Gram-negative Solution – Bacteria
About the Lecture
The lecture Gram-negative Solution – Bacteria by Vincent Racaniello, PhD is from the course Microbiology: Introduction.
Included Quiz Questions
Which of the following is NOT a characteristic of Gram-negative bacteria that permits them to take in external particles?
- The hydrophobic thick murein peptidoglycan layer allows molecules to diffuse freely.
- The outer membrane has pores that allow small hydrophilic compounds to diffuse through.
- Large compounds get moved through specific transport complexes that are embedded in the membrane.
- Periplasmic spaces contain enzymes that can digest material as it comes through the outer membrane.
- The inner cell membrane has transport mechanisms that allow any materials that have been moved inside to get into the cytosol of the bacteria.
Which of the following is a structural difference in the murein of Gram-negative bacteria compared to Gram-positive bacteria?
- In Gram-negative bacteria, the murein is thinner.
- In Gram-negative bacteria, the murein is thicker.
- In Gram-negative bacteria, the murein has fewer teichoic acids.
- In Gram-negative bacteria, the murein has more teichoic acids.
- In Gram-negative bacteria, the murein is impermeable.
The cell membrane of which of the following is composed of lipopolysaccharides?
- Gram-negative bacteria
- Viruses
- Human cells
- Canine cells
- Fungi
Which of the following is also referred to as an endotoxin?
- Lipid A
- Murein
- Teichoic acid
- Lipoteichoic acid
- Lipid B
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Author of lecture Gram-negative Solution – Bacteria
Vincent Racaniello, PhD
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