Questions

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The antigen-antibody immunological reaction is used to be regarded as typical of immunological responses. Antibodies are proteins synthesized by specialized cells called plasma cells, which are formed by lymphocytes (cells from the lymph system) when an antigen, a substance foreign to an organism's body, comes in contact with lymphocytes. Two important manifestations of antigen-antibody immunity are lysis, the rapid physical rupture of antigenic cells and the liberation of their contents into the surrounding medium, and phagocytosis, a process in which antigenic particles are engulfed by and very often digested by macrophages and polymorphs. The process of lysis is executed by a complex and unstable blood constituent known as complement, which will not work unless it is activated by a specific antibody; the process of phagocytosis is greatly facilitated when the particles to be engulfed are coated by a specific antibody directed against them.

What happens when an antigen comes in contact with lymphocytes?

In the following questions, one part of the sentence may have an error. Find out which part of the sentence has an error and click the button corresponding to it. If the sentence is free from error, click the "No error" option.

They are looking forward (A)/to meet (B) /their parents (C)/No Error (D)

Which one of the following is lyophilic colloid?

What are stars primarily made of?

Which north-eastern state of India has signed up to host the 39th National Games in the year 2022?

India was able to achieve the fiscal deficit target for the Financial Year 2016-17. It was how much percent of GDP?

If price of an article decreases from Rs 800 to Rs 700, quantity demanded increases from Q1 units to 70 units. If point elasticity of demand is -1.333 find Q1?

In May 2017, the Base year of All-Indian WPI (Wholesale Price Index) has been revised from 2004-05 to ______.