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71. Who discovered sex hormonhes?
  A.  Dreser
  B.  Eugen Steinach
  C.  Edward Calvin
  D.  Samuel Cohen
     
   
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72. Fermentation is a process of decompostition of an organic compound by:
  A.  catalysts
  B.  carbanions
  C.  enzymes
  D.  free radicals
     
   
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73. What are the basic units from which human spare parts can be created?
  A.  Nerve cells
  B.  Stem cells
  C.  Heart cells
  D.  Kidney cells
     
   
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74. Adherent mucoid alkaline substance covering the inner lining of stomach is to:
  A.  prevent the action of pepsin of mucosa
  B.  act against bacteria
  C.  digest starch
  D.  prevent virual infection
     
   
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75. The are of the human tongue sensitive to bitterness is restricted to:
  A.  tip
  B.  edges
  C.  posterior part
  D.  middle part
     
   
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76. Amniocentesis is a method for:
  A.  determination of the amino acids sequence
  B.  determination of foetal health conditions
  C.  inducing abortion
  D.  artificial insemination
     
   
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77. During photosysnthesis the liberated gas is:
  A.  Carbon dioxide
  B.  Hydrogen
  C.  Nitrogen
  D.  Oxygen
     
   
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78. Which of the folloing blood cells is compulsory for blood coagulation:
  A.  White Blood corpuscles
  B.  Red Blood Corpuscles
  C.  Platelets
  D.  Lymphocites
     
   
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79. Which was the first antibiotic?
  A.  Penicilin
  B.  Neomycin
  C.  Terramycin
  D.  Streptomycin
     
   
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80. Virus contains:
  A.  Nucleic acid and protein
  B.  Protein and lipid
  C.  Lipid and carbohydrate
  D.  Carbohydrate and nucleic acid
     
   
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