Multiple choice

Who developed the staining technique for bacteria?

  1. H. C. Grams

  2. Koch

  3. Hook

  4. Leeuwenhoek

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A Correct answer
Explanation

The Gram staining technique was developed by Hans Christian Gram in 1884. This differential staining technique separates bacteria into Gram-positive and Gram-negative based on cell wall composition. Koch developed postulates, Hook worked on cells, and Leeuwenhoek was the first to observe microorganisms.

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