16 Questions
What is the primary factor that determines the shape of a bacterial cell?
Rigid cell wall
What is the characteristic arrangement of Cocci bacteria in Streptococci?
In chains
What is the size of Salmonella bacteria?
2-4 X 0.6 μm
What is the oxygen requirement for the growth of Obligate Anaerobes?
No oxygen
How many serotypes of Salmonella are known to exist?
Exactly 2500
What is the characteristic motility of most Salmonella serotypes?
Motile with peritrichous flagella
What is the result of a Voges-Proskauer (VP) test for Salmonella?
Negative
What type of anaerobe can grow with or without oxygen?
Facultative Anaerobe
What is a characteristic of Cocci bacteria in Staphylococci?
They are arranged in clusters
What is the oxygen requirement for the growth of Facultative Anaerobes?
They can grow with or without oxygen
What is a characteristic of Spirochetes bacteria?
They are spiral-shaped
Which of the following is a characteristic of Obligate Aerobes?
They cannot ferment or respire anaerobically
What is the result of a catalase test for Salmonella?
Positive
What is the characteristic arrangement of Cocci bacteria in Pneumococci?
In pairs
What is the characteristic of Microaerophiles regarding oxygen?
They require low levels of oxygen
What is a characteristic of Salmonella regarding lactose fermentation?
They do not ferment lactose
Learn about the different shapes and arrangements of bacterial cells, including cocci, bacilli, and spirochetes. Understand how cell wall rigidity determines shape and the characteristics of Salmonella.
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