Class IX

Binding of enzyme and substrate on active site is explained through
  1. hide and seek hypothesis
  2. lock and hide hypothesis
  3. lock and run hypothesis
  4. lock and key hypothesis
Before fertilization, ovary has
  1. one nucleus
  2. two nuclei
  3. three nuclei
  4. more than four nuclei
Internal reflection of light is prevented through the
  1. sclerotic coat
  2. choroid coat
  3. iris
  4. pupil
Blood platelets are also called as
  1. lymphocytes
  2. phagocytes
  3. monocytes
  4. thrombocytes
Mycoproteins has a texture of
  1. cheese
  2. proteins
  3. fats
  4. starch
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