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

Chemotaxis

Microbiology

7. Prokaryotic Cell Structures & Functions

Chemotaxis

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Multiple Choice

Structures external to the bacterial cell wall that is used for motility (movement) by chemotaxis:

Endospores

Capsules

Flagella

Pili

Ribosomes

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Verified step by step guidance

Begin by understanding the concept of bacterial motility, which refers to the ability of bacteria to move in response to environmental stimuli, such as chemical gradients (chemotaxis).

Identify the structures external to the bacterial cell wall that are involved in motility. These structures are typically appendages that allow bacteria to move.

Review the function of flagella, which are long, whip-like structures that rotate to propel bacteria through liquid environments. Flagella are the primary structures used by bacteria for motility.

Consider the other options provided: Endospores, Capsules, Pili, and Ribosomes. Understand that these structures have different functions, such as protection, adherence, and protein synthesis, but are not primarily involved in motility.

Conclude that flagella are the correct answer for structures used by bacteria for motility through chemotaxis, as they enable movement towards or away from chemical stimuli.