Quiz Biological molecules

Which elements are found in fats and oils?

• Carbon, Nitrogen, Oxygen

• Carbon, Hydrogen, Oxygen

• Hydrogen, Nitrogen, Oxygen

• Carbon, Nitrogen, Hydrogen

Which elements are found in carbohydrates?

• Carbon, Nitrogen, Oxygen

• Carbon, Hydrogen, Oxygen

• Hydrogen, Nitrogen, Oxygen

• Carbon, Nitrogen, Hydrogen

A biological molecule is analysed and found to contain carbon, oxygen, hydrogen and nitrogen.

What is this biological molecule?

• Protein

• Fat

• Glucose

• Starch

What is starch made up from?

• Glucose

• Glycerol

• Amino acids

• Fatty Acids

What is glycogen made up from?

• Glucose

• Glycerol

• Amino acids

• Fatty Acids

What is protein made up from?

• Glucose

• Glycerol

• Amino acids

• Fatty Acids

What is fat made up from?

• Glucose and Amino acids

• Glycerol and Fatty acids

• Glycerol and Amino acids

• Glucose and Fatty Acids

When a food sample is heated with Benedict’s solution, an orange colour appears.

Which nutrient must be present in the food?

• Reducing sugar

• Protein

• Fat

• Starch

Which of the following turns blue-black with iodine?

• Starch

• Glucose

• Fats

• Proteins

A student has samples of food and wants to test them for proteins.

What should the student use to do this?

• Benedict's solution

• Biuret solution

• Iodine solution

• Ethanol