What shape are Streptococcus bacteria?

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Study for the 9th Grade Biology SOL Test. Prepare with flashcards and multiple choice questions, each featuring hints and explanations. Get ready for your exam!

Multiple Choice

What shape are Streptococcus bacteria?

Explanation:
Bacteria called Streptococcus are cocci, meaning they are small spheres. They divide in one plane and stay attached, forming long chains, so they often look like round or slightly elongated beads under a microscope. That combination of spherical shape and chain formation makes “oval or spherical” the best description. They aren’t rod-shaped, which would describe bacilli, nor spiral, which is seen in spirochetes and spirilla.

Bacteria called Streptococcus are cocci, meaning they are small spheres. They divide in one plane and stay attached, forming long chains, so they often look like round or slightly elongated beads under a microscope. That combination of spherical shape and chain formation makes “oval or spherical” the best description. They aren’t rod-shaped, which would describe bacilli, nor spiral, which is seen in spirochetes and spirilla.

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