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What does Diplococci cause when grown in pairs?

  1. Psoriasis

  2. Influenza

  3. Pneumonia

  4. Cold sores

The correct answer is: Pneumonia

Diplococci are a type of bacteria that grow in pairs. One common type of bacteria that presents as diplococci is Streptococcus pneumoniae, which causes pneumonia. Therefore, when diplococci are grown in pairs, they can cause pneumonia. Psoriasis is an autoimmune condition, Influenza is caused by a virus, and Cold sores are caused by the herpes simplex virus.