Question

Lymphokines are
A) Chemical messengers from lymphocytes
B) Antibodies
C) Antigens
D) Meshes of lymph nodes

Answer 1

Hint:Lymphokines are the protein mediators that are produced by T cells to direct the immune system response by signaling between its cells.

Complete answer:
Lymphokines are the type of cytokines.They are produced by a type of immune cell i.e. T cells of the immune system.Cytokines are the proteins that help in signaling of the neighbouring cells.Lymphokines act to attract other immune cells to mount an immune response, for example- they stimulate B cells to generate antibodies against the invading pathogen.
Now let us get the answer from the given options:-
A) Cytokines are called chemical messengers from lymphocytes.They are the proteins that help in regulating the immune system.They facilitate communication among immune cells, which fight against invading pathogens.
B) Antibodies are also called as the immunoglobulins.They are the Y- shaped proteins produced mainly by plasma cells . They are used by the immune system to neutralize pathogens such as bacteria, viruses, etc.They bind like a lock and key to the body’s foreign invaders.
C) Antigen is a substance that is capable of stimulating an immune response in the body.They are the foreign particles entered in our body.
D) Lymph node is a kidney shaped organ of the immune system.A large number of lymph nodes are linked throughout the body by the lymphatic vessels that are called the meshes of lymph nodes.

Therefore, we have seen in the above discussion that the lymphokines are chemical messengers from lymphocytes.

Hence option ‘A’ is the correct answer.

Note:Remember that lymphokines help in regulating the immune system. They help in the communication among immune cells. Without lymphokines there will be no communication among immune cells and also no immune response occurs then.