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 complement molecule is an attractant for neutrophils?

C4b.

C5a.

C3b.

C7a.

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Verified step by step guidance

Understand the role of complement molecules in the immune system. Complement molecules are part of the complement system, which enhances the ability of antibodies and phagocytic cells to clear pathogens from an organism.

Identify the specific function of each complement molecule listed in the problem. C4b, C3b, C5a, and C7a each have distinct roles in the complement system.

Focus on the molecule C5a. It is known for its role as a potent chemoattractant, meaning it attracts immune cells such as neutrophils to the site of infection.

Learn about the process of chemotaxis, which is the movement of cells towards a chemical stimulus. C5a is involved in this process by attracting neutrophils, which are a type of white blood cell crucial for fighting infections.

Review the complement cascade and the specific pathways (classical, alternative, and lectin) to understand how C5a is generated and its importance in the immune response.