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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

19. Innate Immunity

First-Line Defenses: Chemical Barriers

Microbiology

19. Innate Immunity

First-Line Defenses: Chemical Barriers

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Multiple Choice

Lysozyme is effective at destroying bacteria pathogens because it does what?

Waterproofs skin.

Disrupts the bacterial cell membrane.

Hydrolyzes peptidoglycan cell walls.

Propels the cilia of the gastrointestinal tract.

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Verified step by step guidance

Understand the role of lysozyme: Lysozyme is an enzyme that plays a crucial role in the immune system by targeting bacteria.

Identify the structure targeted by lysozyme: Lysozyme specifically targets the peptidoglycan layer, which is a major component of bacterial cell walls.

Explain the action of lysozyme: Lysozyme hydrolyzes the bonds between the sugars in the peptidoglycan, leading to the breakdown of the cell wall.

Consider the consequences of cell wall disruption: The hydrolysis of peptidoglycan weakens the bacterial cell wall, causing the cell to lyse due to osmotic pressure.

Differentiate from other options: Lysozyme does not waterproof skin, disrupt cell membranes, or propel cilia; its primary function is to hydrolyze peptidoglycan in bacterial cell walls.