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

21. Principles of Disease

Bacterial Pathogenesis

Microbiology

21. Principles of Disease

Bacterial Pathogenesis

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Multiple Choice

During the Covid-19 pandemic, individuals around the world were advised to wear masks covering their nose and mouth. Why is this medical advice important for decreasing the spread of the SARS-CoV-2 virus?

Face masks cover the openings to our respiratory system, which is the portal of entry for the SARS-CoV-2 virus.

Face masks cover the openings to our respiratory system, which is the portal of exit for the SARS-CoV-2 virus.

Face masks cover the openings to our digestive system, decreasing the entry of opportunistic pathogens.

A and B.

A and C.

All of the above.

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Verified step by step guidance

Understand the primary mode of transmission for SARS-CoV-2, which is through respiratory droplets that are expelled when an infected person coughs, sneezes, talks, or breathes.

Recognize that the nose and mouth are key entry points for the virus into the respiratory system, making them critical areas to protect in order to prevent infection.

Acknowledge that the nose and mouth are also key exit points for the virus, as an infected person can release viral particles into the environment through these openings.

Consider the role of face masks in blocking respiratory droplets from both entering and exiting the respiratory system, thereby reducing the spread of the virus.

Evaluate the given options: A and B are correct because they address the respiratory system as both a portal of entry and exit for the virus, while C is incorrect as it refers to the digestive system, which is not the primary concern for SARS-CoV-2 transmission.