Draw the structure of glucose and its common cyclic form.

Here are the answers to the questions:

1. Draw the structure of glucose. The structure of $\alpha$-D-glucopyranose (a common cyclic form of glucose) is a six-membered ring containing five carbon atoms and one oxygen atom.
   • The ring oxygen is typically at the top right.
   • Carbon 1 (anomeric carbon) is to the right of the oxygen. Its hydroxyl group ($\text{-OH}$) points down (for $\alpha$-anomer).
   • Carbon 2 has its $\text{-OH}$ group pointing down.
   • Carbon 3 has its $\text{-OH}$ group pointing up.
   • Carbon 4 has its $\text{-OH}$ group