P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
BIOD 171 Essential Microbiology
Module 1-6 Exams (Portage
Learning)
190+
Verified Answers Exam Ready With Rationales
192 QUESTIONS
DOCUMENT OVERVIEW
This 2026/27 examination package spans 6 modules — BIOD 171 MODULE 1 , BIOD
171 MODULE 2 , BIOD 171 MODULE 3 , BIOD 171 MODULE 4 , BIOD 171 MODULE 5 ,
and BIOD 171 MODULE 6 — totaling 192 verified questions . Coverage is weighted
toward BIOD 171 MODULE 4 (38 questions), with BIOD 171 MODULE 1 as the smallest
section (16 questions). Every item ships with detailed rationales explaining the
underlying principle, verified correct answers, and supporting visuals. Best used as a
structured review across these sections, or as targeted remediation on any single
module. See the Table of Contents below for the full module breakdown and question
ranges.
CONTENTS
01 • BIOD 171 MODULE 1 02 • BIOD 171 MODULE 2
Page 1
, 03 • BIOD 171 MODULE 3 04 • BIOD 171 MODULE 4
05 • BIOD 171 MODULE 5 06 • BIOD 171 MODULE 6
MODULE 1 OF 6
BIOD 171 MODULE 1
16 Questions Q1–Q16
Q1 QUESTION 1 OF 192 BIOD 171 MODULE 1
Microbiology is the study of what?
CORRECT ANSWER
My answer: Microbiology is the study of microorganisms and their biological
processes at what is called the "micro" or "microscopic" level.
Answer Key: Microbiology is the study of microbes (microorganisms and viruses) and
their biological processes.
RATIONALE
Microbiology encompasses the investigation of microorganisms, including bacteria, fungi,
protozoa, and viruses, focusing on their structure, function, and interactions within
ecosystems. Understanding these microscopic entities is fundamental to fields such as
medicine, environmental science, and biotechnology.
Page 2
, Q2 QUESTION 2 OF 192 BIOD 171 MODULE 1
What is the smallest biological unit of life?
CORRECT ANSWER
the cell
RATIONALE
Cells are the fundamental structural and functional units of all living organisms, capable of
carrying out life processes such as metabolism, growth, and reproduction. This principle of
cellular organization is foundational to biology, emphasizing that all life is composed of one
or more cells.
Q3 QUESTION 3 OF 192 BIOD 171 MODULE 1
What is a macromolecule?
CORRECT ANSWER
My answer: Macromolecules are large and complicated molecules that are made up
of smaller molecules. Examples of macromolecules are polysaccharides, lipids,
nucleic acids, and proteins.
More info:
- Proteins are made up of amino acids (of which there are 20 different types).
- Nucleic Acids can be either DNA or RNA. Nucleic acids are made up of nucleotides.
For DNA, the nucleotides are adenine (A), guanine (G), cytosine (C) and thymine (T).
For RNA, the nucleotides are adenine (A), guanine (G), cytosine (C) and uracil (U).
- Lipids are made up of hydrocarbons.
- Polysaccharides are made up of monosaccharides.
Answer Key: A macromolecule is classified as a complex molecule that is composed
from smaller subunits.
RATIONALE
Macromolecules are characterized by their large size and complex structures, resulting from
the polymerization of smaller subunits such as amino acids in proteins or nucleotides in
nucleic acids. This concept highlights the relationship between structure and function in
biological systems, emphasizing how the arrangement of smaller units leads to diverse
macromolecular functions.
Page 3
, Q4 QUESTION 4 OF 192 BIOD 171 MODULE 1
What are the four main types of macromolecules?
CORRECT ANSWER
My answer: polysaccharides, lipids, nucleic acids, proteins
Answer Key: Proteins, nucleic acids, lipids and polysaccharides
RATIONALE
Macromolecules are essential biological molecules classified into four main types based on
their structure and function: proteins serve as enzymes and structural components, nucleic
acids store and transmit genetic information, lipids provide energy storage and membrane
structure, and polysaccharides function in energy storage and cellular structure.
Understanding these categories is to grasping biochemical processes and molecular
biology.
Q5 QUESTION 5 OF 192 BIOD 171 MODULE 1
What various functions do proteins have in a cell?
CORRECT ANSWER
My Answer:
Proteins have several functions in the cell;
1. To assist materials in moving in and out of the cell
2. To act as a catalyst enzyme which speeds up a biochemical process
3. To provide structure in the cell
4. To enable movement (e.g. filaments)
Answer Key: Proteins may facilitate the movement of materials in or out of a cell.
Some can act as enzymes that catalyze, or speed up, biochemical processes. Others
play a structural role while other proteins, such as filaments, enable movement.
RATIONALE
Proteins perform diverse cellular functions, including transport across membranes,
enzymatic catalysis to accelerate metabolic reactions, structural support to maintain cell
integrity, and facilitating movement through cytoskeletal components. This highlights the
multifunctional nature of proteins, integral to cellular homeostasis and activity.
Page 4
BIOD 171 Essential Microbiology
Module 1-6 Exams (Portage
Learning)
190+
Verified Answers Exam Ready With Rationales
192 QUESTIONS
DOCUMENT OVERVIEW
This 2026/27 examination package spans 6 modules — BIOD 171 MODULE 1 , BIOD
171 MODULE 2 , BIOD 171 MODULE 3 , BIOD 171 MODULE 4 , BIOD 171 MODULE 5 ,
and BIOD 171 MODULE 6 — totaling 192 verified questions . Coverage is weighted
toward BIOD 171 MODULE 4 (38 questions), with BIOD 171 MODULE 1 as the smallest
section (16 questions). Every item ships with detailed rationales explaining the
underlying principle, verified correct answers, and supporting visuals. Best used as a
structured review across these sections, or as targeted remediation on any single
module. See the Table of Contents below for the full module breakdown and question
ranges.
CONTENTS
01 • BIOD 171 MODULE 1 02 • BIOD 171 MODULE 2
Page 1
, 03 • BIOD 171 MODULE 3 04 • BIOD 171 MODULE 4
05 • BIOD 171 MODULE 5 06 • BIOD 171 MODULE 6
MODULE 1 OF 6
BIOD 171 MODULE 1
16 Questions Q1–Q16
Q1 QUESTION 1 OF 192 BIOD 171 MODULE 1
Microbiology is the study of what?
CORRECT ANSWER
My answer: Microbiology is the study of microorganisms and their biological
processes at what is called the "micro" or "microscopic" level.
Answer Key: Microbiology is the study of microbes (microorganisms and viruses) and
their biological processes.
RATIONALE
Microbiology encompasses the investigation of microorganisms, including bacteria, fungi,
protozoa, and viruses, focusing on their structure, function, and interactions within
ecosystems. Understanding these microscopic entities is fundamental to fields such as
medicine, environmental science, and biotechnology.
Page 2
, Q2 QUESTION 2 OF 192 BIOD 171 MODULE 1
What is the smallest biological unit of life?
CORRECT ANSWER
the cell
RATIONALE
Cells are the fundamental structural and functional units of all living organisms, capable of
carrying out life processes such as metabolism, growth, and reproduction. This principle of
cellular organization is foundational to biology, emphasizing that all life is composed of one
or more cells.
Q3 QUESTION 3 OF 192 BIOD 171 MODULE 1
What is a macromolecule?
CORRECT ANSWER
My answer: Macromolecules are large and complicated molecules that are made up
of smaller molecules. Examples of macromolecules are polysaccharides, lipids,
nucleic acids, and proteins.
More info:
- Proteins are made up of amino acids (of which there are 20 different types).
- Nucleic Acids can be either DNA or RNA. Nucleic acids are made up of nucleotides.
For DNA, the nucleotides are adenine (A), guanine (G), cytosine (C) and thymine (T).
For RNA, the nucleotides are adenine (A), guanine (G), cytosine (C) and uracil (U).
- Lipids are made up of hydrocarbons.
- Polysaccharides are made up of monosaccharides.
Answer Key: A macromolecule is classified as a complex molecule that is composed
from smaller subunits.
RATIONALE
Macromolecules are characterized by their large size and complex structures, resulting from
the polymerization of smaller subunits such as amino acids in proteins or nucleotides in
nucleic acids. This concept highlights the relationship between structure and function in
biological systems, emphasizing how the arrangement of smaller units leads to diverse
macromolecular functions.
Page 3
, Q4 QUESTION 4 OF 192 BIOD 171 MODULE 1
What are the four main types of macromolecules?
CORRECT ANSWER
My answer: polysaccharides, lipids, nucleic acids, proteins
Answer Key: Proteins, nucleic acids, lipids and polysaccharides
RATIONALE
Macromolecules are essential biological molecules classified into four main types based on
their structure and function: proteins serve as enzymes and structural components, nucleic
acids store and transmit genetic information, lipids provide energy storage and membrane
structure, and polysaccharides function in energy storage and cellular structure.
Understanding these categories is to grasping biochemical processes and molecular
biology.
Q5 QUESTION 5 OF 192 BIOD 171 MODULE 1
What various functions do proteins have in a cell?
CORRECT ANSWER
My Answer:
Proteins have several functions in the cell;
1. To assist materials in moving in and out of the cell
2. To act as a catalyst enzyme which speeds up a biochemical process
3. To provide structure in the cell
4. To enable movement (e.g. filaments)
Answer Key: Proteins may facilitate the movement of materials in or out of a cell.
Some can act as enzymes that catalyze, or speed up, biochemical processes. Others
play a structural role while other proteins, such as filaments, enable movement.
RATIONALE
Proteins perform diverse cellular functions, including transport across membranes,
enzymatic catalysis to accelerate metabolic reactions, structural support to maintain cell
integrity, and facilitating movement through cytoskeletal components. This highlights the
multifunctional nature of proteins, integral to cellular homeostasis and activity.
Page 4
