c03a02 Organic Macromolecules

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1. Monomers are linked into polymers by 1. _____, which involve the 2. _____ of a water molecule. Polymers are broken down to monomers by 3. _____, which involves the 4. _____ of a water molecule. *

4 points

addition

hydrolysis

dehydration reactions

removal

2. Which of the following best describes the formation of the bond shown in the figure below? *

1 point

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

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

An ionic bond is formed when the negative charge of an OH group is balanced by the positive charge of a hydrogen ion.

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

3. If the tripeptide below were to be digested, how would it be reduced to amino acids? *

1 point

through the removal of functional groups at either end

by reduction in digestive fluid pH in the stomach

through a hydrolysis reaction in which water is added

by a dehydration reaction which removes water

4. Hydrolysis is involved in which of the following? *

1 point

hydrogen bond formation between nucleic acids to make DNA

the hydrophilic interactions of lipids

formation of starch

the digestion of sucrose to glucose and fructose

peptide bond formation between amino acids in proteins

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