WGU C190 Intro to Biology | Western Governors
University | Academic Year 2026/2027 | Objective
Assessment Comprehensive Practice
Examination
Questions 1–100
Biology Foundations & Scientific Method
1. Which characteristic is shared by all living organisms?
A. Ability to move from one location to another
B. Ability to perform photosynthesis
C. Ability to maintain an organized internal environment
D. Presence of a nervous system
Correct Answer: C. Ability to maintain an organized internal environment
2. What is the smallest structural and functional unit capable of carrying
out all basic processes of life?
,A. Tissue
B. Organ
C. Atom
D. Cell
Correct Answer: D. Cell
3. A scientist proposes that increasing fertilizer concentration will increase
plant growth up to a certain point. This statement is best described as a:
A. Theory
B. Hypothesis
C. Conclusion
D. Scientific law
Correct Answer: B. Hypothesis
4. In an experiment testing whether temperature affects enzyme activity,
what is the independent variable?
A. Amount of product formed
B. Enzyme concentration
,C. Temperature
D. Reaction time
Correct Answer: C. Temperature
5. Which variable is deliberately changed by a researcher during an
experiment?
A. Dependent variable
B. Controlled variable
C. Experimental error
D. Independent variable
Correct Answer: D. Independent variable
6. Which statement best describes homeostasis?
A. Production of offspring
B. Movement toward a stimulus
C. Maintenance of relatively stable internal conditions
D. Development of new species
Correct Answer: C. Maintenance of relatively stable internal conditions
, 7. Which level of organization comes immediately after the cellular level?
A. Organ system
B. Organ
C. Tissue
D. Organism
Correct Answer: C. Tissue
8. A group of organisms belonging to the same species and living in the
same geographic area is called a:
A. Community
B. Ecosystem
C. Biosphere
D. Population
Correct Answer: D. Population
9. Which statement best distinguishes a scientific theory from an everyday
guess?
University | Academic Year 2026/2027 | Objective
Assessment Comprehensive Practice
Examination
Questions 1–100
Biology Foundations & Scientific Method
1. Which characteristic is shared by all living organisms?
A. Ability to move from one location to another
B. Ability to perform photosynthesis
C. Ability to maintain an organized internal environment
D. Presence of a nervous system
Correct Answer: C. Ability to maintain an organized internal environment
2. What is the smallest structural and functional unit capable of carrying
out all basic processes of life?
,A. Tissue
B. Organ
C. Atom
D. Cell
Correct Answer: D. Cell
3. A scientist proposes that increasing fertilizer concentration will increase
plant growth up to a certain point. This statement is best described as a:
A. Theory
B. Hypothesis
C. Conclusion
D. Scientific law
Correct Answer: B. Hypothesis
4. In an experiment testing whether temperature affects enzyme activity,
what is the independent variable?
A. Amount of product formed
B. Enzyme concentration
,C. Temperature
D. Reaction time
Correct Answer: C. Temperature
5. Which variable is deliberately changed by a researcher during an
experiment?
A. Dependent variable
B. Controlled variable
C. Experimental error
D. Independent variable
Correct Answer: D. Independent variable
6. Which statement best describes homeostasis?
A. Production of offspring
B. Movement toward a stimulus
C. Maintenance of relatively stable internal conditions
D. Development of new species
Correct Answer: C. Maintenance of relatively stable internal conditions
, 7. Which level of organization comes immediately after the cellular level?
A. Organ system
B. Organ
C. Tissue
D. Organism
Correct Answer: C. Tissue
8. A group of organisms belonging to the same species and living in the
same geographic area is called a:
A. Community
B. Ecosystem
C. Biosphere
D. Population
Correct Answer: D. Population
9. Which statement best distinguishes a scientific theory from an everyday
guess?
