Organic Compounds Quiz

Which macromolecule is the most abundant on Earth?

• Nucleic Acids

• Proteins

• Lipids

• Carbohydrates

What is the main function of starch?

• Enzyme production

• Structure formation

• Hormone regulation

• Energy storage

What is the main function of cellulose in plant cells?

• Energy storage

• Structure formation

• Hormone regulation

• Enzyme production

What type of bonds join the individual cellulose molecules together?

• Peptide bonds

• Hydrogen bonds

• Ionic bonds

• Covalent bonds

Which macromolecule is formed entirely from carbon, hydrogen, and oxygen?

• Carbohydrates

• Lipids

• Proteins

• Nucleic Acids

What makes the long fatty acid chains in lipids hydrophobic?

• They dissolve in water

• They repel water molecules

• They attract water molecules

• They form hydrogen bonds with water

How are the glycerol molecule and the fatty acid chains connected in lipids?

• Ester bond

• Hydrogen bond

• Ionic bond

• Covalent bond

What determines the order of amino acids in proteins?

• Enzyme activity

• DNA

• Protein synthesis

• RNA

Which element is NOT present in proteins?

• Hydrogen

• Phosphorus

• Carbon

• Oxygen

What do proteins form in living organisms?

• Enzymes

• Energy storage

• Cell walls

• Chlorophyll