22. After phagocytosis of a microbe, vesicles called phagosomes combine with int

Question

22. After phagocytosis of a microbe, vesicles called phagosomes combine with intracellular organelles called- A) autosomes B) ribosomes C) nucleosomes D) mitochondria E) lysosomes resulting in destruction of the microbe. - 23. The extrinsic pathway of coagulation is activated by the A) release of heparin from the liver. B) release of tissue factor due to disruption of endothelium. C) conversion of prothrombin to thrombin. D) activation of a proenzyme exposed to collagen. E) sticking of platelets to damaged tissue. 24. Class II MHC molecules are found A) only on liver cells and macrophages in the spleen. B) on all cells with a nucleus. C) only on lymphocytes and macrophages. D) only on red blood cells. E) only on granulocytes and macrophages.

Explanation / Answer

22. E) lysosomes

23. B) release of tissue factor due to disruption of endothelium.

24. A) only on liver cells and macrophages in the spleen.

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