Question

Glucose,fructose,and sucrose are all carbohydrates. what elements make up all carbohydrates?

Answer 1

Answer:

Carbon, Hydrogen and Oxygen

Explanation:

The chemical composition of glucose is C6H12O6

The chemical composition of fructose is C6H12O6

The chemical composition of Sucrose is C12H22O11

As we can see that all the three molecules i.e glucose, fructose and sucrose have carbon, hydrogen and oxygen in their chemical formula. However, if we consider the general definition of carbohydrates  we can see that a carbohydrate is a macro molecule composed of carbon, hydrogen and oxygen

Answer 2

All carbohydrates are made up of carbon, oxygen, and hydrogen.

The chemical formula for Glucose is $C_{6} H_{12} O_{6}$ .
The chemical formula for Fructose is the same as that of Glucose. The difference between the two is how they are structured.
The chemical formula for Sucrose is $C_{12} H_{22} O_{11}$ .

As you can see in the chemical formulas of Glucose, Fructose, and Sucrose, they are all made up of the elements carbon, hydrogen, and oxygen.