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Describe the difference between the roles of TWO named types of T cells in the immune response in humans. - HSC - SSCE Biology - Question 21 - 2013 - Paper 1
Question 21
Describe the difference between the roles of TWO named types of T cells in the immune response in humans.
Worked Solution & Example Answer:Describe the difference between the roles of TWO named types of T cells in the immune response in humans. - HSC - SSCE Biology - Question 21 - 2013 - Paper 1
Step 1
Named Type of T Cell 1: Helper T Cells
Answer
Helper T cells (Th cells) play a crucial role in the immune response by assisting other cells in the immune system. They activate B cells to produce antibodies and help activate cytotoxic T cells, ensuring a coordinated response to pathogens. Helper T cells are essential for the adaptive immune response and play a central role in maintaining immune memory.
Step 2
Named Type of T Cell 2: Cytotoxic T Cells
Answer
Cytotoxic T cells (Tc cells), also known as killer T cells, directly attack and destroy infected cells and cancerous cells. They recognize infected cells through specific antigens presented by Major Histocompatibility Complex (MHC) molecules and induce apoptosis in these cells, contributing to the clearance of infections and tumor surveillance.