Question

if you did a benedicts test and the sample turned orange, for which of the molecules is the sample positive?

Explanation:

Benedict's test is used to detect reducing sugars. A positive result, like an orange - color change, indicates the presence of a reducing sugar. The second structure shown is a monosaccharide (a type of reducing sugar). The first structure is a protein (chain of amino - acids), the third is a polysaccharide (starch), and the fourth is a lipid.

Answer:

The second option (the monosaccharide structure)