Biological Molecules Quiz

Which three chemical elements are found in all carbohydrates, fats, and proteins?

• Carbon, Hydrogen, Nitrogen

• Carbon, Hydrogen, Oxygen

• Carbon, Nitrogen, Oxygen

• Hydrogen, Nitrogen, Oxygen

A student is told that a large biological molecule is a polymer. What does this mean?

• It is made of fatty acids and glycerol.

• It is a long chain made of small, repeating units called monomers.

• It is a chemical element found only in living things.

• It always contains the element Nitrogen.

What is the small monomer molecule that joins together to make starch?

• Amino Acid

• Fatty Acid

• Glycerol

• Glucose

A key difference between proteins and carbohydrates is that proteins always contain which element?

• Carbon

• Hydrogen

• Oxygen

• Nitrogen

Which of the following large molecules is made from amino acids?

• Starch

• Fat

• Protein

• Glycogen

A student wants to represent the structure of a fat molecule. Which smaller molecules should they use as building blocks?

• Many glucose molecules

• Many amino acid molecules

• Fatty acids and glycerol

• Only fatty acid molecules

Which of these large biological molecules is NOT a polymer?

• Starch

• Protein

• Fat

• Glycogen

The main activity of the lesson focused on two key concepts. What were they?

• The elements in molecules and the food tests for them.

• The elements in molecules and their smaller building blocks.

• The building blocks of molecules and their functions in the body.

• The food tests for molecules and their chemical structures.

Which biological molecule is made by joining amino acids together?

• fat

• protein

• carbohydrate

• water

A group of organic molecules that includes sugars, starch, and cellulose are called...

• proteins

• carbohydrates

• nucleic acids

• lipids