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?

Select the synonym of
obstreperous

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.

War and Peace, an epic historical novel by Leo Tolstoy, was_____ published as Voyna i mir in 1865-69. This ____study of early 19th century Russian society, noted for its _____of realistic detail and variety of psychological______is generally regarded as one of the world's greatest novels. War and Peace is_____concerned with the histories of five aristocratic families, the members of which are _____against the_____background of Russian social life during the war against Napoleon. The_____ of war, however, is____to the story of family existence which involves Tolstoy's optimistic belief in the life-asserting ______of human existence.

______ to the story of family existence

An object having the capability to do work is said to possess

Which is an example of an endothermic reaction?

What is the precise time of earth rotation on axis?

Project Quality Management - Processes

Describe the Inputs, Tools and Techniques , Outputs included in the Quality Planning ?

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

The punishment of being kept in school after hours.