Question 1

Which of the following best describes the difference between a polymer and a monomer?

Accepted Answer

A monomer is a building block that can join with others to form a polymer.

Question 2

Which type of bond is primarily responsible for holding together the secondary structure of proteins?

Accepted Answer

Hydrogen bonds

Question 3

What determines whether a polysaccharide is branched or linear?

Accepted Answer

The type of glycosidic linkage between monosaccharides

Question 4

Which of the following is NOT a function of nucleic acids?

Accepted Answer

Forming cell membranes

Question 5

Which process joins monomers together to form polymers, releasing water as a byproduct?

Accepted Answer

Condensation (dehydration) reaction

Question 6

Which of the following best describes the difference between saturated and unsaturated fatty acids?

Accepted Answer

Saturated fatty acids have only single bonds between carbons, while unsaturated fatty acids have one or more double bonds.

Question 7

Which of the following is a correct pairing of a macromolecule and its monomer?

Accepted Answer

Nucleic acid – Nucleotide

Question 8

What is the main function of phospholipids in cells?

Accepted Answer

Forming the structural basis of cell membranes

Question 9

Which of the following statements about hydrolysis is correct?

Accepted Answer

Hydrolysis breaks polymers into monomers by adding water.

Question 10

Which of the following best explains why proteins can have such diverse functions in cells?

Accepted Answer

Proteins can fold into complex three-dimensional shapes due to interactions among their amino acid side chains.

Question 11

Which of the following is a correct description of the 5' and 3' ends of a nucleic acid strand?

Accepted Answer

The 5' end has a free phosphate group, and the 3' end has a free hydroxyl group.

Question 12

Which of the following bonds is responsible for the primary structure of a protein?

Accepted Answer

Peptide bonds

Question 13

Which of the following scenarios would most likely disrupt the tertiary structure of a protein?

Accepted Answer

Disrupting hydrophobic interactions and disulfide bridges

Question 14

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

Accepted Answer

Providing structural support and energy storage

Question 15

Which of the following best describes complementary base pairing in DNA?

Accepted Answer

Adenine pairs with thymine, and cytosine pairs with guanine.

Question 16

Which of the following is a characteristic of amphipathic molecules?

Accepted Answer

They have both hydrophobic and hydrophilic regions.

Question 17

Which of the following best explains why denaturation affects protein function?

Accepted Answer

Denaturation disrupts the three-dimensional shape required for protein activity.

Question 18

Which of the following is true about the directionality of nucleic acid synthesis?

Accepted Answer

Nucleic acids are synthesized in the 5' to 3' direction.

Question 19

Which of the following best describes the role of disulfide bridges in proteins?

Accepted Answer

They stabilize the tertiary and quaternary structures of proteins.

Question 20

Which of the following is a real-life example of hydrolysis?

Accepted Answer

Digesting starch into glucose molecules in the human intestine

Lecture 3 Study Guide: Biological Macromolecules and Their Properties

Study Guide - Practice Questions