Class IX

Through enzyme pepsin, proteins can be changed to
  1. polypeptides
  2. cellulose
  3. amino acids
  4. fatty acids
Chronic bronchitis and emphysema are more vulnerable to
  1. acid rains
  2. water pollutants
  3. smog
  4. nitrogen oxides
Meningitis results from meninges become affected through
  1. virus
  2. bacteria
  3. fungi
  4. both A and B
Motor end plate is formed
  1. at junction of two neurons
  2. when end branch of an axon touches Dendron
  3. when end branch of an axon touches an effector
  4. when synapse is busy in other tasks
When body temperature rises, several mechanism help in loosing heat but mechanism that helps in reducing heat production is
  1. reduced breathing
  2. reduced rate of metabolism
  3. excessive sweating
  4. excessive vasodilation
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