Question 1

Which of the following elements are most abundant in biological macromolecules, forming the backbone of organic molecules in cells?

Accepted Answer

Carbon, hydrogen, oxygen, and nitrogen

Question 2

Which process is responsible for linking monomers together to form polymers, and what is the byproduct of this reaction?

Accepted Answer

Dehydration reaction; water ($$H_2O) is $$produced

Question 3

Which of the following statements best describes the role of enzymes in the synthesis and breakdown of biological macromolecules?

Accepted Answer

Enzymes catalyze both dehydration and hydrolysis reactions, making them occur more efficiently

Question 4

Which of the following is NOT a polymer built from monomers in biological systems?

Accepted Answer

Fatty acids

Question 5

A dehydration reaction between two glucose molecules forms which type of carbohydrate, and what is the chemical equation for this process?

Accepted Answer

Disaccharide; $$C_6H_{12}O_6$ + C_6H_{12}O_6$ \rightarrow C$$_{12}$$H_{22}O$$_{11} + H_2O$

Question 6

Which statement correctly compares the function of carbohydrates that serve as energy storage versus those that provide structural support?

Accepted Answer

Energy storage carbohydrates (e.g., glycogen, starch) have branched structures, while structural carbohydrates (e.g., cellulose, chitin) have linear, rigid structures

Question 7

During hydrolysis of a polymer, which of the following occurs?

Accepted Answer

A water molecule is consumed to break a covalent bond between monomers

Question 8

Which of the following best describes the structure of a monosaccharide?

Accepted Answer

A single sugar molecule with the general formula $$C_nH_{2n}O_n$$

Question 9

Which of the following is a correct example of a polysaccharide and its biological function?

Accepted Answer

Cellulose; provides structural support in plant cell walls

Question 10

Which statement about the formation and breakdown of biological macromolecules is TRUE?

Accepted Answer

Dehydration reactions are endergonic and require enzymes to occur efficiently

Question 11

Which of the following best explains why matter is not created or destroyed during dehydration and hydrolysis reactions?

Accepted Answer

Atoms are simply rearranged to form new molecules

Question 12

Which of the following is a correct match between a monomer and the polymer it forms?

Accepted Answer

Nucleotide; nucleic acid

Question 13

Which of the following is a real-world example of a glycoprotein's function in human biology?

Accepted Answer

Determining blood type (e.g., O, A, B, AB) through sugar molecules attached to proteins on red blood cells

Question 14

Which equation represents the hydrolysis of maltose into its monomeric units?

Accepted Answer

$$C_{12}H$$_{22}$$O_{11} + H_2O \rightarrow 2C_6H_{12}O_6$

Question 15

Which of the following is a key difference between the structure of starch and cellulose?

Accepted Answer

Starch has $$	ext{α}-$$glycosidic linkages, while cellulose has $$	ext{β}-$$glycosidic linkages

Question 16

Which of the following best describes the role of sugars in cellular respiration?

Accepted Answer

Glucose is broken down to make ATP, providing energy for cellular processes

Question 17

Which of the following statements about hydrolysis reactions is correct?

Accepted Answer

Hydrolysis reactions are exergonic and require enzymes to occur efficiently

Question 18

Which of the following is a correct example of a covalent bond formed during polymerization?

Accepted Answer

Glycosidic bond between two monosaccharides

Question 19

Which statement best explains why fatty acids are not considered polymers?

Accepted Answer

Fatty acids are not made by linking monomers end-to-end via covalent bonds

Building Biological Molecules: Monomers, Polymers, and Carbohydrates

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