Questions

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?

All this does not bode _______________ for even the loosest definitions of cosmopolitanism. A city by definition is a space, as ________________ historians and sociologists have already told us, which ideally privileges and _________________ the unexpected encounter, and calls on its citizens to be able to respond humanely even to those _______________ are not linked to us in familial, ethnic, nationalist or caste ___________________.

respond humanely even to those _______________ are not linked to us in familial

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

Heretic

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".

With all this my mind wandered back to my brother who (had gone) to play basketball.

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.

_______________ the course of the development of different life-forms heredity—which, in plain English, is unconscious memory generated in the first life-form and ______________ through all the different species—is the sole factor in the ____________ of the parent properties; while adaptation to surrounding conditions and circumstances, natural selection in the struggle _____________ existence, and partner selection in the struggle of the males for ____________ are the principal factors in the differentiation of species.

natural selection in the struggle _____________ existence, and partner selection

American astronaut Scott Joseph Kelly commanded the International Space Station Consecutively for 340 days on ___.

Which kind of missile is BRAHMOS?

A serial port can