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

Endospores

Microbiology

7. Prokaryotic Cell Structures & Functions

Endospores

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Multiple Choice

An endospore contains all of the following except:

Exosporium

S-layer

Cortex

Germ Cell Wall

Spore Coat

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Verified step by step guidance

Understand the structure of an endospore: An endospore is a tough, dormant structure formed by some bacteria to survive unfavorable conditions. It has several layers that protect the genetic material inside.

Identify the components of an endospore: The main components include the exosporium, spore coat, cortex, and germ cell wall. Each of these layers has a specific function in protecting the endospore.

Examine the function of each component: The exosporium is the outermost layer, the spore coat provides chemical and enzymatic resistance, the cortex helps in dehydration and heat resistance, and the germ cell wall is the innermost layer that will become the cell wall of the vegetative cell upon germination.

Recognize what is not part of an endospore: The S-layer is a part of some bacterial cell walls but is not a component of the endospore structure.

Conclude by identifying the exception: Based on the understanding of endospore structure, the S-layer is not a component of an endospore, making it the correct answer to the problem.