Questions

In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.
lack of skill, ability, or competence

 In the following question, a word has been written in four different ways out of which only one is correctly spelt. Select the correctly spelt word.

What always works with something in its eye?

Hormone that helps regulate calcium balance

Who is the first woman to climb mount everest in the world ?

Water on the moon was discovered by

Rearrange the parts of the sentence in correct order.
In Tamil nadu,
P-cows and bulls are worshipped and celebrated
Q-on Maattu Pongal,
R-and the finale is Jallikattu

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.

One of the two important manifestations of antigen-antibody immunity is lysis while the other is