BIOD 171 Comprehensive Final Exam
Review – Modules 1–8/BIOD 171
Comprehensive Final Exam 2026 | Portage
Learning | Modules 1–8 High-Yield Verified
Q&As & Review
This comprehensive review synthesizes high-yield concepts from the entire
BIOD 171 Essential Microbiology curriculum. The final exam evaluates
mastery of microbial genetics, metabolism, microscopy, clinical
pathogenesis, and immunology. Students are tested on their ability to
identify specific bacterial, viral, and fungal diseases, understand the human
immune response, and apply principles of epidemiology to real-world
healthcare scenarios.
Module 1: Cell Biology & Macromolecules
Question 1
What is the smallest biological unit of life?
A) Atom
B) Molecule
C) Cell
D) Organism
Answer: C
,Rationale: The cell represents the fundamental structural and functional
unit of life, capable of autonomous processes necessary for living systems.
Question 2
At a generalized level, all cells are comprised of what?
A) Organelles
B) Macromolecules
C) Tissues
D) Organisms
Answer: B
Rationale: All cells are comprised of macromolecules: Proteins, Lipids,
Nucleic Acids, and Polysaccharides.
Question 3
What are the four main types of macromolecules found in cells?
A) Proteins, Lipids, Nucleic acids, Polysaccharides
B) Carbohydrates, Fats, DNA, RNA
C) Amino acids, Sugars, Nucleotides, Fatty acids
D) Enzymes, Hormones, Antibodies, Receptors
Answer: A
Rationale: These four classes represent fundamental biomolecules serving
structural, informational, and energy storage functions vital for cellular life.
Question 4
Proteins are formed from various combinations of ______, of which there
are ______ known forms.
,A) Nucleotides; 4
B) Amino acids; 20
C) Fatty acids; 10
D) Monosaccharides; 6
Answer: B
Rationale: Proteins are polymers of 20 standard amino acids, each with
distinct side chains affecting folding and function.
Question 5
How many amino acids are classified as being essential amino acids?
A) 5
B) 7
C) 9
D) 12
Answer: C
Rationale: There are nine amino acids considered essential for adults,
necessary from dietary sources for protein synthesis.
Question 6
What are the two major types of nucleic acids and their roles?
A) DNA and RNA—DNA stores hereditary information; RNA deciphers DNA
to synthesize proteins
B) DNA and mRNA—both store genetic information
C) RNA and tRNA—both synthesize proteins
D) DNA and ATP—DNA stores energy; ATP stores information
Answer: A
, Rationale: DNA contains vast hereditary information and is responsible for
inheritable characteristics. RNA is responsible for deciphering hereditary
information in DNA and using it to synthesize proteins.
Question 7
Complete the following DNA strand and indicate how many bonds are
formed for each complementary pair:
3' GGUCAUCG 5'
5' CC_____AGC 3'
A) 5' CCAGUAGC 3'; A-T pairs form 2 bonds; G-C pairs form 3 bonds
B) 5' CCAGUAGC 3'; A-U pairs form 2 bonds; G-C pairs form 3 bonds
C) 5' CCAGTAGC 3'; A-T pairs form 3 bonds; G-C pairs form 2 bonds
D) 5' CCAGUAGC 3'; A-U pairs form 3 bonds; G-C pairs form 2 bonds
Answer: B
Rationale: Complementary base pairing: A pairs with U (RNA) via 2
hydrogen bonds; G pairs with C via 3 hydrogen bonds.
Question 8
The plasma membrane (select all that are true):
A) Restricts movement of materials in and out of the cell
B) Is often a triple layer comprised of lipids
C) Prevents essential nutrients from escaping
D) Contains hydrophobic tails pointing outward
Answer: A, C
Rationale: The plasma membrane acts as a selective barrier regulating
import and export. Hydrophobic tails face inward (D is false). The
membrane is a bilayer, not a triple layer (B is false).
Review – Modules 1–8/BIOD 171
Comprehensive Final Exam 2026 | Portage
Learning | Modules 1–8 High-Yield Verified
Q&As & Review
This comprehensive review synthesizes high-yield concepts from the entire
BIOD 171 Essential Microbiology curriculum. The final exam evaluates
mastery of microbial genetics, metabolism, microscopy, clinical
pathogenesis, and immunology. Students are tested on their ability to
identify specific bacterial, viral, and fungal diseases, understand the human
immune response, and apply principles of epidemiology to real-world
healthcare scenarios.
Module 1: Cell Biology & Macromolecules
Question 1
What is the smallest biological unit of life?
A) Atom
B) Molecule
C) Cell
D) Organism
Answer: C
,Rationale: The cell represents the fundamental structural and functional
unit of life, capable of autonomous processes necessary for living systems.
Question 2
At a generalized level, all cells are comprised of what?
A) Organelles
B) Macromolecules
C) Tissues
D) Organisms
Answer: B
Rationale: All cells are comprised of macromolecules: Proteins, Lipids,
Nucleic Acids, and Polysaccharides.
Question 3
What are the four main types of macromolecules found in cells?
A) Proteins, Lipids, Nucleic acids, Polysaccharides
B) Carbohydrates, Fats, DNA, RNA
C) Amino acids, Sugars, Nucleotides, Fatty acids
D) Enzymes, Hormones, Antibodies, Receptors
Answer: A
Rationale: These four classes represent fundamental biomolecules serving
structural, informational, and energy storage functions vital for cellular life.
Question 4
Proteins are formed from various combinations of ______, of which there
are ______ known forms.
,A) Nucleotides; 4
B) Amino acids; 20
C) Fatty acids; 10
D) Monosaccharides; 6
Answer: B
Rationale: Proteins are polymers of 20 standard amino acids, each with
distinct side chains affecting folding and function.
Question 5
How many amino acids are classified as being essential amino acids?
A) 5
B) 7
C) 9
D) 12
Answer: C
Rationale: There are nine amino acids considered essential for adults,
necessary from dietary sources for protein synthesis.
Question 6
What are the two major types of nucleic acids and their roles?
A) DNA and RNA—DNA stores hereditary information; RNA deciphers DNA
to synthesize proteins
B) DNA and mRNA—both store genetic information
C) RNA and tRNA—both synthesize proteins
D) DNA and ATP—DNA stores energy; ATP stores information
Answer: A
, Rationale: DNA contains vast hereditary information and is responsible for
inheritable characteristics. RNA is responsible for deciphering hereditary
information in DNA and using it to synthesize proteins.
Question 7
Complete the following DNA strand and indicate how many bonds are
formed for each complementary pair:
3' GGUCAUCG 5'
5' CC_____AGC 3'
A) 5' CCAGUAGC 3'; A-T pairs form 2 bonds; G-C pairs form 3 bonds
B) 5' CCAGUAGC 3'; A-U pairs form 2 bonds; G-C pairs form 3 bonds
C) 5' CCAGTAGC 3'; A-T pairs form 3 bonds; G-C pairs form 2 bonds
D) 5' CCAGUAGC 3'; A-U pairs form 3 bonds; G-C pairs form 2 bonds
Answer: B
Rationale: Complementary base pairing: A pairs with U (RNA) via 2
hydrogen bonds; G pairs with C via 3 hydrogen bonds.
Question 8
The plasma membrane (select all that are true):
A) Restricts movement of materials in and out of the cell
B) Is often a triple layer comprised of lipids
C) Prevents essential nutrients from escaping
D) Contains hydrophobic tails pointing outward
Answer: A, C
Rationale: The plasma membrane acts as a selective barrier regulating
import and export. Hydrophobic tails face inward (D is false). The
membrane is a bilayer, not a triple layer (B is false).
