AP Bio - Carbohydrates

The human body is capable of digesting the complex polymer starch into simpler subunits. This digestive process requires the presence of water and the enzyme amylase in order to break down starch into maltose. This is depicted below. Which of the following statements best describes the digestion of starch into maltose?

• This is a hydrolysis reaction that requires water to break down a complex polymer into simpler subunits.

• This is a dehydration synthesis reaction that produces water when forming a complex polymer from simpler subunits.

• This is a dehydration synthesis reaction that requires water to form a complex polymer from simpler subunits.

• This is a hydrolysis reaction that forms water by breaking down a complex polymer into simpler subunits.

In the reaction below, two glucose monomers combine to form the dimer maltose. Which of the following best explains the process of this reaction?

• To form a covalent bond, the monomers underwent a hydrolysis reaction.

• An ionic bond forms through dehydration synthesis, which combines the two glucose monomers and forms the maltose dimer.

• Water is added to the reaction to promote the formation of a covalent bond between the glucose monomers.

• A covalent bond forms through dehydration synthesis, which results in the formation of maltose and water.

Tags

NGSS.HS-LS1-6

What molecule is this?

• this is a monosaccharide
• this is a polysaccharide
• this is a protein
• this is a lipid

Tags

NGSS.HS-LS1-6

What are the monomers of carbohydrates?

• Nucleotides
• Amino Acids
• Fatty Acids
• Monosaccharides

Which of the following molecules is a carbohydrate?

• Palmitic Acid

• Collagen

• Insulin

• Lactose

Which of the following statements is/are true with regard to a polymer of 6 glucose molecules?

I. The chemical formula is C36H72O36

II. The chemical formula is C36H62O31

III. The monomers of glucose were joined via hydrolysis

IV. The monomers of glucose were joined via dehydration synthesis

• I only

• II only

• IV only

• I and III only

• II and IV only

Tags

NGSS.HS-LS1-6

Which of the following molecules is a carbohydrate?

• C₅₁H₉₈O₆

• C₂₂H₄₉O₁₀N₅

• C₄₅H₈₄O₈P₄

• C₆₀H₁₀₀O₅₀

Based the information provided, which of the following statements best describes why starch and cellulose provide different functions in plants?

• The differences in the assembly and organization of the monomers of these two polymers result in different chemical properties.

• Since starch and cellulose are composed of identical monomers, the cellular environment where they are located controls their function.

• The monomers of cellulose are connected by covalent bonds, making it idea for structural support.

• The monomers of starch are connected by ionic bonds, making it ideal for energy storage for plants.

Which of the following is NOT a monosaccharide?

• starch

• fructose

• glucose

• galactose

Which polysaccharide is used by plants to store glucose?

• glycogen

• cellulose

• starch

• chitin