Glucose and fructose differ in what?

Question

with the formula C6H12O6

Answer 1

Please consult an organic chemistry book
and look at their structures.
A picture is worth a thousand words.

Yes glucose and fructose, and several other hexose sugars
have the same C6H12O6 formula.
The formula does not tell you the exact structure.
There could be as many as (2)^4 x (2)^5 x (2)
possible linear structures!

Glucose has a carbonyl group (C=O) attached to carbon 1, forming an aldehyde or aldo-sugar.
Fructose has it at an interior carbon 2,
forming a ketone or keto-sugar.

Also these sugars will form a ring structure, to be more stable.
via the OH group on carbon 5 forming a bond with the carbonyl carbon
Glucose, 6 member ring.
fructose, 5 member ring.

FYI
Fructose tastes twice as sweet as glucose.

Answer 2

They are isomers of each other. That means that they have the same molecular formula (C6H12O6) but different Structural formulas. Look up the structures on-line or in a chemistry book.
Generally, fructose is "fruit sugar" and glucose is a form of sugar found in blood.

Answer 3

Both have the same chemical formula, but glucose has a double-bonded oxygen with the carbon, while fructose has a double-bonded carbon on the second carbon. Glucose generally forms a hexagonal ring, while fructose forms a pentagonal ring. Also, glucose is used as the major source of energy for cellular activities. Fructose is found in fruits.

Answer 4

Glucose and Fructose are geometric isomers when compared to each other, meaning, that they both have the chemical formula C6H12O6 but Glucose is in the shape of a hexagonal ring while Fructose is in the shape of a pentagonal ring

Answer 5

Just the way they are put together.