Which category of macromolecules includes sugars and starches?

A
proteins

B
phospholipids

C
unsaturated fatty acids

D
carbohydrates

D

carbohydrates

D

Carbohydrates

The correct answer is D) carbohydrates. To arrive at this answer, we need to understand the different categories of macromolecules and their components.

Macromolecules are large molecules that are essential for life and are made up of smaller subunits called monomers. The four main categories of macromolecules are proteins, nucleic acids, lipids, and carbohydrates.

Proteins are made up of amino acids and are involved in various functions such as structure, enzymes, receptors, and transport. Phospholipids, on the other hand, are a type of lipid and are important components of cell membranes.

Unsaturated fatty acids are another type of lipid that consists of a carbon chain with one or more double bonds. They are usually liquid at room temperature and are typically found in vegetable oils.

Carbohydrates, however, are compounds made up of carbon, hydrogen, and oxygen atoms, with a general formula of (CH2O)n. They are commonly known as sugars and starches and serve as a primary source of energy for living organisms. Carbohydrates can be classified into simple sugars (monosaccharides) like glucose and fructose, as well as complex carbohydrates (polysaccharides) like starch and glycogen.

So, the category of macromolecules that includes sugars and starches is carbohydrates.