Question no 12
Both

Question no 12 Both QIL 13. vs an constituent of chlorophyll and also nets as enzyme activator. c) element is present in amino acids like cysteine and melhionine. d) element plays pivotal role in opening and closing of stomata. Comment on the following: a) Occupational respiratory disorder b) Rhfactor incompatibility disorder Narne the secretions from responsible for inflammatory reactions. Give example of q 1.5+0.5) orr such inflammatory reaction. Or. • be the process of blood coagulation. SECTION-C coy Elwidate following citing biological reasons : a) Euglenoids represent case of taxonomic enigma. b) Viroids are biologically different from viruses. c) Lichens are more abundant in forests than in city like Kolkata.

Dear student
Histamine released by the basophils during inflammation which triggers vasodilation and increases vascular permeability. Histamine is released immediately when these cells are injured.

For example - Histamine cause inflammation in the local reaction of bodily tissues to injury caused by physical damage, infection, or allergic reactions.

Or

Steps involved in blood coagulation -
1. A complex known as a prothrombin activator is produced by a long sequence of chemical reactions.

2. The prothrombin activator converts a blood protein called prothrombin into another protein called thrombin.

3. Thrombin converts a soluble blood protein called fibrinogen into an insoluble protein called fibrin.

4. Fibrin exists as solid fibres which form a tight mesh over the wound. The mesh traps platelets and other blood cells and forms the blood clot.

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