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Everyday Science Medium FPSC PPSC NTS Uploaded: 25 Jun 2026

Which microorganism is primarily responsible for fermenting milk into yogurt?

  • A Yeast
  • B Lactic acid bacteria
  • C Mold
  • D Virus
Correct Answer: Option B — Lactic acid bacteria
Explanation:
Lactic acid bacteria ferment lactose in milk into lactic acid which thickens the milk and gives yogurt its characteristic tangy flavor and creamy texture.
Submitted by: PaperMCQs
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