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 are antibodies?

What is the total number of bones in the human body?

Which organ has finger like outgrowths which are called as Villi (Singular Villus)?

Which of the following phrases (i), (ii), and (iii) given below each sentence should replace the phrase printed in bold letters to make the sentence grammatically correct? Choose the best option among the five given alternatives that reflect the correct use of phrase in the context of the grammatically correct sentence. If the sentence is correct as it is, mark (E) i.e., "No correction required" as the answer.
The co-production agreement has already resulted in several film ventures being signed, and this would hopefully open up the market for more Indian films and television programs.
i. and this hopefully open up the market
ii. and this hopefully opened up the market
iii. and this is hopefully opening up the market

According to Dalton’s Atomic Theory, the smallest indivisible particles of matter is called ______.

Acids that contain Hydrogen and other non-metallic element(s), except Oxygen, are called

Optical fibre works on which of the following principle of light?

The SI unit of G, the universal gravitation constant is ______________.