Hello, My biochemistry textbook tells me that ribose and fructose give furanes. I had trouble wrapping my head around the cyclization process so I looked for other explanations and I found this one: http://web.campbell.edu/faculty/nemecz/323_lect/sugars/cyclization.html [Broken] It seems to say that ribose can take on two forms : furane or pyrane. I just wanted confirmation that linear ribose becomes a furane or a pyrane depending on which -OH connects back to the aldehyde function (if it connects to the last one, it becomes ribopyranose, if it connects to the one before last, it becomes ribofuranose). Did I get this right? Thanks!