Question 1

Which of the following correctly describes the process by which macromolecules are formed from their monomer subunits?

Accepted Answer

Macromolecules are formed by dehydration reactions, which remove water to create covalent bonds between monomers.

Question 2

Which type of bond is primarily responsible for the polymerization of amino acids into proteins?

Accepted Answer

Peptide bond

Question 3

A patient with diabetes has elevated blood glucose levels. Which macromolecule is directly involved in the storage of excess glucose in human cells?

Accepted Answer

Glycogen

Question 4

Which of the following best explains why phospholipids form bilayers in aqueous environments?

Accepted Answer

Phospholipids have hydrophilic heads and hydrophobic tails, causing the tails to avoid water and the heads to interact with water.

Question 5

Which of the following is a correct description of a dehydration reaction?

Accepted Answer

A reaction in which water is released as monomers are joined to form a polymer.

Question 6

Which of the following is NOT a function of noncovalent bonds in biological macromolecules?

Accepted Answer

Forming the primary structure of DNA.

Question 7

A triglyceride is formed from which combination of building blocks?

Accepted Answer

Three fatty acids and one glycerol molecule

Question 8

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

Accepted Answer

Unsaturated fats contain one or more double bonds, creating kinks that prevent tight packing.

Question 9

Which of the following is the correct formula for a dehydration reaction between two glucose molecules to form a disaccharide?

Accepted Answer

$C_6H_{12}O_6 + C_6H_{12}O_6 \rightarrow C_{12}H_{22}O_{11} + H_2O$

Question 10

Which of the following best describes the role of phosphodiester bonds in nucleic acids?

Accepted Answer

They join nucleotides together to form the backbone of DNA and RNA.

Question 11

A mutation changes the sequence of amino acids in a protein. Which level of protein structure is directly affected by this mutation?

Accepted Answer

Primary structure

Question 12

Which of the following is a real-world consequence of the amphipathic nature of phospholipids?

Accepted Answer

Phospholipids form micelles and bilayers, creating cell membranes.

Question 13

Which of the following is the correct chemical structure for a peptide bond formed between two amino acids?

Accepted Answer

$-COOH + -NH_2 \rightarrow -CO-NH- + H_2O$

Question 14

Which of the following is a function of cholesterol in animal cell membranes?

Accepted Answer

It acts as a structural component that modulates membrane fluidity.

Question 15

Which of the following best explains why trans fats are considered unhealthy?

Accepted Answer

Trans fats have straight chains similar to saturated fats, allowing them to pack tightly and raise cholesterol levels.

Question 16

Which of the following is a correct example of a noncovalent interaction stabilizing a macromolecular assembly?

Accepted Answer

Hydrogen bonds between complementary bases in DNA double helix

Question 17

Which of the following is the correct sequence of building blocks to macromolecules?

Accepted Answer

Amino Acids → Proteins

Question 18

Which of the following is a real-life application of understanding macromolecule structure in medicine?

Accepted Answer

Designing drugs that disrupt noncovalent interactions in viral proteins to inhibit infection

Question 19

Which of the following correctly matches a macromolecule with its primary biological function?

Accepted Answer

Proteins: Catalyze biochemical reactions

Macromolecules: Structure, Formation, and Function in Biology

Study Guide - Practice Questions