Question

A _______________________ recognizes and destroys cells infected by a virus.

Answer 1

A cytotoxic T cell recognizes and destroys cells infected by a virus. They are also responsible for killing cancer cells too.

Answer 2

Answer:

c)cytotoxic T cell is the correct answer.

Explanation:

On the surface of the Cytotoxic T cell, TCR's receptors and a cluster of differentiation (CD8) receptors are present.

The cells infected by a virus produce viral proteins and these viral protein are present on their membrane

Cytotoxic T cells kill the virus-infected cell when their receptors TCR's match with the viral antigen and as they recognize the cell infected with the virus they produce cytokines that eliminate the infection.

Thus cytotoxic T cell recognizes and destroys cells infected by a virus.