Ch. 3 Macromolecules

All organic compounds contain the element

• Carbon (C)

• Nitrogen (N)

• Calcium (Ca)

• Sodium (Na)

Carbon is different from many other elements in that

• it has four electrons in its outermost energy level.

• it readily bonds with other carbon atoms.

• it can form single, double, or triple bonds with other atoms.

• All of the above

Which organic molecule below is classified as a carbohydrate?

• amino acid

• fatty acid

• nucleotide

• sugar

Animals store glucose in the form of

• cellulose

• glycogen

• wax

• lipids

Polysaccharides are

• carbohydrates

• lipids

• proteins

• unsaturated fats

All of the following are examples of carbohydrates except

• sugar

• cellulose

• steroids

• glycogen

Amino acids are monomers of

• disaccharides

• proteins

• nucleotides

• steroids

Which organic molecule below is most closely related to proteins?

• amino acids

• fatty acids

• nucleotides

• sugars

All of the following are examples of lipids except

• saturated fats

• starch

• cholesterol

• earwax

Which organic molecule below is most closely related to lipids?

• amino acids

• fatty acids

• nucleotides

• sugars