BIL 150 VAN DYKEN EXAM 1 VERIFIED EXAM SOLUTIONS -
COMPREHENSIVE QUESTIONS AND ANSWERS - CURRENT
VERSION (2026/2027)
University of Miami | General Biology
Q1. What are the seven properties shared by all living organisms?
ANSWER Order, reproduction, energy processing, response to the
environment, regulation (homeostasis), evolutionary adaptation, and growth and
development.
Q2. What does "order" mean as a property of life? ANSWER Living
organisms have highly organized, complex structures (e.g., cells, tissues,
organs).
Q3. What is homeostasis? ANSWER The ability of an organism to regulate
its internal environment to maintain stable conditions despite external changes.
Q4. What is evolutionary adaptation? ANSWER Inherited characteristics
that enhance an organism's ability to survive and reproduce in its environment.
Q5. What is the most inclusive level of biological organization? ANSWER
The biosphere.
Q6. List the levels of biological organization from smallest to largest.
ANSWER Atom → Molecule → Organelle → Cell → Tissue → Organ →
Organ system → Organism → Population → Community → Ecosystem →
Biosphere.
Q7. What is the basic unit of life? ANSWER The cell.
Q8. What is a population in biological terms? ANSWER All individuals of
the same species living in the same area.
Q9. What is a community? ANSWER All the different populations of species
living together in the same area.
Q10. What is an ecosystem? ANSWER A community of organisms plus the
nonliving (abiotic) environment.
Q11. What distinguishes a tissue from an organ? ANSWER A tissue is a
group of similar cells performing a specific function; an organ is made of
multiple tissue types working together.
,Q12. What does "energy processing" mean as a property of life? ANSWER
Organisms use energy from the environment (food, sunlight) to power their
activities.
Q13. What is reproduction as a property of life? ANSWER The ability of
organisms to produce offspring, either sexually or asexually.
Q14. What is "response to the environment"? ANSWER The ability of
organisms to react to stimuli in their surroundings.
Q15. What is growth and development as a property of life? ANSWER An
increase in size and complexity driven by genetic information.
Q16. What is an organelle? ANSWER A membrane-bound structure within a
cell that performs a specific function.
Q17. What level of organization is a single bacterium? ANSWER It is a
single-celled organism — it represents the cell level and organism level
simultaneously.
Q18. What is the biosphere? ANSWER The entire portion of Earth where
life exists, including land, water, and the atmosphere.
Q19. What is reductionism in biology? ANSWER The approach of
understanding complex systems by studying their simpler components.
Q20. What is emergent properties? ANSWER Properties that arise at higher
levels of organization that are not present in the parts alone.
Q21. Give an example of an emergent property. ANSWER Water's ability
to be liquid at room temperature emerges from its molecular structure; life itself
emerges from combinations of nonliving molecules.
Q22. What is systems biology? ANSWER An approach that attempts to
model the dynamic behavior of whole biological systems rather than just their
parts.
Q23. What does "negative feedback" mean in the context of regulation?
ANSWER A mechanism where the output of a system reduces or shuts off the
stimulus that produced it, helping maintain homeostasis.
Q24. Give a biological example of negative feedback. ANSWER When
blood glucose rises, insulin is released to lower it; when it drops, insulin release
is reduced.
, Q25. What is positive feedback? ANSWER A mechanism where the output
amplifies or intensifies the stimulus (e.g., uterine contractions during
childbirth).
Q26. What is natural selection? ANSWER The process by which individuals
with favorable heritable traits reproduce more successfully, leading to the
evolution of populations.
Q27. Who proposed the theory of natural selection? ANSWER Charles
Darwin (and Alfred Russel Wallace).
Q28. What is descent with modification? ANSWER Darwin's concept that
species evolve over time from common ancestors, with modifications
accumulating in lineages.
Q29. What is the most inclusive definition of evolution? ANSWER Descent
with modification — changes in heritable traits in populations over generations.
Q30. What unifying theme ties all of biology together? ANSWER
Evolution — "Nothing in biology makes sense except in the light of evolution"
(Dobzhansky).
🧪 SECTION 2: The Scientific Method (Q31–55)
Q31. What are the steps of the scientific method? ANSWER Observation
→ Question → Hypothesis → Prediction → Experiment → Results →
Conclusion.
Q32. What is a hypothesis? ANSWER A testable, falsifiable explanation for
an observation.
Q33. What makes a hypothesis scientific? ANSWER It must be testable and
falsifiable — capable of being proven wrong.
Q34. What is the difference between inductive and deductive reasoning?
ANSWER Inductive reasoning draws general conclusions from specific
observations; deductive reasoning draws specific predictions from general
principles ("if…then" logic).
Q35. What is a controlled experiment? ANSWER An experiment in which
only one variable is changed at a time, while all other conditions are kept
constant.
Q36. What is the independent variable? ANSWER The variable that the
experimenter deliberately changes or manipulates.
COMPREHENSIVE QUESTIONS AND ANSWERS - CURRENT
VERSION (2026/2027)
University of Miami | General Biology
Q1. What are the seven properties shared by all living organisms?
ANSWER Order, reproduction, energy processing, response to the
environment, regulation (homeostasis), evolutionary adaptation, and growth and
development.
Q2. What does "order" mean as a property of life? ANSWER Living
organisms have highly organized, complex structures (e.g., cells, tissues,
organs).
Q3. What is homeostasis? ANSWER The ability of an organism to regulate
its internal environment to maintain stable conditions despite external changes.
Q4. What is evolutionary adaptation? ANSWER Inherited characteristics
that enhance an organism's ability to survive and reproduce in its environment.
Q5. What is the most inclusive level of biological organization? ANSWER
The biosphere.
Q6. List the levels of biological organization from smallest to largest.
ANSWER Atom → Molecule → Organelle → Cell → Tissue → Organ →
Organ system → Organism → Population → Community → Ecosystem →
Biosphere.
Q7. What is the basic unit of life? ANSWER The cell.
Q8. What is a population in biological terms? ANSWER All individuals of
the same species living in the same area.
Q9. What is a community? ANSWER All the different populations of species
living together in the same area.
Q10. What is an ecosystem? ANSWER A community of organisms plus the
nonliving (abiotic) environment.
Q11. What distinguishes a tissue from an organ? ANSWER A tissue is a
group of similar cells performing a specific function; an organ is made of
multiple tissue types working together.
,Q12. What does "energy processing" mean as a property of life? ANSWER
Organisms use energy from the environment (food, sunlight) to power their
activities.
Q13. What is reproduction as a property of life? ANSWER The ability of
organisms to produce offspring, either sexually or asexually.
Q14. What is "response to the environment"? ANSWER The ability of
organisms to react to stimuli in their surroundings.
Q15. What is growth and development as a property of life? ANSWER An
increase in size and complexity driven by genetic information.
Q16. What is an organelle? ANSWER A membrane-bound structure within a
cell that performs a specific function.
Q17. What level of organization is a single bacterium? ANSWER It is a
single-celled organism — it represents the cell level and organism level
simultaneously.
Q18. What is the biosphere? ANSWER The entire portion of Earth where
life exists, including land, water, and the atmosphere.
Q19. What is reductionism in biology? ANSWER The approach of
understanding complex systems by studying their simpler components.
Q20. What is emergent properties? ANSWER Properties that arise at higher
levels of organization that are not present in the parts alone.
Q21. Give an example of an emergent property. ANSWER Water's ability
to be liquid at room temperature emerges from its molecular structure; life itself
emerges from combinations of nonliving molecules.
Q22. What is systems biology? ANSWER An approach that attempts to
model the dynamic behavior of whole biological systems rather than just their
parts.
Q23. What does "negative feedback" mean in the context of regulation?
ANSWER A mechanism where the output of a system reduces or shuts off the
stimulus that produced it, helping maintain homeostasis.
Q24. Give a biological example of negative feedback. ANSWER When
blood glucose rises, insulin is released to lower it; when it drops, insulin release
is reduced.
, Q25. What is positive feedback? ANSWER A mechanism where the output
amplifies or intensifies the stimulus (e.g., uterine contractions during
childbirth).
Q26. What is natural selection? ANSWER The process by which individuals
with favorable heritable traits reproduce more successfully, leading to the
evolution of populations.
Q27. Who proposed the theory of natural selection? ANSWER Charles
Darwin (and Alfred Russel Wallace).
Q28. What is descent with modification? ANSWER Darwin's concept that
species evolve over time from common ancestors, with modifications
accumulating in lineages.
Q29. What is the most inclusive definition of evolution? ANSWER Descent
with modification — changes in heritable traits in populations over generations.
Q30. What unifying theme ties all of biology together? ANSWER
Evolution — "Nothing in biology makes sense except in the light of evolution"
(Dobzhansky).
🧪 SECTION 2: The Scientific Method (Q31–55)
Q31. What are the steps of the scientific method? ANSWER Observation
→ Question → Hypothesis → Prediction → Experiment → Results →
Conclusion.
Q32. What is a hypothesis? ANSWER A testable, falsifiable explanation for
an observation.
Q33. What makes a hypothesis scientific? ANSWER It must be testable and
falsifiable — capable of being proven wrong.
Q34. What is the difference between inductive and deductive reasoning?
ANSWER Inductive reasoning draws general conclusions from specific
observations; deductive reasoning draws specific predictions from general
principles ("if…then" logic).
Q35. What is a controlled experiment? ANSWER An experiment in which
only one variable is changed at a time, while all other conditions are kept
constant.
Q36. What is the independent variable? ANSWER The variable that the
experimenter deliberately changes or manipulates.
