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What is the relationship between the open chain structure (I) and the cyclic forms of glucose?

Options

  1. AThey are unrelated.
  2. BThe open chain structure is a tautomer of the cyclic forms.
  3. CThe cyclic forms are intermediates in the conversion of the open chain structure.
  4. DThe cyclic forms exist in equilibrium with the open chain structure.

Correct answer

D. The cyclic forms exist in equilibrium with the open chain structure.

Step-by-step solution

The passage explains that the two cyclic forms of glucose exist in equilibrium with the open chain structure (I).

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