Question

Humoral immunity system is mediated by
A) B-cells
B) T-cells
C) NK-cell
D) Plasma cells

Answer 1

Immunity is defined as the capability of multicellular organisms to resist harmful microorganisms. Immunity involves both specific and nonspecific components. The nonspecific components act as barriers or eliminate a wide range of pathogens by developing antigens against them.Other components of the immune system adapt themselves to each new disease encountered by the immune system and can generate pathogen-specific immunity.

Complete answer:
There is a vast network of cells and tissues which are constantly on the lookout for invaders, and once an enemy is spotted, a complex attack is mounted. The immune system is spread throughout the body and many types of cells are involved in the organs, proteins, and tissues. Crucially, it can distinguish our tissue from foreign tissue — self from non-self. They also recognized and cleared away Dead and faulty cells in the immune system. Loss of immunological resistance is related to the creation of self-responsive antibodies that can deteriorate the illness, and loss of development guidelines can prompt a few sorts of B cell malignancies.

There are distinct types of T lymphocytes which contribute to the functioning of the immune system.
The first one is Helper T cells , they coordinate the immune response. Some of them communicate with other cells, and some stimulate B cells to produce more antibodies. Others attract more T cells or cell-eating phagocytes.

The second one is Killer as the name suggests, these T cells attack other cells. They are particularly useful for fighting viruses. They work by recognizing small parts of the virus on the outside of infected cells and destroying the infected cells..

Hence correct answer is option (B).

Note: Humans have many types of immunity with their specific functions.also there are many diseases that arise due to disorder in immunity. These are immunodeficiency, Autoimmunity etc.,.