Sugar molecules can combine with one another to form large molecules called a. proteins. b. starches. c. enzymes. d. lipids.

B. Starches

Explanation:

The sugar molecules are monosaccharides, they are defined as compounds derived from aldehydes or ketones, contain at least three carbon atoms in their structure and constitute the structural basis of more complex carbohydrates. They are formed by atoms of C, H and O, and cannot undergo hydrolysis processes to decompose into simpler units. There are different monosaccharide structures; In the case of sugar, it is formed by the structure called GLUCOSE.

Polysaccharides are formed by the union of hundreds of monosaccharides. In the case of glucose (sugar) they join together to form starch.

In the case of proteins and enzymes, these are also formed by the combination of smaller structures, but the same are amino acids, they are formed by atoms of C, H, O and also N, unlike monosaccharides . In addition they biologically fulfill other functions in organisms. Enzymes are proteins that fulfill the function of catalyst in biochemical reactions (this means that it helps to produce these reactions).

Lipids are structures that contain C, H and to a lesser extent O. The difference with the previous ones is that they do not join together to form more complex structures. Nor are there simpler structures than lipids to form them.

This is why, when the sugar molecules (which are glucose molecules) are combined with each other, they form much larger molecules that are called starches.