21. Archaeopteyrx' is a connecting link between which of the following classes of animal?
						
					22. Nucleolus was discovered by
						
					23. Number of mitochondria in bacterial cell is
						
					24. Match List I (Conditions of chromosome) with List II (Chromosome numbers) and choose the correct answer:
  
    List-I 
    List-II 
   
  
    a. Monosomics 
    1. 2n + 2 
   
  
    b. Trisomics 
    2. 2n - 2 
   
  
    c. Nullisomics 
    3. 2n - 1 - 1 
   
  
    d. Double monosomics 
    4. 2n +1 
   
  
    e. Tetrasomics 
    5. 2n - 1 
   
						
					| List-I | List-II | 
| a. Monosomics | 1. 2n + 2 | 
| b. Trisomics | 2. 2n - 2 | 
| c. Nullisomics | 3. 2n - 1 - 1 | 
| d. Double monosomics | 4. 2n +1 | 
| e. Tetrasomics | 5. 2n - 1 | 
25. Match List-I with List-II and select the correct answer:
  
    List-I 
    List-II 
   
  
    a. Nucleus 
    1. De Duve 
   
  
    b. Chromosomes 
    2. Benda 
   
  
    c. Mitochondria 
    3. Waldeyer 
   
  
    d. Lysosome 
    4. Robert Brown 
   
						
					| List-I | List-II | 
| a. Nucleus | 1. De Duve | 
| b. Chromosomes | 2. Benda | 
| c. Mitochondria | 3. Waldeyer | 
| d. Lysosome | 4. Robert Brown | 
26. DNA is made up of
						
					27. Match List-I (Complexes) with List-II (Alternative names) and select the correct answer:
  
    List-I 
    List-II 
   
  
    a. Complex I 
    1. Succinate : CoQ reductase 
   
  
    b. Complex II 
    2. Cytochrome c oxidase 
   
  
    c. Complex III 
    3. ATPase 
   
  
    d. Complex IV 
    4. NADH/NADPH : CoQ reductase 
   
  
    e. Complex V 
    5. Reduced CoQ : cytochrome c reductase 
   
						
					| List-I | List-II | 
| a. Complex I | 1. Succinate : CoQ reductase | 
| b. Complex II | 2. Cytochrome c oxidase | 
| c. Complex III | 3. ATPase | 
| d. Complex IV | 4. NADH/NADPH : CoQ reductase | 
| e. Complex V | 5. Reduced CoQ : cytochrome c reductase | 
28. Mitotic chromosomes are made up by the coiling of a large cylindrical fibre called
						
					29. Chromosome number in any species
						
					30. The separating chromosomes during diplotene are held together at one or more points, where breaks and fusion had occured, called as
						
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