Life Science Mock Test CSIR NET Exam - Part 6

This Quiz is posted with the sole aim of guiding the aspirants of 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. 
    Which one among the following is responsible for dosage compensation in female mammals?
   
   
   
   
   1.  Inactivation of one set of autosomes in both males and     females
   
   
   2.  Inactivation of X-chromosome in males
   
   
   3.  Inactivation of one of the X-chromosomes in females
   
   
   4.  Inactivation of Y-chromosome
   
   
   
   
   
   
   
   
   


2. 
   Main use of salt in diet is to ___________.
   
   
   
   
   1.  inclease solubility of food particles in water
   
   
   2.  ease the process of cooking
   
   
   3.  increase the taste
   
   
   4.  produce small amount of hydrochloric acid required for digestion
   
   
   
   
   
   
   
   
   


3. 
   In general which among the following most resistant to ionizations?
   
   
   
   
   1.  Fungi
   
   
   2.  Spore-forming bacteria
   
   
   3.  Bacteria
   
   
   4.  Both b & c
   
   
   
   
   
   
   
   
   


4. 
   Leprosy bacillus was invented by ________.
   
   
   
   
   1.  Harvey
   
   
   2.  Fleming
   
   
   3.  Hansen
   
   
   4.  Koch
   
   
   
   
   
   
   
   
   


5. 
   Which of these is a large reservoir of nitrogen that is unusable by most organisms?
   
   
   
   
   1.  space
   
   
   2.  soil
   
   
   3.  atmosphere
   
   
   4.  ocean
   
   
   
   
   
   
   
   
   


6. 
   Predator populations and types of decomposers are biotic environmental factors is an abiotic environmental factor?
   
   
   
   
   1.  average precipitation
   
   
   2.  presence of microbes 
   
   
   3.  common flora
   
   
   4.  availability of prey
   
   
   
   
   
   
   
   
   


7. 
   One nanometer is equal to ___________.
   
   
   
   
   1.  0.0001 μm
   
   
   2.  0.01 μm
   
   
   3.  0.001 μm 
   
   
   4.  0.1 μm 
   
   
   
   
   
   
   
   
   


8. 
   Raffinose is a carbohydrate and a minor constituent of sugar beets. Which class of carbohydrates from below does it belong to?
   
   
   
   
   1.  Polysaccharides
   
   
   2.  Monosaccharaides
   
   
   3.  Disaccharides
   
   
   4.  Trisaccharides
   
   
   
   
   
   
   
   
   


9. 
   For maturation of somatic embryos there is need
   
   of ____________.
   
   
   
   
   1.  Kinetin
   
   
   2.  Auxin
   
   
   3.  ABA
   
   
   4.  GA3
   
   
   
   
   
   
   
   
   


10. 
    Linnaeus gave a system of nomenclature called as _________.
    
    
    
    
    1.  Bimodal
    
    
    2.  Biphasic
    
    
    3.  Binary
    
    
    4.  Binomial
    
    
    
    
    
    
    
    
    

---