Podcast
Questions and Answers
Which of the following describes why microbes are the most abundant organisms on the human body?
Which of the following describes why microbes are the most abundant organisms on the human body?
- Their large size allows them to outcompete other organisms for resources.
- Their multicellular organization facilitates efficient nutrient absorption.
- Their simple cell structure allows for rapid reproduction and adaptation in many environments. (correct)
- Their complex metabolic pathways enable them to synthesize all necessary organic molecules.
What characteristic defines bacteria as prokaryotes?
What characteristic defines bacteria as prokaryotes?
- They replicate through mitosis.
- They lack a nucleus. (correct)
- They contain multiple linear chromosomes.
- They have membrane-bound organelles.
How do flagella contribute to the survival and adaptation of bacteria?
How do flagella contribute to the survival and adaptation of bacteria?
- They enhance nutrient absorption from the surrounding environment.
- They facilitate cell division and reproduction.
- They protect bacteria from phagocytosis by immune cells.
- They enable movement towards or away from stimuli. (correct)
Why are antibiotics effective against bacterial infections but not against viral infections?
Why are antibiotics effective against bacterial infections but not against viral infections?
Which of the following represents a complex interplay between bacterial activity and host response?
Which of the following represents a complex interplay between bacterial activity and host response?
What distinguishes the production of endotoxins by Gram-negative bacteria during replication compared to during cell lysis?
What distinguishes the production of endotoxins by Gram-negative bacteria during replication compared to during cell lysis?
What is the functional significance of the bacterial cell wall?
What is the functional significance of the bacterial cell wall?
Why does the absence of a nuclear membrane in prokaryotic cells lead to faster adaptation rates compared to eukaryotic cells?
Why does the absence of a nuclear membrane in prokaryotic cells lead to faster adaptation rates compared to eukaryotic cells?
Which characteristic of bacterial flagella contributes most to their ability to navigate diverse environments?
Which characteristic of bacterial flagella contributes most to their ability to navigate diverse environments?
What is the primary mechanism by which antibiotics selectively target bacteria while minimizing harm to human cells?
What is the primary mechanism by which antibiotics selectively target bacteria while minimizing harm to human cells?
What is the role of bacterial biofilms in the progression of caries?
What is the role of bacterial biofilms in the progression of caries?
How do virulence factors contribute to the pathogenesis of periodontal disease?
How do virulence factors contribute to the pathogenesis of periodontal disease?
Why is the presence of lipopolysaccharide (LPS) in the outer membrane of Gram-negative bacteria clinically significant?
Why is the presence of lipopolysaccharide (LPS) in the outer membrane of Gram-negative bacteria clinically significant?
What benefit does the absence of membrane-bound organelles confer upon bacteria in rapidly changing conditions?
What benefit does the absence of membrane-bound organelles confer upon bacteria in rapidly changing conditions?
Why are bacterial flagella considered a key element in bacterial virulence?
Why are bacterial flagella considered a key element in bacterial virulence?
How do antibiotics that target bacterial cell wall synthesis selectively inhibit bacterial growth?
How do antibiotics that target bacterial cell wall synthesis selectively inhibit bacterial growth?
How does dental caries develop within the biofilm?
How does dental caries develop within the biofilm?
How do bacteria contribute to the development of periodontal disease?
How do bacteria contribute to the development of periodontal disease?
What role does lipopolysaccharide (LPS) play in Gram-negative bacterial infections?
What role does lipopolysaccharide (LPS) play in Gram-negative bacterial infections?
What is the selective advantage of the bacterial flagellum for species survival?
What is the selective advantage of the bacterial flagellum for species survival?
Flashcards
Most Abundant Organisms
Most Abundant Organisms
The most abundant organisms on the human body are microbes.
Prokaryotes
Prokaryotes
Prokaryotes lack a nucleus.
Bacterial Movement
Bacterial Movement
Flagellum helps bacteria move.
Killing Bacteria
Killing Bacteria
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Oral conditions caused by bacteria
Oral conditions caused by bacteria
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Gram-negative bacteria
Gram-negative bacteria
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Study Notes
- The most abundant organisms on the human body are microbes.
- Bacteria are prokaryotes, meaning they don't have a nucleus.
- Bacteria can move using a flagellum.
- Medicine that kills bacteria is antibiotics.
- Examples of oral conditions caused by bacteria are caries and periodontal disease.
- The cell wall of gram-negative bacteria produce endotoxins whilst the bacteria is replicating. Answer is false.
- The cell wall of gram-negative bacteria produce endotoxins during cell lysis. Answer is true.
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