$C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O + \text{energy}$

Question 1

Which of the following best describes a polymerization reaction in biological systems?

Accepted Answer

A reaction in which monomers are linked together by the removal of a water molecule.

Question 2

Which of the following molecules is NOT a carbohydrate?

Accepted Answer

Triglyceride

Question 3

What is the general chemical formula for a monosaccharide?

Accepted Answer

$C_nH_{2n}O_n$

Question 4

Which process is responsible for breaking down polysaccharides into monosaccharides in the digestive system?

Accepted Answer

Hydrolysis

Question 5

Which of the following is a storage polysaccharide found in animals?

Accepted Answer

Glycogen

Question 6

A plant cell wall is primarily composed of which polysaccharide?

Accepted Answer

Cellulose

Question 7

Which of the following statements about saturated and unsaturated fatty acids is TRUE?

Accepted Answer

Saturated fatty acids have no double bonds and are typically solid at room temperature.

Question 8

Which of the following is a correct example of a condensation reaction?

Accepted Answer

Formation of a peptide bond between two amino acids with the release of $H_2O$

Question 9

Which linkage is found in the structure of cellulose?

Accepted Answer

$\beta$-1,4-glycosidic linkage

Question 10

Which of the following best explains why humans cannot digest cellulose?

Accepted Answer

Humans lack the enzyme to break $\beta$-1,4-glycosidic bonds.

Question 11

A triglyceride is formed by the reaction of:

Accepted Answer

Three fatty acids and one glycerol molecule

Question 12

Which of the following is a function of carbohydrates in living organisms?

Accepted Answer

Long-term energy storage in the form of glycogen or starch

Question 13

Which molecule is the primary metabolic fuel for most cells?

Accepted Answer

Glucose

Question 14

Which of the following is TRUE about the structure of starch?

Accepted Answer

It is composed of $\alpha$-1,4-glycosidic linkages between glucose monomers.

Question 15

Which of the following is a correct chemical equation for cellular respiration?

Accepted Answer

$C_6H_{12}O_6 + 6O_2 ightarrow 6CO_2 + 6H_2O + 	ext{energy}$

Question 16

Which of the following is a correct description of a hydrocarbon?

Accepted Answer

A molecule consisting entirely of carbon and hydrogen atoms.

Question 17

Which of the following is a real-world example of a polysaccharide used for energy storage in plants?

Accepted Answer

Starch stored in potato tubers

Question 18

Which of the following best explains the difference between amylose and amylopectin?

Accepted Answer

Amylose is a linear polymer of glucose, while amylopectin is branched.

Question 19

Which of the following fatty acids is most likely to be solid at room temperature?

Accepted Answer

Palmitic acid

Question 20

Which of the following is a correct statement about the role of cellulose in plants?

Accepted Answer

Cellulose provides structural support in the cell wall.

Biological Macromolecules: Structure, Function, and Classification

Study Guide - Practice Questions