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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

21. Principles of Disease

Exotoxins vs. Endotoxin Review

Microbiology

21. Principles of Disease

Exotoxins vs. Endotoxin Review

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Multiple Choice

The diphtheria toxin is secreted by Corynebacterium diphtheriae bacteria. This toxin has two components, one that binds the host cell and one that causes disease. Which of the following about the diphtheria toxin is false?

An endotoxin.

An exotoxin.

An A-B toxin.

A protein toxin.

Highly toxic.

Lethal in small doses.

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Verified step by step guidance

Understand the nature of diphtheria toxin: It is produced by Corynebacterium diphtheriae and is known for its potent effects on host cells.

Identify the characteristics of endotoxins: These are typically lipopolysaccharides found in the outer membrane of Gram-negative bacteria, not proteins.

Recognize the characteristics of exotoxins: These are proteins secreted by bacteria, often highly toxic and can be lethal in small doses.

Understand the A-B toxin structure: A-B toxins have two parts, where 'A' is the active component causing damage, and 'B' binds to the host cell.

Evaluate the options: Compare the characteristics of diphtheria toxin with the definitions of endotoxin, exotoxin, A-B toxin, protein toxin, and its toxicity level to identify the false statement.