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ExamsNEETBiology

The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorised as:

  1. Cyanobacteria
  2. Archaebacteria
  3. Chemosynthetic autotrophs
  4. Heterotrophic bacteria

Correct answer: Heterotrophic bacteria

Solution

Heterotrophic bacteria use ready-made organic compounds, and many of them are the useful microbes involved in fermentation and antibiotic production. Lactobacillus helps convert milk into curd, and several antibiotic-producing species are also heterotrophs.

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