40 Questions
What is the characteristic of the prokaryotic cell wall?
Contain peptidoglycan
Which of the following is a characteristic of prokaryotic cells?
Smaller in size
What is the function of the prokaryotic cell wall?
To maintain cell shape
What is the difference between Gram (+) and Gram (-) bacteria?
Cell wall composition
What is the primary characteristic of prokaryotic microorganisms?
They are unicellular
What is the component of archaeal cell walls?
Polysaccharides and proteins
Which of the following microorganisms is NOT a type of prokaryote?
Fungi
What is the shape of Vibrio cholerae?
Spiral
What is the name of the antibiotic discovered by Alexander Fleming in 1929?
Penicillin
What is the role of fimbriae in prokaryotic cells?
Adhesion and biofilm formation
What is the process of cell division in prokaryotic cells?
Binary fission
What is the term for the 40-day period that Venetian ships remained under quarantine before approaching Venice port?
Quarantina giorni
What is the primary function of Cyanobacteria?
To produce oxygen
Which of the following is a characteristic of prokaryotic cells?
They can thrive in extreme conditions
What is the system of naming living organisms invented by Carolus Linnaeus?
Binomial nomenclature
Which of the following is an example of a prokaryotic microorganism that lives in extreme conditions?
All of the above
What is the main component of Gram-positive bacteria cell walls?
Peptidoglycan
Which of the following is a characteristic of Gram-positive bacteria?
They absorb crystal violet
What is the function of the peptidoglycan layer in Gram-positive bacteria?
To provide resistance to physical stress
What is the composition of the outer membrane of Gram-negative bacteria?
Phospholipids, proteins, and lipopolysaccharides
Which of the following bacteria is an example of Gram-negative bacteria?
Escherichia coli
What is the difference between the cell walls of Gram-positive and Gram-negative bacteria?
Gram-positive bacteria have a large amount of peptidoglycan, while Gram-negative bacteria have a small amount
Why do Gram-positive bacteria stain purple in Gram staining?
Because they absorb crystal violet
What is the function of the outer lipopolysaccharide layer in Gram-negative bacteria?
To make the bacteria resistant to lysozyme and penicillin
What is the main source of many antibiotics?
Streptomyces
What is the disease caused by Clostridium tetani?
Tetanus
What is the name of the neurotoxin produced by Clostridium botulinum?
Botulinum toxin
What is the result of botulinum toxin action at the neuromuscular junction?
Inhibition of acetylcholine release
What is the cause of death in botulism?
Respiratory muscle failure
What is the characteristic of Mycoplasmas?
They have no cell wall
What is the disease caused by Bacillus anthracis?
Anthrax
What is the name of the Gram-positive bacterium that contaminates improperly canned food?
Clostridium botulinum
What type of flagella structure is found in Spirochetes?
Axial filament
What is the function of the motor in a prokaryotic flagellum?
Provides energy for rotation
What is the name of the protein that makes up the filament in a prokaryotic flagellum?
Flagellin
What is the type of motion exhibited by Spirochetes?
Twisting
Where are the axial filaments located in Spirochetes?
In the periplasmic space
What is the location of the hook in a prokaryotic flagellum?
Outside the cell wall
What determines the rotation direction of a prokaryotic flagellum?
Clockwise or counterclockwise rotation
What is the function of the proton motive force in a prokaryotic flagellum?
Provides energy for rotation
Test your knowledge on the classification of microorganisms into prokaryotic and eukaryotic cells, including Bacteria, Archaea, Protists, and Fungi. Learn about the characteristics and categories of microorganisms, from unicellular to multicellular organisms. Discover the differences between prokaryotic and eukaryotic microorganisms.
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