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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.

Phagocytosis is a process in which antigenic particles are _____ by and very often digested by macrophages and polymorphs.

In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one which best expresses the same sentence in Indirect/Direct speech.

The boss said to the secretary, "Bring the file that I had given to you yesterday."

An improvement in production technology will

Who has become the 1st Asian woman cricketer to play hundred T20Is?

In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.

the conclusion that can be drawn from something although it is not explicitly stated

A sentence/a part of the sentence is underlined. Four alternatives are given to the underlined part which will improve the sentence. Choose the correct alternative and click the button corresponding to it. In case no improvement is needed, click the button corresponding to “No improvement”.

After a hard days work, I just want to go home.

In the following question, out of the given four alternatives, select the one which best expresses the meaning of the given word.

Austerity

In the following questions, a word has been written in four different ways out of which only one is correctly spelt. Select the correctly spelt word.