Questions

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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.

Phagocytosis is a process in which antigenic particles are _____ by and very often digested by macrophages and polymorphs.

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

Water was dripping (1)/ of the trees, and (2)/ the grass was wet. (3)/No Error (4)

Amir Khusro was a

ΔXYZ is right angled at Y. If cosX = 3/5, then what is the value of cosecZ ?

If + means division, ­ means multiplication, '÷' means subtraction, x means addition, and < means less than, then which of the following is false?

The capital of the Mauryan Kingdom was located at___________

Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?

Gravitational force is maximum at which of the following place?