Bio100 Final Exam -Fall Questions and Answers
Question 1.
Which factors cannot be affected by the warming of the global climate?
Correct Answer: None of the choices are correct (rain patterns, agriculture, sea
levels, wind patterns can all be affected).
Question 2.
What is the impact of exotic species on local ecosystems?
Correct Answer: Exotic species can disrupt local ecosystems by outcompeting
native species for resources.
Question 3.
What are vestigial structures?
Correct Answer: Organs or structures that have lost their original function
through evolution.
Question 4.
What is the role of decomposers in an ecosystem?
Correct Answer: Decomposers break down dead organic material, recycling
nutrients back into the ecosystem.
Question 5.
What is the carrying capacity of an environment?
Correct Answer: The population size that levels off in an ecosystem.
Question 6.
What is associated with 85% of threatened and endangered species?
Correct Answer: Habitat loss.
Question 7.
What defines a keystone species?
Correct Answer: A species on which many other species depend.
Question 8.
Match the type of selection with the correct descriptions: B) Bird clutches having 4-5 eggs
are more likely to hatch than larger or smaller clutch sizes.
Correct Answer: This describes stabilizing selection.
Question 9.
Where does translation take place in eukaryotes?
Correct Answer: In the cytoplasm.
Question 10.
What is the role of a dominant plant in defining a biome?
Correct Answer: It characterizes the ecosystem based on its features.
, Question 11.
What is an example of a parasitic relationship?
Correct Answer: Tapeworms obtaining nutrients from a host.
Question 12.
What phenomenon allows the human genome to encode multiple mRNAs from the same
genes?
Correct Answer: Alternative splicing.
Question 13.
What is the explanation for the presence of prehensile tails in New World monkeys?
Correct Answer: Monkeys in the New World needed a prehensile tail and
therefore evolved one.
Question 14.
What is biotic potential?
Correct Answer: The maximum reproductive capacity of an organism under
optimal environmental conditions.
Question 15.
What is a biome?
Correct Answer: A type of major land ecosystem determined mostly by climate
features.
Question 16.
In natural selection, what defines the individuals that are most fit?
Correct Answer: They reproduce the most.
Question 17.
What is the Central Dogma of gene expression?
Correct Answer: DNA is transcribed to produce mRNA, which is translated to
produce proteins.
Question 18.
What process occurs when nitrogen and phosphorus fertilize algae in water, resulting in
algal blooms?
Correct Answer: Eutrophication
Question 19.
What was Darwin's main principle of natural selection?
Correct Answer: Only the individuals that are best adapted to their environment
survive to reproduce.
Question 20.
What is environmental resistance?
Correct Answer: Factors that limit the growth of a population.
Question 1.
Which factors cannot be affected by the warming of the global climate?
Correct Answer: None of the choices are correct (rain patterns, agriculture, sea
levels, wind patterns can all be affected).
Question 2.
What is the impact of exotic species on local ecosystems?
Correct Answer: Exotic species can disrupt local ecosystems by outcompeting
native species for resources.
Question 3.
What are vestigial structures?
Correct Answer: Organs or structures that have lost their original function
through evolution.
Question 4.
What is the role of decomposers in an ecosystem?
Correct Answer: Decomposers break down dead organic material, recycling
nutrients back into the ecosystem.
Question 5.
What is the carrying capacity of an environment?
Correct Answer: The population size that levels off in an ecosystem.
Question 6.
What is associated with 85% of threatened and endangered species?
Correct Answer: Habitat loss.
Question 7.
What defines a keystone species?
Correct Answer: A species on which many other species depend.
Question 8.
Match the type of selection with the correct descriptions: B) Bird clutches having 4-5 eggs
are more likely to hatch than larger or smaller clutch sizes.
Correct Answer: This describes stabilizing selection.
Question 9.
Where does translation take place in eukaryotes?
Correct Answer: In the cytoplasm.
Question 10.
What is the role of a dominant plant in defining a biome?
Correct Answer: It characterizes the ecosystem based on its features.
, Question 11.
What is an example of a parasitic relationship?
Correct Answer: Tapeworms obtaining nutrients from a host.
Question 12.
What phenomenon allows the human genome to encode multiple mRNAs from the same
genes?
Correct Answer: Alternative splicing.
Question 13.
What is the explanation for the presence of prehensile tails in New World monkeys?
Correct Answer: Monkeys in the New World needed a prehensile tail and
therefore evolved one.
Question 14.
What is biotic potential?
Correct Answer: The maximum reproductive capacity of an organism under
optimal environmental conditions.
Question 15.
What is a biome?
Correct Answer: A type of major land ecosystem determined mostly by climate
features.
Question 16.
In natural selection, what defines the individuals that are most fit?
Correct Answer: They reproduce the most.
Question 17.
What is the Central Dogma of gene expression?
Correct Answer: DNA is transcribed to produce mRNA, which is translated to
produce proteins.
Question 18.
What process occurs when nitrogen and phosphorus fertilize algae in water, resulting in
algal blooms?
Correct Answer: Eutrophication
Question 19.
What was Darwin's main principle of natural selection?
Correct Answer: Only the individuals that are best adapted to their environment
survive to reproduce.
Question 20.
What is environmental resistance?
Correct Answer: Factors that limit the growth of a population.
