Biology Quiz on Macromolecules

Amino acid is to protein as ____________.

• fat is to lipid

• DNA is to RNA

• glucose is to starch

• sugar is to fat

What molecule does the following diagram represent?

• Amino acid

• Lipid

• Nucleic acid

• Sugar

Which of the following is true about the adjacent figure?

• A water molecule is required to join A and B

• Digestion is an example of this reaction

• The bond formed between A and B is a hydrogen bond

• The molecule B represents a monomer

• The reaction is a dehydration reaction

The molecule in the adjacent figure________________.

• is an unsaturated fatty acid

• represents a monosaccharide

• represents the amino acid structure

• is the building block of glycogen

• is found only in plant cells

Which of the following statements describes a correct difference between cellulose and starch?

• The building block of starch is fructose while the building block of cellulose is glucose

• Starch is used to maintain homeostasis in the cell while cellulose is used as a storage molecule

• Starch has 1-4 alpha monomers linkage while cellulose has 1-4 beta monomers linkage

• Starch molecules are highly branched while cellulose molecules are not branched

• Starch molecules can be synthesized in animal cells while cellulose molecules cannot

The adjacent molecule is considered a lipid molecule because it_____________.

• has a polar and nonpolar parts

• is the basic structure of the cell membrane

• has ring-shaped fatty acids

• causes problems to the heart

• is not soluble in water

What modification to liquid triglyceride can be done to make it solid at room temperature?

• Converting single bonds to double bonds by adding oxygen

• Removing glycerol from its structure

• Adding phosphate groups to the glycerol part of the triglyceride

• Adding hydrogen to the fatty acids of the triglyceride.

• Adding an enzyme that breaks down the bond between carbon and oxygen atoms

Use the adjacent figure to answer questions 8 and 9. The figure shows the_______________ structure of a protein.

• primary

• secondary

• tertiary

• quaternary

• supermolecule

What type of interaction does the letter X represent?

• Covalent bond

• Hydrogen bond

• Ionic bond

• Hydrophobic interaction

• Hydrophilic interaction

Use the figure below to answer questions 10 and 11. The molecule shown is organic because it_____________.

• contains hydrogen

• can be found only in plants

• contains oxygen

• has a ring shape

• contains carbon