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What is the role of complement system?...

What is the role of complement system?

A

It interferes with viral replication

B

It is involved with antibody production

C

It aids antigen presentation

D

It causes cell lysis

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding the Complement System**: The complement system is a part of the immune system that enhances the ability of antibodies and phagocytic cells to clear pathogens from an organism. It consists of a series of proteins that work together to fight infections. 2. **Roles of the Complement System**: - **Enhancement of Antibody Function**: The complement system enhances the effectiveness of antibodies in opsonization, which marks pathogens for destruction by phagocytes. - **Promotion of Inflammation**: It promotes inflammation, which is crucial for recruiting immune cells to the site of infection. - **Cell Lysis**: One of the primary roles of the complement system is to cause lysis (destruction) of pathogens by forming a membrane attack complex that creates pores in the pathogen's cell membrane. 3. **Evaluating the Options**: - **Option 1: Interferes with Viral Replication**: This is incorrect. The complement system does not directly interfere with viral replication. - **Option 2: Involved with Antibody Production**: This is also incorrect. While the complement system enhances antibody function, it does not produce antibodies. - **Option 3: Aids Antigen Presentation**: This is incorrect as well. Antigen presentation is primarily the role of Major Histocompatibility Complex (MHC) molecules, not the complement system. - **Option 4: Causes Cell Lysis**: This is correct. The complement system can directly cause the lysis of pathogens. 4. **Conclusion**: The primary role of the complement system is to enhance the immune response, promote inflammation, and cause cell lysis of pathogens. ### Final Answer: The correct role of the complement system is that it causes cell lysis. ---
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