genetic code is degenerate.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer17)

  Assertion: AUG is a start or initiation codon in translation

  Reason: UAA act as stop or termination codon in translation.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer18)

  Assertion: Untranslated regions (UTR) are the features of mRNA.

  Reason: These regions codes for the formation of specific type of amino acids.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer19)

  Assertion: Lac operon has three structural genes like z, y and a.

  Reason: The y gene codes for permease, which increases permeability of the cell for a galactosidase.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer20)

  Assertion: Less than 2% of the genome code for proteins.

  Reason: The human genome contains 3164.7 million nucleotide bases.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer21)

  Assertion: hn RNA is larger than mRNA in eukaryotic cell.

  Reason: hn RNA is made up of exons and introns

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer22)

  Assertion: Genetic code is a triplet code.

  Reason: Singlet and doublet codes are insufficient as these can specify only 4 and 16 amino acids respectively out of 20.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer23)

  Assertion: Metabolic disorders result from a failure to chemically process raw materials or waste products.

  Reason: They are often caused by a defective protein, perhaps a defective enzyme, receptor, or hormone.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer24)

  Assertion: A non-overlapping code means that a base in a m-RNA is not used for different codons.

  Reason: In translating m-RNA molecules, the codons do not over flap but are read sequentially.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer25)

  Assertion: Viral infection cannot be treated with antibiotics.

  Reason: Antibiotics prevent translation, which viruses lack.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer26)

  Assertion: All organisms evolved from a common ancestor.

  Reason: Their genome follows the universal code of genetic code.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow

• question_answer27)

  Assertion: P site and A site of a ribosome are different.

  Reason: P site is present on smaller subunit and A site is present on larger subunit.

  A)
  Assertion and reason both are correct statements and reason is correct explanation for assertion. done clear
  B)
  Assertion and reason both are correct statements but reason is not correct explanation for assertion. done clear
  C)
  Assertion is correct statement but reason is wrong statement. done clear
  D)
  Assertion is wrong statement but reason is correct statement. done clear
  View Solution play_arrow