Question

T Cells are described as:

A) the body's border police
B) Helper T's, Killer T's, Suppressor T's
C) Responsible for finding infected cells in the body
D) All of the above are true

Answer 1

The false statement about T cells is that MHC II is found on most body cells and MHC I only on immune cells. Hence, option D) is correct.

Step-by-step explanation:

The question pertaining to T cells covers different aspects of their roles in the immune system. T cells, a type of white blood cell or lymphocyte, are crucial players in the body's immune response. Cytotoxic T cells (CD8+) are involved in the direct destruction of infected or cancerous cells.

While Helper T cells (CD4+) are the 'managers' of the immune system, releasing cytokines that regulate the activity of other immune cells. Suppressor T cells, also known as regulatory T cells, help in dampening the immune response and maintaining tolerance to prevent overactivity that could lead to autoimmune diseases.

'MHC II is a receptor found on most body cells, while MHC I is a receptor found on immune cells only'. In reality, Major Histocompatibility Complex (MHC) class I molecules are present on the surface of all nucleated cells, not just on immune cells, allowing them to display peptide fragments of proteins to T cells.