Class X

Cancer of white blood cells can be referred to as
  1. Lymphoma
  2. Cervical cancer
  3. Leukemia
  4. Retinoblastoma
 Cancer may start when
  1. Diploid number of chromosomes become defective
  2. Changes occur in genes controlling cell divisions
  3. When loci start to change in chromosomes
  4. All of above
 Proximal convoluted tubule has many
  1. Thousands of holes in endothelial cells
  2. Tight junctions to hold adjacent cells together to prevent fluid passing through cells
  3. Tight junctions to hold adjacent cells together to prevent fluid passing between cells
  4. All of above
 Most common disaccharides include
  1. Maltose
  2. Sucrose
  3. Lactose
  4. All of above
Total number of different genes in human can
  1. a little less than 20, 000
  2. between 20, 000 to 25, 000
  3. between 25, 000 to 30,000
  4. above 30, 0000
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