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.

I don't have (A) / any money to (B) / spend for luxuries. (C) / No Error (D)

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.

In a strange ________________, the production and the consumption of the event become cause for concern. _______________ wonders whether newer forms of “non­caring” or violence are appearing. Somehow, silence, even __________________, quietly suppresses a meditation on such events. __________________ a professor, I can recollect the number of occasions when my students have cried as we discussed such events in class. _____________, society seems so indifferent.

In a strange ________________,

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'.

Today the cost of living(A)/is so high that many people(B)/find it difficult to make ends meet.(C)/No error(D)

In the following passage some of the words have been left out. Read the passage carefully and choose the correct answer for the given blank out of the four alternatives.

The conditions ______ which democracy can _______ are _______ to ________ ; but one thing is _______ that democracy is always a slow growth, whereas dictators may _____ to ______ and _______ a new _______ with dramatic success, under _______ conditions.

are _______ to

United Progressive Alliance was founded in?

Name the committee appointed in 1986 by Rajiv Gandhi on "Revitalisation of Panchayti Raj Institution for Democracy & Development".

The 'Quit India' movement was launched by Mahatma Gandhi in the year