Podcast
Questions and Answers
What is the primary function of the glycocalyx in bacteria?
What is the primary function of the glycocalyx in bacteria?
- Facilitating the movement of bacteria
- Providing a protective barrier against antibiotics
- Producing energy for bacterial growth
- Allowing bacteria to adhere to surfaces (correct)
Which bacteria is associated with respiratory tract infections in cystic fibrosis patients due to its glycocalyx?
Which bacteria is associated with respiratory tract infections in cystic fibrosis patients due to its glycocalyx?
- Staphylococcus aureus
- Escherichia coli
- Bacillus subtilis
- Pseudomonas aeruginosa (correct)
What role does the glycocalyx play in dental health?
What role does the glycocalyx play in dental health?
- It helps in the digestion of food particles.
- It prevents the demineralization of tooth enamel.
- It acts as a natural antibacterial agent against plaque.
- It contributes to the formation of dental plaque. (correct)
Which of the following is NOT a structure to which the glycocalyx allows bacteria to adhere?
Which of the following is NOT a structure to which the glycocalyx allows bacteria to adhere?
What is a significant consequence of glycocalyx production by certain bacteria?
What is a significant consequence of glycocalyx production by certain bacteria?
Study Notes
Glycocalyx
- A polysaccharide coating secreted by many bacteria.
- Covers surfaces like a film.
- Helps bacteria adhere to various structures such as skin, heart valves, prosthetic joints, and catheters.
- Important component of biofilms.
Medical Importance
- Glycocalyx-producing strains of Pseudomonas aeruginosa cause respiratory tract infections in cystic fibrosis patients.
- Glycocalyx-producing strains of Staphylococcus epidermidis and viridans streptococci cause endocarditis.
- Glycocalyx mediates adherence of Streptococcus mutans to the surface of teeth.
- Plays a key role in the formation of plaque, the precursor of dental caries.
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Description
This quiz explores the structure and significance of glycocalyx in bacteria. It covers its role in adherence to surfaces and its medical implications, especially in infections related to cystic fibrosis and dental health. Test your understanding of how glycocalyx contributes to biofilm formation and disease processes.
