Notes

Jambunists, there is a question of whether the butterfly has an exoskeleton. One of you said it has a hydrostatic skeleton because a caterpillar is like an earthworm and has a hydrostatic skeleton. Well, check the Net and you'll find that a butterfly is an insect and like all insects, it has an exoskeleton. And here's some Memory Booster for you!


                        
  1. Platelets clump together and produce thrombokinase.
  2. Thrombokinase converts prothrombin to thrombin.
  3. Vitamin K is needed for the formation of prothrombin.
  4. Thrombin converts fibrinogen to fibrin.
  5. Fibrinogen is a soluble protein.
  6. Fibrin is not soluble.
  7. Fibrin forms a network to trap the erythrocyte.
  8. A clot is formed.

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