Which of the following activates cytotoxic T cells as part of the acquired immune response against...
Which of the following activates cytotoxic T cells as part of the acquired immune response against virus infected cells?
-Virus infected cell
-Virus infected cell that presents a viral antigen on its surface
-A virale infected cell that presents both a viral antigen and a MHC class 1 protein
-A virale infected cell that presents both a viral antigen and a MHC class II protein
Which of the following is a role of macrophages in a secondary lymph organ in response to a bacterial infection.
-To release cytokines that directly help to activate cytotoxic T cells
-To release antibodies
-To convert into plasma cells
-To act as antigen presenting cells
If you can't answer the firs that's fine, the second one is the one I'm worried about. Thank you and I wish you good health.
Homework Answers
Question 1
A viral infected cell that presents both a viral antigens and a MHC class I protein.
Explanation: T cells get activate if it binds with APC which expressing MHC class I protein. APC present the viral antigen to the T cells. Then further process takes place to destroy the antigen.
Question 2
To act as antigen presenting cell
Explanation: Antigen presenting cells or APC has ability to express MHC class I and II on their surface after recognising the antigen or pathogen. Then the macrophages on the APC present this antigen to T cell.
Hope it will helpful to you. Thank you
All the best
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