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

7. Prokaryotic Cell Structures & Functions

Pili

Microbiology

7. Prokaryotic Cell Structures & Functions

Pili

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Multiple Choice

Which of the following is NOT a function of pili?

Gliding motility of cells

Conjugation (DNA transfer)

Antibiotic resistance

Twitching motility of cells

All are functions of pili

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Verified step by step guidance

Understand the primary functions of pili in bacteria. Pili are hair-like structures on the surface of bacterial cells that play roles in attachment, motility, and genetic exchange.

Recognize that pili are involved in conjugation, which is the process of DNA transfer between bacterial cells. This is a well-known function of pili.

Identify that pili are also involved in twitching motility, a type of movement that allows bacteria to move across surfaces.

Consider the role of pili in gliding motility. While not all bacteria with pili exhibit gliding motility, some do use pili for this purpose.

Evaluate the statement about antibiotic resistance. While pili can facilitate the transfer of genetic material that may include antibiotic resistance genes, the pili themselves do not directly confer antibiotic resistance. This is a key distinction in understanding their function.