WGU C190 INTRO TO BIOLOGY FINAL EXAM
AND PRE ASSESSMENT EXAM: (LATEST
2026/2027 UPDATE) WITH
CORRECT/ACCURATE ANSWERS
Final Exam & Pre-Assessment
WESTERN GOVERNORS UNIVERSITY (WGU)
WGU C190 INTRO TO BIOLOGY
Questions 1–200
1. What does abiotic mean?
A) Living organisms
B) Non-living components, which may exist within or be produced by living organisms
C) Made of cells
D) A type of macromolecule
Correct Answer: B
Rationale: Abiotic refers to non-living factors in an environment, such as water, air, minerals, or
temperature. These can exist independently or be part of living systems.
2. Which of the following defines biotic?
A) Non-living matter
B) Matter that was never alive
C) Living organisms or matter that was once alive
D) A type of molecule
Correct Answer: C
Rationale: Biotic components include all living organisms and materials derived from living organisms.
,3. What is the smallest unit of matter?
A) Molecule
B) Atom
C) Cell
D) Organelle
Correct Answer: B
Rationale: Atoms are the basic building blocks of matter and cannot be broken down by chemical means.
4. What is a molecule?
A) A single atom
B) A group of cells
C) A structure made of two or more atoms bonded together
D) A type of tissue
Correct Answer: C
Rationale: Molecules form when atoms bond chemically, such as H₂O or CO₂.
5. Which of the following is an example of a macromolecule?
A) Water
B) DNA
C) Oxygen
D) Sodium chloride
Correct Answer: B
Rationale: DNA is a biological macromolecule composed of many nucleotide subunits.
6. What is the fundamental unit of life?
A) Atom
B) Molecule
C) Cell
D) Organ
Correct Answer: C
Rationale: Cells are the smallest units capable of carrying out all life processes.
,7. What is an organelle?
A) A type of tissue
B) A specialized structure within a cell that performs a specific function
C) A single-celled organism
D) A group of organs
Correct Answer: B
Rationale: Organelles such as the nucleus and mitochondria carry out essential cellular functions.
8. Which of the following is a microorganism?
A) Human
B) Tree
C) Bacterium
D) Rock
Correct Answer: C
Rationale: Microorganisms are typically single-celled organisms not visible without magnification.
9. What is tissue?
A) A group of organs
B) A group of similar cells working together
C) A single cell
D) A type of molecule
Correct Answer: B
Rationale: Tissues consist of cells with similar structures and functions.
10. What is an organ?
A) A single cell
B) A group of tissues working together
C) A type of molecule
D) A group of organelles
Correct Answer: B
Rationale: Organs perform specific functions and are made of multiple tissue types.
, 11. What is an organ system?
A) A group of organs working together to perform a major function
B) A single tissue
C) A type of cell
D) A group of molecules
Correct Answer: A
Rationale: Examples include the digestive, respiratory, and circulatory systems.
12. What is an organism?
A) A group of populations
B) An individual living entity
C) A type of tissue
D) A group of cells
Correct Answer: B
Rationale: An organism is a single, independent living thing.
13. What is a population?
A) A group of different species
B) All individuals of the same species living in a specific area
C) A single organism
D) A type of ecosystem
Correct Answer: B
Rationale: A population includes only one species within a defined location.
14. What is a community?
A) Multiple populations of different species interacting in an area
B) A single organism
C) A type of tissue
D) A group of cells
Correct Answer: A
Rationale: Communities consist of all living populations within an ecosystem.
AND PRE ASSESSMENT EXAM: (LATEST
2026/2027 UPDATE) WITH
CORRECT/ACCURATE ANSWERS
Final Exam & Pre-Assessment
WESTERN GOVERNORS UNIVERSITY (WGU)
WGU C190 INTRO TO BIOLOGY
Questions 1–200
1. What does abiotic mean?
A) Living organisms
B) Non-living components, which may exist within or be produced by living organisms
C) Made of cells
D) A type of macromolecule
Correct Answer: B
Rationale: Abiotic refers to non-living factors in an environment, such as water, air, minerals, or
temperature. These can exist independently or be part of living systems.
2. Which of the following defines biotic?
A) Non-living matter
B) Matter that was never alive
C) Living organisms or matter that was once alive
D) A type of molecule
Correct Answer: C
Rationale: Biotic components include all living organisms and materials derived from living organisms.
,3. What is the smallest unit of matter?
A) Molecule
B) Atom
C) Cell
D) Organelle
Correct Answer: B
Rationale: Atoms are the basic building blocks of matter and cannot be broken down by chemical means.
4. What is a molecule?
A) A single atom
B) A group of cells
C) A structure made of two or more atoms bonded together
D) A type of tissue
Correct Answer: C
Rationale: Molecules form when atoms bond chemically, such as H₂O or CO₂.
5. Which of the following is an example of a macromolecule?
A) Water
B) DNA
C) Oxygen
D) Sodium chloride
Correct Answer: B
Rationale: DNA is a biological macromolecule composed of many nucleotide subunits.
6. What is the fundamental unit of life?
A) Atom
B) Molecule
C) Cell
D) Organ
Correct Answer: C
Rationale: Cells are the smallest units capable of carrying out all life processes.
,7. What is an organelle?
A) A type of tissue
B) A specialized structure within a cell that performs a specific function
C) A single-celled organism
D) A group of organs
Correct Answer: B
Rationale: Organelles such as the nucleus and mitochondria carry out essential cellular functions.
8. Which of the following is a microorganism?
A) Human
B) Tree
C) Bacterium
D) Rock
Correct Answer: C
Rationale: Microorganisms are typically single-celled organisms not visible without magnification.
9. What is tissue?
A) A group of organs
B) A group of similar cells working together
C) A single cell
D) A type of molecule
Correct Answer: B
Rationale: Tissues consist of cells with similar structures and functions.
10. What is an organ?
A) A single cell
B) A group of tissues working together
C) A type of molecule
D) A group of organelles
Correct Answer: B
Rationale: Organs perform specific functions and are made of multiple tissue types.
, 11. What is an organ system?
A) A group of organs working together to perform a major function
B) A single tissue
C) A type of cell
D) A group of molecules
Correct Answer: A
Rationale: Examples include the digestive, respiratory, and circulatory systems.
12. What is an organism?
A) A group of populations
B) An individual living entity
C) A type of tissue
D) A group of cells
Correct Answer: B
Rationale: An organism is a single, independent living thing.
13. What is a population?
A) A group of different species
B) All individuals of the same species living in a specific area
C) A single organism
D) A type of ecosystem
Correct Answer: B
Rationale: A population includes only one species within a defined location.
14. What is a community?
A) Multiple populations of different species interacting in an area
B) A single organism
C) A type of tissue
D) A group of cells
Correct Answer: A
Rationale: Communities consist of all living populations within an ecosystem.
