Streptococci are described as which of the following?

Streptococci are described as which of the following?

• A. Pus forming bacteria arranged in curved lines resembling a string of beads
• B. Pus forming bacteria in clusters
• C. Spherical bacteria in pairs
• D. Short rod shaped bacteria

Answer: (A)

Streptococci are spherical bacteria that divide in one plane, which causes them to form long chains. This chain formation gives a curved, bead-like appearance under the microscope, like a string of beads. They are often pus-forming (pyogenic) as well, which fits the descriptive part about pus formation. The other patterns don’t match: clusters describe staphylococci, diplococci describe pairs of cocci like certain Neisseria or pneumococci, and short rods describe bacilli. So the best description is pus-forming bacteria arranged in curved lines resembling a string of beads.

Streptococci are spherical bacteria that divide in one plane, which causes them to form long chains. This chain formation gives a curved, bead-like appearance under the microscope, like a string of beads. They are often pus-forming (pyogenic) as well, which fits the descriptive part about pus formation. The other patterns don’t match: clusters describe staphylococci, diplococci describe pairs of cocci like certain Neisseria or pneumococci, and short rods describe bacilli. So the best description is pus-forming bacteria arranged in curved lines resembling a string of beads.