7 Questions
What is the oxygen requirement of most streptococci?
Facultative anaerobes
Which of the following describes the shape of these bacteria?
Spherical
Which type of parasite lives on the outer surface of the host?
Ectoparasite
What type of host provides nourishment and shelter for the parasite?
Definitive host
Which term refers to a parasite that lives within the host?
Endoparasite
What is the term for a parasite which can produce disease in an immunocompromised host?
Opportunistic parasite
What type of parasite visits the host only at intervals for food?
Temporary parasite
Study Notes
- Streptococci are a type of bacteria with a specific morphology
- They are Gram positive, meaning they retain the crystal violet stain during the Gram stain process
- Their shape is ovoid, or round, and they come in chains or pairs
- They are non-motile, meaning they do not move on their own
- Some streptococci are facultative anaerobes, which means they can survive with or without oxygen, while others are obligate (strict) anaerobes, which means they only grow in the absence of oxygen.
Test your knowledge of the morphology and characteristics of streptococci, including their Gram staining, shape, motility, and aerobiosis.
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