JEE Main & Advanced Chemistry Biomolecules / जैव-अणु Question Bank

done Critical Thinking Biomolecules Total Questions - 26

• question_answer1)
  Number of chiral carbons in \[\beta -D-(+)\]-glucose is                                                                  [CBSE PMT 2004; MHCET 2004]
  A)
  Three    done clear
  B)
  Four done clear
  C)
                  Five        done clear
  D)
                  Six done clear
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• question_answer2)
  The nucleic acid base having two possible binding sites is [AIIMS 2004]
  A)
                  Thymine              done clear
  B)
                  Cytosine done clear
  C)
                  Guanine               done clear
  D)
                  Adenine done clear
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• question_answer3)
  Subunits present in hemoglobin are        [AIIMS 2003]
  A)
                  2              done clear
  B)
                  3 done clear
  C)
                  4              done clear
  D)
                  5 done clear
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• question_answer4)
  A sequence of how many nucleotides in messenger RNA makes a codon for an amino acid                          [CBSE PMT 2004]
  A)
                  One       done clear
  B)
                  Two done clear
  C)
                  Three    done clear
  D)
                  Four done clear
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• question_answer5)
  Chargaff's rule states that in an organism              [CBSE PMT 2003]
  A)
  Amounts of all bases are equal done clear
  B)
  Amount of adenine A is equal to that of thymine T and the amount of guanine G is equal to that of cytosine C done clear
  C)
  Amount of adenine A is equal to that of guanine G and the amount of thymine T is equal to that of cytosine C done clear
  D)
  Amount of adenine A is equal to that of cytosine C and the amount of thymine T is equal to guanine G done clear
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• question_answer6)
  DNA multiplication is called          [Kerala (Med.) 2000]
  A)
                  Translation          done clear
  B)
                  Transduction done clear
  C)
                  Transcription      done clear
  D)
                  Replication done clear
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• question_answer7)
  Insulin is a protein which plays the role of             [KCET 1986]
  A)
                  An antibody       done clear
  B)
                  A harmone done clear
  C)
                  An enzyme         done clear
  D)
                  A transport agent done clear
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• question_answer8)
  Proteins fulfil several functions in living systems. An example of a protein which acts as a hormone is      [KCET 1985]
  A)
                  Casein   done clear
  B)
                  Oxytocin done clear
  C)
                  Trypsin done clear
  D)
                  Keratin done clear
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• question_answer9)
  Pick out the unsaturated fatty acid from the following                 [KCET 2004; MHCET 2002]
  A)
                  Stearic acid         done clear
  B)
                  Lauric acid done clear
  C)
                  Oleic acid             done clear
  D)
                  Palmitic acid done clear
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• question_answer10)
  Vitamin \[{{B}_{12}}\] contains metal [Bihar MEE 1997; RPET 1999; Pb. PMT 1999; AFMC 2002; CBSE PMT 2003; CPMT 2003; MP PMT 2003]
  A)
                  Ca (II)    done clear
  B)
                  Zn (II) done clear
  C)
                  Fe (II)    done clear
  D)
                  Co (III) done clear
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• question_answer11)
  The number of molecules of ATP produced in the lipid metabolism of a molecule of palmitic acid is [CBSE PMT 1998]
  A)
                  130         done clear
  B)
                  36 done clear
  C)
                  56           done clear
  D)
                  86 done clear
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• question_answer12)
  Protein can be most easily removed from [UPSEAT 2000, 02]
  A)
                  Alkanes                done clear
  B)
                  Alkenes done clear
  C)
                  Alkynes                done clear
  D)
                  Benzene done clear
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• question_answer13)
  The enzyme which hydrolyses triglycerides to fatty acids and glycerol is called                                    [CBSE PMT 2004]
  A)
                  Zymase                done clear
  B)
                  Pepsin done clear
  C)
                  Maltase done clear
  D)
                  Lipase done clear
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• question_answer14)
  The helical structure of protein is stabilized by [CBSE PMT 2004]
  A)
                  Ether bonds       done clear
  B)
                  Peptide bonds done clear
  C)
                  Dipeptide bonds              done clear
  D)
                  Hydrogen bonds done clear
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• question_answer15)
  The cell membranes are mainly composed of [CBSE PMT 2005]
  A)
                  Carbohydrates  done clear
  B)
                  Proteins done clear
  C)
                  Phospholipids    done clear
  D)
                  Fats done clear
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• question_answer16)
  A compound of mol. wt. 180 is acetylated to give a compound of mol. wt. 390. The number of amino groups in the initial compound is                                      [KCET 1996]
  A)
                  2              done clear
  B)
                  4 done clear
  C)
                  5              done clear
  D)
                  6 done clear
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• question_answer17)
  Starting with three different amino acid molecules, how many different tripeptide molecules are formed [Kerala PMT 1999; KCET 1999]
  A)
                  12           done clear
  B)
                  9 done clear
  C)
                  8              done clear
  D)
                  6 done clear
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• question_answer18)
  Which one of the following is a polysaccharide   [NDA 1999]
  A)
                  Nylon    done clear
  B)
                  Amylose done clear
  C)
                  Ribose  done clear
  D)
                  Polyethylene done clear
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• question_answer19)
  Which of the following is not an acidic amino acid
  A)
                  Lysine   done clear
  B)
                  Arginine done clear
  C)
                  Aspartic acid       done clear
  D)
                  Histidine done clear
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• question_answer20)
  Proteins do not respond to
  A)
                  Biuret test done clear
  B)
                  Heller's ring test done clear
  C)
                  Ninhydrin test   done clear
  D)
                  Lucas test done clear
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• question_answer21)
  Alkyl benzene sulphonates can be conductivity used as detergents in hard water, unlike soaps, as  [AMU 2002]
  A)
                  They are highly soluble in water done clear
  B)
                  Their \[C{{a}^{++}}/M{{g}^{++}}\] salts are water soluble done clear
  C)
                  They are non-ionic done clear
  D)
                  Their \[C{{a}^{++}}/M{{g}^{++}}\] salts are insoluble in water done clear
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• question_answer22)
  When glucose reacts with bromine water, the main product is   [Pb. CET 2003; BHU 2004]
  A)
                  Acetic acid           done clear
  B)
                  Saccharic acid done clear
  C)
                  Glyceraldyhyde                done clear
  D)
                  Gluconic acid done clear
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• question_answer23)
  A zwitter ion is                                  [KCET 1989]
  A)
                  A positively charged ion without a metal atom in it done clear
  B)
                  A negatively charged ion without metal atom in it done clear
  C)
                  An ion with positive and negative charges at different points on it done clear
  D)
                  A heavy ion with a small charge on it done clear
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• question_answer24)
  Ribose is an example of                [KCET 1998]
  A)
                  Ketohexose       done clear
  B)
                  Aldopentose done clear
  C)
                  Disaccharide       done clear
  D)
                  Aldohexose done clear
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• question_answer25)
  The two forms of D-glucopyranose obtained from the solution of D-glucose are called                   [IIT JEE Screening 2005]
  A)
                  Isomer  done clear
  B)
                  Anomer done clear
  C)
                  Epimer  done clear
  D)
                  Enantiomer done clear
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• question_answer26)
  Sucrose molecule is made up of                [KCET 2005]
  A)
                  A gluco pyranose and a fructo pyranose done clear
  B)
                  A gluco pyranose and a fructo furanose done clear
  C)
                  A gluco furanose and a fructo pyranose done clear
  D)
                  A gluco furanose and a fructo furanose done clear
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