Portage Learning / Geneva
LANIF · 171 DOIB
GENEVA
College
COLLEGE
G
Department of Natural Sciences
EST. 1848
P R O C H R I S T O E T P AT R I A
BIOD 171 FINAL EXAM STUDY
E SS E N T I A L L A B M I C R O B I O LO G Y — CO M P R E H E N S I V E ST U DY G U I D E
INSTITUTION Portage Learning / Geneva College COURSE CODE BIOD 171
PROGRAM Pre-Nursing / Health Sciences ACADEMIC YEAR
EXAM TITLE BIOD 171 FINAL EXAM STUDY TOTAL QUESTIONS 73 Questions
COURSE TITLE Essential Lab Microbiology FORMAT Multiple Choice — Select the
Single Best Answer
EXAMINATION INSTRUCTIONS
▸ Select the single best answer for each question.
▸ Content covers microbiology fundamentals, cellular biology, metabolism, microscopy, staining,
bacterial culture, pathogenic microbes, and virology.
▸ Correct answers and detailed rationales appear below each question.
▸ All content reflects BIOD 171 Essential Lab Microbiology curriculum standards.
, SECTION I — BIOD 171: ESSENTIAL LAB MICROBIOLOGY
Questions 1 – 73
FINAL EXAM STUDY
1. Microbiology is the study of what?
A. Only bacteria and their metabolic processes
B. Microbes (microorganisms and viruses) and their biological processes
C. Only viruses and their replication cycles
D. Macroscopic organisms and their ecosystems
CORRECT ANSWER B — Microbes (microorganisms and viruses) and their biological processes
RATIONALE Microbiology encompasses the study of all microscopic organisms (bacteria,
archaea, fungi, protists) and viruses, including their structure, function,
metabolism, genetics, and interactions with hosts and the environment. Viruses
are included despite being non-living because they are studied using
microbiological techniques and require host cells for replication.
2. What is the smallest biological unit of life?
A. Atom
B. Macromolecule
C. Cell
D. Organelle
CORRECT ANSWER C — Cell
RATIONALE The cell is the smallest unit that meets all criteria for life: it maintains
homeostasis, metabolizes, grows, responds to stimuli, and reproduces. Atoms
and macromolecules are components of cells but are not independently alive.
Organelles are subcellular structures that perform specific functions but cannot
survive independently. The cell theory states that all living things are composed
of cells.
,3. What is a macromolecule?
A. A single atom that functions independently
B. A complex molecule composed from smaller subunits
C. A simple molecule with no subunits
D. An organelle within the cell
CORRECT ANSWER B — A complex molecule composed from smaller subunits
RATIONALE Macromolecules are large, complex molecules built from smaller repeating
subunits (monomers). The four main types are proteins (amino acids), nucleic
acids (nucleotides), lipids (fatty acids/glycerol), and carbohydrates
(monosaccharides). These large molecules are essential for cellular structure and
function.
4. What are the four main types of macromolecules?
A. Proteins, nucleic acids, lipids, and carbohydrates
B. Cells, tissues, organs, and systems
C. Vitamins, minerals, water, and fiber
D. Enzymes, hormones, antibodies, and neurotransmitters
CORRECT ANSWER A — Proteins, nucleic acids, lipids, and carbohydrates
RATIONALE The four major classes of biological macromolecules are proteins (polymers of
amino acids), nucleic acids (DNA and RNA — nucleotide polymers), lipids
(hydrophobic molecules including fats, phospholipids, steroids), and
carbohydrates (sugars and polysaccharides). Option B lists levels of biological
organization. Option C lists dietary components. Option D lists specific protein
types.
, 5. What various functions do proteins have in a cell?
A. Only enzymatic catalysis of biochemical reactions
B. Facilitate movement of materials, act as enzymes, play structural roles, and enable
movement
C. Only structural support for the cell membrane
D. Only transport of molecules across membranes
CORRECT ANSWER B — Facilitate movement of materials, act as enzymes, play structural roles,
and enable movement
RATIONALE Proteins are the most functionally diverse macromolecules. They transport
materials across membranes (channel/carrier proteins), catalyze reactions
(enzymes), provide structure (collagen, keratin, cytoskeleton), and enable
movement (actin/myosin, flagella). They also function in signaling, defense, and
regulation. Options A, C, and D each describe only one function.
6. What are the two major types of nucleic acids and their roles?
A. DNA — stores hereditary information; RNA — deciphers DNA information to synthesize
proteins
B. DNA — synthesizes proteins; RNA — stores hereditary information
C. Both store genetic information equally
D. DNA — energy production; RNA — waste disposal
CORRECT ANSWER A — DNA contains hereditary information; RNA deciphers hereditary
information to synthesize proteins
RATIONALE DNA is the permanent storage molecule for genetic information, containing the
blueprint for all cellular proteins and inheritable characteristics. RNA serves as the
intermediate: mRNA transcribes DNA, tRNA and rRNA translate the code into
proteins. DNA does not directly synthesize proteins (B). RNA is not the primary
hereditary molecule in most organisms (C).
LANIF · 171 DOIB
GENEVA
College
COLLEGE
G
Department of Natural Sciences
EST. 1848
P R O C H R I S T O E T P AT R I A
BIOD 171 FINAL EXAM STUDY
E SS E N T I A L L A B M I C R O B I O LO G Y — CO M P R E H E N S I V E ST U DY G U I D E
INSTITUTION Portage Learning / Geneva College COURSE CODE BIOD 171
PROGRAM Pre-Nursing / Health Sciences ACADEMIC YEAR
EXAM TITLE BIOD 171 FINAL EXAM STUDY TOTAL QUESTIONS 73 Questions
COURSE TITLE Essential Lab Microbiology FORMAT Multiple Choice — Select the
Single Best Answer
EXAMINATION INSTRUCTIONS
▸ Select the single best answer for each question.
▸ Content covers microbiology fundamentals, cellular biology, metabolism, microscopy, staining,
bacterial culture, pathogenic microbes, and virology.
▸ Correct answers and detailed rationales appear below each question.
▸ All content reflects BIOD 171 Essential Lab Microbiology curriculum standards.
, SECTION I — BIOD 171: ESSENTIAL LAB MICROBIOLOGY
Questions 1 – 73
FINAL EXAM STUDY
1. Microbiology is the study of what?
A. Only bacteria and their metabolic processes
B. Microbes (microorganisms and viruses) and their biological processes
C. Only viruses and their replication cycles
D. Macroscopic organisms and their ecosystems
CORRECT ANSWER B — Microbes (microorganisms and viruses) and their biological processes
RATIONALE Microbiology encompasses the study of all microscopic organisms (bacteria,
archaea, fungi, protists) and viruses, including their structure, function,
metabolism, genetics, and interactions with hosts and the environment. Viruses
are included despite being non-living because they are studied using
microbiological techniques and require host cells for replication.
2. What is the smallest biological unit of life?
A. Atom
B. Macromolecule
C. Cell
D. Organelle
CORRECT ANSWER C — Cell
RATIONALE The cell is the smallest unit that meets all criteria for life: it maintains
homeostasis, metabolizes, grows, responds to stimuli, and reproduces. Atoms
and macromolecules are components of cells but are not independently alive.
Organelles are subcellular structures that perform specific functions but cannot
survive independently. The cell theory states that all living things are composed
of cells.
,3. What is a macromolecule?
A. A single atom that functions independently
B. A complex molecule composed from smaller subunits
C. A simple molecule with no subunits
D. An organelle within the cell
CORRECT ANSWER B — A complex molecule composed from smaller subunits
RATIONALE Macromolecules are large, complex molecules built from smaller repeating
subunits (monomers). The four main types are proteins (amino acids), nucleic
acids (nucleotides), lipids (fatty acids/glycerol), and carbohydrates
(monosaccharides). These large molecules are essential for cellular structure and
function.
4. What are the four main types of macromolecules?
A. Proteins, nucleic acids, lipids, and carbohydrates
B. Cells, tissues, organs, and systems
C. Vitamins, minerals, water, and fiber
D. Enzymes, hormones, antibodies, and neurotransmitters
CORRECT ANSWER A — Proteins, nucleic acids, lipids, and carbohydrates
RATIONALE The four major classes of biological macromolecules are proteins (polymers of
amino acids), nucleic acids (DNA and RNA — nucleotide polymers), lipids
(hydrophobic molecules including fats, phospholipids, steroids), and
carbohydrates (sugars and polysaccharides). Option B lists levels of biological
organization. Option C lists dietary components. Option D lists specific protein
types.
, 5. What various functions do proteins have in a cell?
A. Only enzymatic catalysis of biochemical reactions
B. Facilitate movement of materials, act as enzymes, play structural roles, and enable
movement
C. Only structural support for the cell membrane
D. Only transport of molecules across membranes
CORRECT ANSWER B — Facilitate movement of materials, act as enzymes, play structural roles,
and enable movement
RATIONALE Proteins are the most functionally diverse macromolecules. They transport
materials across membranes (channel/carrier proteins), catalyze reactions
(enzymes), provide structure (collagen, keratin, cytoskeleton), and enable
movement (actin/myosin, flagella). They also function in signaling, defense, and
regulation. Options A, C, and D each describe only one function.
6. What are the two major types of nucleic acids and their roles?
A. DNA — stores hereditary information; RNA — deciphers DNA information to synthesize
proteins
B. DNA — synthesizes proteins; RNA — stores hereditary information
C. Both store genetic information equally
D. DNA — energy production; RNA — waste disposal
CORRECT ANSWER A — DNA contains hereditary information; RNA deciphers hereditary
information to synthesize proteins
RATIONALE DNA is the permanent storage molecule for genetic information, containing the
blueprint for all cellular proteins and inheritable characteristics. RNA serves as the
intermediate: mRNA transcribes DNA, tRNA and rRNA translate the code into
proteins. DNA does not directly synthesize proteins (B). RNA is not the primary
hereditary molecule in most organisms (C).
