Glucose molecules we need to know

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Definitely know glucose, fructose, and perhaps mannose, galactose and ribose. Don't know how likely it is that you'll even get a question pertaining to cyclic sugars but know those 5 for sure.
 
you do realize there is only one 'glucose' molecule.. you're referring to carbohydrates in general (ketoses/hexoses specifically)..

I would know glucose, galactose (c-4 epimer) and fructose.. others are very low yield.
 
Yes. That's what I meant, sorry. I can recognize D or L glucose but that's it. I suppose I should memorize the rest.
 
Yes. That's what I meant, sorry. I can recognize D or L glucose but that's it. I suppose I should memorize the rest.

Just know the fructose has a 5-carbon (well I suppose one's an oxygen) ring and galactose is the C-4 epimer of glucose.
 
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