Life Science Mock Test CSIR NET Exam - Part 15

This Quiz is posted with the sole aim of guiding the aspirants of UGC-NET /CSIR -NET Exam to the path of success. To sharpen the edges of your own intelligence and practice, in a structured and concrete manner to ensure you definite Success in your endeavor and will Pave your way for a successful career in Teaching (or) Research Profession . All the very best...... Knock the door of success......

1. 
    The size of particles in a colloidal solution is ______.
   
   
   
   
   1.  Bigger than 10-5 cm
   
   
   2.  Smaller than 10-8 cm
   
   
   3.  Between 10-8 and 10-5 cm
   
   
   4.  Smaller than 10-10 cm
   
   
   
   
   
   
   
   
   


2. 
   Theoretically, replication of DNA (double helix) could not be possible by _______.
   
   
   
   
   1.  Dispersive mode 
   
   
   2.  Semi-conservative mode
   
   
   3.  Conservative mode 
   
   
   4.  Deletion mode
   
   
   
   
   
   
   
   
   


3. 
   The DNA duplex is a eukaryotic is linear and replicates _________.
   
   
   
   
   1.  Tri-directionally 
   
   
   2.  Tetra-directionally
   
   
   3.  Mono-directionally
   
   
   4.  Bi-directionally
   
   
   
   
   
   
   
   
   


4. 
   Which one has more free energy?
   
   
   
   
   1.  Reactants
   
   
   2.  Active sites of enzyme 
   
   
   3.  Transition state of substrate
      
   
   
   4.  Products
   
   
   
   
   
   
   
   
   


5. 
   Endoplasmic reticulum is not found in ____.
   
   
   
   
   1.  Plant cells
   
   
   2.  Protista
   
   
   3.  Animal cells 
   
   
   4.  Prokaryotes
   
   
   
   
   
   
   
   
   


6. 
   Oxidation of α-carbon of phytanic acid takes place prior to β-oxidation because ________.
   
   
   
   
   1.  the chain of phytanic acid is too long
   
   
   2.  β-carbon is blocked by methyl group
   
   
   3.  enzymes can not transport phytanic acid into mitochondrial matrix
   
   
   4.  coenzyme A cannot activate phytanic acid
   
   
   
   
   
   
   
   
   


7. 
   The threshold is defined as __________.
   
   
   
   
   1.  minimum quantity of any factor that produces a perceptible effect on organism
   
   
   2.  mechanism to remove the organism from environment
   
   
   3.  maximum quantity of any factor that produces a perceptible effect on organism
   
   
   4.  mechanism to promote development of organism
   
   
   
   
   
   
   
   
   


8. 
   Which of the following can be separated from membrane by use of sodium dodecyl sulfate?
   
   
   
   
   1.  Carbohydrates 
   
   
   2.  Ribosomes
   
   
   3.  Lipids 
   
   
   4.  Polypeptides
   
   
   
   
   
   
   
   
   


9. 
   Lysosome along with food contents is called ___________.
   
   
   
   
   1.  Primary lysosome
   
   
   2.  Residual body
   
   
   3.  Secondary lysosome 
   
   
   4.  Microbody
   
   
   
   
   
   
   
   
   


10. 
    The greatest amount of energy per unit weight would be supplied to the body by which of the following ________.
    
    
    
    
    1.  Eggs 
    
    
    2.  Milk
    
    
    3.  Butter  
    
    
    4.  Potatoes 
    
    
    
    
    
    
    
    
    











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