Biological Molecules

Which of the following is an example of a polysaccharide?

• Glucose

• Sucrose

• Starch

• Fructose

Which elements are present in all carbohydrates?

• A) Carbon, Hydrogen, Oxygen

• B) Carbon, Hydrogen, Nitrogen

• C) Carbon, Oxygen, Nitrogen

• D) Carbon, Sulfur, Hydrogen

The monomers of proteins are called:

• Fatty acids

• Nucleotides

• Amino acids

• Monosaccharides

Which of the following is NOT a function of lipids?

• A) Energy storage

• B) Insulation

• C) Enzyme catalysis

• D) Cell membrane formation

What is the function of cellulose in plants?

• Energy storage

• Structural support

• Transport of nutrients

• Photosynthesis

The test for starch involves using:

• Benedict’s solution

• Biuret reagent

• Iodine solution

• Ethanol

Which of the following is a reducing sugar?

• Sucrose

• Glucose

• Starch

• Cellulose

What color change occurs when Benedict’s solution is used to test for glucose?

• Blue to red/orange

• Blue to purple

• Blue to green

• Brown to black

Which reagent is used to test for proteins?

• Iodine solution

• Benedict’s solution

• Biuret reagent

• Ethanol

What is the main function of glycogen in animals?

• Structural support

• Energy storage

• Transport of oxygen

• Enzyme function