Questions

Which one of the following viruses is responsible for the recent death of lions in Gir National Park?

The question below consists of a set of labelled sentences. These sentences, when properly sequenced form a coherent paragraph. Select the most logical order of sentences from among the options.

P: The main manifestations of violence in recent times have been extremism, terrorism, assassination by bombs and bullets.
Q: In the modern world, violence has taken many forms, each signifying the evil side of man and his design to destroy the principle of equity, justice and truth.
R: Another related activity is the hijacking of aircrafts, vehicles etc.
S: A new dimension to the cult of violence has been added by the cult of kidnapping of innocent person and subsequent black mail.

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

I said to my sister, "where were you this evening?"

Process of loosing electrons is known as _____.

In the following question, out of the four alternatives, select the word opposite in meaning to the word given.
Ensconce

Homeostasis is the condition in which the body maintains

Which process requires cellular energy?

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 are antibodies?