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

Introduction to Biofilms

Microbiology

7. Prokaryotic Cell Structures & Functions

Introduction to Biofilms

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Multiple Choice

Biofilms can contain which of the following:

Bacterial cells

Proteins

Archaeal cells

Polysaccharides

All of the choices are correct

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Verified step by step guidance

Understand what a biofilm is: A biofilm is a complex aggregation of microorganisms growing on a solid substrate. These microorganisms are embedded within a self-produced matrix of extracellular polymeric substances (EPS).

Identify the components of a biofilm: The EPS matrix is primarily composed of polysaccharides, proteins, and nucleic acids, which help in the structural integrity and protection of the biofilm.

Recognize the types of cells present: Biofilms can contain a variety of microbial cells, including bacterial and archaeal cells. These cells are the primary living components of the biofilm.

Consider the role of proteins: Proteins within the biofilm matrix can serve various functions, such as enzymes that facilitate nutrient acquisition or structural proteins that provide stability.

Conclude that all listed components can be part of a biofilm: Given the diverse nature of biofilms and their composition, it is correct to say that bacterial cells, proteins, archaeal cells, and polysaccharides can all be present in a biofilm.