Bio100 Final Exam: Key Concepts from Chapters 1-21 Questions and
Answers
Question 1.
What are biomes?
Correct Answer: Biomes are large geographic biotic units characterized by
specific climate conditions, vegetation types, and animal communities.
Question 2.
How do fungi get their nutrition?
Correct Answer: Fungi obtain their nutrition through absorption, breaking down
organic matter externally and then absorbing the nutrients.
Question 3.
What characteristics are shared by members of the animal kingdom?
Correct Answer: Members of the animal kingdom share characteristics such as
being multicellular, heterotrophic, having specialized tissues, and undergoing
development from a blastula stage.
Question 4.
What is DNA replication?
Correct Answer: DNA replication is the process by which a cell duplicates its
DNA before cell division, ensuring that each daughter cell receives an identical
copy.
Question 5.
What is ATP?
Correct Answer: ATP (adenosine triphosphate) is the primary energy carrier in
cells, providing energy for various cellular processes.
Question 6.
What is the most common type of ecosystem on Earth?
Correct Answer: The most common type of ecosystem on Earth is the terrestrial
ecosystem, which includes forests, grasslands, and deserts.
Question 7.
What is a macromolecule?
Correct Answer: A macromolecule is a large molecule composed of smaller
subunits called monomers; the four types of macromolecules are carbohydrates,
proteins, lipids, and nucleic acids.
Question 8.
What are trophic levels?
Correct Answer: Trophic levels are the hierarchical levels in an ecosystem,
representing the flow of energy and nutrients from producers to various levels
of consumers.
, Question 9.
What actions can we take to conserve biodiversity?
Correct Answer: Actions to conserve biodiversity include protecting natural
habitats, implementing sustainable practices, restoring ecosystems, and
promoting conservation education.
Question 10.
What is the process of recovery from disturbance within an ecosystem?
Correct Answer: The process of recovery from disturbance within an ecosystem
is called ecological succession, where the ecosystem gradually returns to a state
of equilibrium.
Question 11.
What is ecosystem equilibrium?
Correct Answer: Ecosystem equilibrium is a state where the ecosystem remains
stable over time, with balanced interactions among its biotic and abiotic
components.
Question 12.
What is base complementarity?
Correct Answer: Base complementarity refers to the specific pairing of
nitrogenous bases in DNA, where adenine pairs with thymine and cytosine pairs
with guanine.
Question 13.
What is natural selection?
Correct Answer: Natural selection is the process by which individuals with
favorable traits are more likely to survive and reproduce, leading to the
adaptation of populations over time.
Question 14.
What are the major differences between mitosis and meiosis?
Correct Answer: Mitosis results in two identical daughter cells, while meiosis
produces four genetically diverse gametes, with two rounds of division and
reduction of chromosome number.
Question 15.
What are the two models of population growth?
Correct Answer: The two models of population growth are exponential growth
(unlimited resources) and logistic growth (limited resources), each appropriate
under different environmental conditions.
Question 16.
What are the differences between animal and plant cells?
Correct Answer: Animal cells lack a cell wall and chloroplasts, while plant cells
have both; plant cells also have a large central vacuole for storage.
Question 17.
What is the central dogma of molecular biology?
Correct Answer: The central dogma of molecular biology describes the flow of
genetic information from DNA to RNA (transcription) and then to proteins
Answers
Question 1.
What are biomes?
Correct Answer: Biomes are large geographic biotic units characterized by
specific climate conditions, vegetation types, and animal communities.
Question 2.
How do fungi get their nutrition?
Correct Answer: Fungi obtain their nutrition through absorption, breaking down
organic matter externally and then absorbing the nutrients.
Question 3.
What characteristics are shared by members of the animal kingdom?
Correct Answer: Members of the animal kingdom share characteristics such as
being multicellular, heterotrophic, having specialized tissues, and undergoing
development from a blastula stage.
Question 4.
What is DNA replication?
Correct Answer: DNA replication is the process by which a cell duplicates its
DNA before cell division, ensuring that each daughter cell receives an identical
copy.
Question 5.
What is ATP?
Correct Answer: ATP (adenosine triphosphate) is the primary energy carrier in
cells, providing energy for various cellular processes.
Question 6.
What is the most common type of ecosystem on Earth?
Correct Answer: The most common type of ecosystem on Earth is the terrestrial
ecosystem, which includes forests, grasslands, and deserts.
Question 7.
What is a macromolecule?
Correct Answer: A macromolecule is a large molecule composed of smaller
subunits called monomers; the four types of macromolecules are carbohydrates,
proteins, lipids, and nucleic acids.
Question 8.
What are trophic levels?
Correct Answer: Trophic levels are the hierarchical levels in an ecosystem,
representing the flow of energy and nutrients from producers to various levels
of consumers.
, Question 9.
What actions can we take to conserve biodiversity?
Correct Answer: Actions to conserve biodiversity include protecting natural
habitats, implementing sustainable practices, restoring ecosystems, and
promoting conservation education.
Question 10.
What is the process of recovery from disturbance within an ecosystem?
Correct Answer: The process of recovery from disturbance within an ecosystem
is called ecological succession, where the ecosystem gradually returns to a state
of equilibrium.
Question 11.
What is ecosystem equilibrium?
Correct Answer: Ecosystem equilibrium is a state where the ecosystem remains
stable over time, with balanced interactions among its biotic and abiotic
components.
Question 12.
What is base complementarity?
Correct Answer: Base complementarity refers to the specific pairing of
nitrogenous bases in DNA, where adenine pairs with thymine and cytosine pairs
with guanine.
Question 13.
What is natural selection?
Correct Answer: Natural selection is the process by which individuals with
favorable traits are more likely to survive and reproduce, leading to the
adaptation of populations over time.
Question 14.
What are the major differences between mitosis and meiosis?
Correct Answer: Mitosis results in two identical daughter cells, while meiosis
produces four genetically diverse gametes, with two rounds of division and
reduction of chromosome number.
Question 15.
What are the two models of population growth?
Correct Answer: The two models of population growth are exponential growth
(unlimited resources) and logistic growth (limited resources), each appropriate
under different environmental conditions.
Question 16.
What are the differences between animal and plant cells?
Correct Answer: Animal cells lack a cell wall and chloroplasts, while plant cells
have both; plant cells also have a large central vacuole for storage.
Question 17.
What is the central dogma of molecular biology?
Correct Answer: The central dogma of molecular biology describes the flow of
genetic information from DNA to RNA (transcription) and then to proteins
