Questions

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.
The reason Priya was late (1)/ to the meeting is because her (2)/ flight was delayed. (3)/ No Error (4)

The maximum number of electrons that can be accommodated in M shell is

Who among the following has been awarded the Indira Gandhi Award for National Integraty on October 31, 2017?

World Wetland day is celebrated every year on ___ February.

Find the odd word/letters/number pair from the given alternatives.

From the given words, select the word which cannot be formed using the letters of the given word. CIRCUMSTANCES

Who among the following is the winner of the National Badminton Championship (Men), 2017?

Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it.

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?