Differentiate between antigen and antibody.

Distinguish Between

Sr. No.	Antigen	Antibody
i.	Any foreign material which brings about an immune response in the body is called an antigen	Glycoproteins formed in the body to fight against antigen is called an antibody.
ii.	It triggers the formation of antibodies.	It is produced against antigens.
iii.	It may be a free molecule or component of the microbial cell surface.	It is extruded from the surface of plasma cells.
iv.	The structure of the antigen is variable.	The antibody is Y-shaped.

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Chapter 10 Human Health and Diseases
Exercises | Q 3.02 | Page 244

An antibody is ___________.

What is the Rh factor?

'Pathogens' are ______.

Which antigen would be present on the RBC surface of a person with A blood?

In the given figure of an antibody molecule, identify the labels (i, ii, and iii).

Which vector is responsible for the transmission of Plasmodium to man?

Identify the universal blood donor.

Which bonds hold together the four polypeptide chains of an antibody molecule?

Antibiotics used in the control of infectious diseases are ____________.

In an antibody, disulphide bonds are present ______.

between two heavy chains.
between two heavy chains.
between the constant region of light chain and the constant region of a heavy chain.
between antigen binding sites of both the heavy and light chains.
between the variable region of light chain and that of heavy chain.

Select the correct answer from the options given below