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Question

Observe the figure and
(a) Identify the process and write its name.
(b) Write the step of the process in each stage.
627416_e0f18dce47d744cd9903df6e6ef5acce.JPG

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Solution

a) The process is phagocytosis.
The antigen such as bacteria is engulfed by the white blood cells which are phagocytic such as macrophages and monocytes. A phagosome is formed inside the cell. This phagosome fuses with the lysosome to form phago-lysosome. The bacteria is lysed by the hydrolytic enzymes of the lysosome. Hence the phagocytic cells in the human body play an important role in immunity.

663714_627416_ans_81562b68d33941e28c6147e3ebba6af2.JPG

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