Dehydration and Hydrolysis Practice Questions

Which of the following is a molecule of glucose?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-3

What is the chemical formula for this polysaccharide?

• A. C₆H₁₂O₆

• B. C₁₈H₃₆O₁₈

• C. 3C₆H₁₂O₆

• D. C₁₈H₃₂O₁₆

Tags

NGSS.HS-LS1-6

Which of the following refers to the process of hydrolysis?

• A. In hydrolysis, a molecule of water is released when two molecules are joined together.

• B. The end result of hydrolysis is a chain of molecules such as a polysaccharide.

• C. Water is needed for hydrolysis to take place.

• D. Hydrolysis is the process in which plants and animals create complex molecules such as carbohydrates and proteins.

What will be the end product(s) of the following dehydration synthesis reaction?

C₆H₁₂O₆ + C₆H₁₂O₆ + C₆H₁₂O₆ + C₆H₁₂O₆ →?

• A. C₂₄H₄₆O₂₃ + H₂O

• B. C₂₄H₄₄O₂₂ + 2H₂O

• C. C₂₄H₄₂O₂₁ + 3H₂O

• D. C₂₄H₄₀O₂₀ + 4H₂O

Tags

NGSS.HS-LS1-6

Which formula represents a polysaccharide that consists of five monosaccharides joined together by dehydration synthesis?

• A. C₆H₁₂O₆

• B. C₃₀H₆₀O₃₀

• C. 5C₆H₁₂O₆

• D. C₃₀H₅₂O₂₆

Which of the following is an accurate description of the process shown in Figure 1 ?

• A. The linking of amino acids with an ionic bond as an initial step in the protein synthesis process

• B. The formation of a more complex carbohydrate with the covalent bonding of two simple sugars

• C. The hydrolysis of amino acids with the breaking of covalent bonds with the release of water

• D. The formation of a covalent peptide bond in a dehydration synthesis reaction

Which of the following best describes the formation of the bond shown in Figure 1 ?

• A. An ionic bond is formed between a carbon atom of one amino acid and the nitrogen atom of the other amino acid.

• B. An ionic bond is formed when the negative charge of an OH

  group is balanced by the positive charge of a hydrogen ion.

• C. A covalent bond is formed between a carbon atom and a nitrogen atom along with the formation of H₂O.

• A covalent bond is formed that replaces the hydrogen bond between the OH group and the H atom.

Tags

NGSS.HS-PS1-2

In a dehydration synthesis reaction between two un-ionized monomers, such as monosaccharide (aka.______________), the hydrogen of one monomer combines with the hydroxyl group of another monomer, releasing a molecule of ______________in the process. This helps to form covalent bond.

Polymers are broken down into _______________ in a process known as hydrolysis, which means “to split water,” a reaction in which a water molecule is used during the breakdown.