Table of contents

1. Introduction to Microbiology3h 22m
2. Disproving Spontaneous Generation1h 18m
3. Chemical Principles of Microbiology3h 38m
4. Water1h 28m
5. Molecules of Microbiology2h 23m
6. Cell Membrane & Transport3h 28m
7. Prokaryotic Cell Structures & Functions5h 52m
8. Eukaryotic Cell Structures & Functions2h 18m
9. Microscopes2h 46m
10. Dynamics of Microbial Growth4h 36m
11. Controlling Microbial Growth4h 10m
12. Microbial Metabolism5h 16m
13. Photosynthesis2h 31m
14. DNA Replication2h 25m
15. Central Dogma & Gene Regulation7h 14m
16. Microbial Genetics4h 44m
17. Biotechnology3h 0m
18. Viruses, Viroids, & Prions4h 56m
19. Innate Immunity7h 15m
20. Adaptive Immunity7h 14m
21. Principles of Disease6h 57m

19. Innate Immunity

Review of the Complement System

Microbiology

19. Innate Immunity

Review of the Complement System

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Multiple Choice

Which of the following statements about the complement system is true?

There are many methods of triggering the complement system.

There are many immune responses triggered by the complement system.

All triggers of the complement system lead to the formation of C3 convertase.

C3a and C3b result in different immune response for the complement system.

All of the above are true.

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Verified step by step guidance

Understand 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 and damaged cells, promote inflammation, and attack the pathogen's cell membrane.

Identify the triggers: The complement system can be activated through several pathways, including the classical pathway, the lectin pathway, and the alternative pathway. Each pathway involves different molecules and mechanisms to initiate the complement cascade.

Recognize the formation of C3 convertase: Regardless of the pathway that triggers the complement system, they all converge at the formation of C3 convertase, which is crucial for the subsequent steps in the complement cascade.

Differentiate the roles of C3a and C3b: C3 convertase cleaves C3 into C3a and C3b. C3a acts as an anaphylatoxin, promoting inflammation, while C3b acts as an opsonin, marking pathogens for phagocytosis and further activating the complement cascade.

Evaluate the statement: Given the understanding of the complement system, all the provided statements are true, as they accurately describe the mechanisms and outcomes of complement activation.