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  1. In a neuron the concentration of intracellular potassium and extracellular
  2. Mass of living matter at a trophic level in an area at any time is called
  3. Percentage of recombination between A and B is 9%, A and C is 17%, B and C is 26%,
  4. The gelatinous membrane covering the sensory hair cells of the ear is known as
  5. The two functional groups characteristic of sugars are