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      Question

      Based on his studies of purple and green bacteria, which

      microbiologist demonstrated that photosynthesis is essentially a light-dependent reaction in which hydrogen from a suitable oxidisable compound reduces carbon dioxide to carbohydrates?
      A Robert Koch Correct Answer Incorrect Answer
      B Cornelius van Niel Correct Answer Incorrect Answer
      C Antonie Philips van Leeuwenhoek Correct Answer Incorrect Answer
      D Selman Abraham Waksman Correct Answer Incorrect Answer

      Solution

      The correct answer is B

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