Bio182 NAU Exam 1
What is TFR and how does it influence the predictions on future human
population?
Total Fertility Rate:
Average number of live births a woman has during her lifetime
Shows population growth
What are the 4 main human caused factors to the loss of biodiversity?
Habitat Destruction, Invasive Species, Pollution, Overexploitation
What is Biomagnification?
Tendency of certain chemicals to accumulate or build up within food chains
What is the other name for the global water cycle?
Hydrological cycle
Where does most of the water that reaches the atmosphere come from?
Evaporation and transpiration
How have humans influenced the water cycle?
Hydroelectric dams, tapping aquifers, deforestation
Estuaries, losing evapotranspiration
What are the 3 main biogeochemical cycles we discussed?
Carbon, Phosphorus, and Nitrogen
What is the definition of a community?
Assemblage of many populations that live in the same place at the same time
, What is Species richness?
Number of different species in each community
What is Species Diversity?
The variety of species that make up the community
What is the difference between Species Diversity and Richness?
Species diversity has more abundance/evenness
What is the role of metagenomics in helping estimates species diversity? What
types of organisms does it really help this task for?
Finding diversity of microorganisms
Collecting microbial genomes
Using cultures
Explain the intermediate-disturbance hypothesis
Highest number of species are maintained in communities with intermediate
levels of disturbance
What are disturbances? Be able to give some examples
Droughts, fires, hurricanes
Species interactions such as herbivory, predation, or parasitism
What is the name of the process that occurs after disturbances that is the system
trying to reset itself?
Ecological Succesion (Primary and Secondary)
Facilitation successional model
What is TFR and how does it influence the predictions on future human
population?
Total Fertility Rate:
Average number of live births a woman has during her lifetime
Shows population growth
What are the 4 main human caused factors to the loss of biodiversity?
Habitat Destruction, Invasive Species, Pollution, Overexploitation
What is Biomagnification?
Tendency of certain chemicals to accumulate or build up within food chains
What is the other name for the global water cycle?
Hydrological cycle
Where does most of the water that reaches the atmosphere come from?
Evaporation and transpiration
How have humans influenced the water cycle?
Hydroelectric dams, tapping aquifers, deforestation
Estuaries, losing evapotranspiration
What are the 3 main biogeochemical cycles we discussed?
Carbon, Phosphorus, and Nitrogen
What is the definition of a community?
Assemblage of many populations that live in the same place at the same time
, What is Species richness?
Number of different species in each community
What is Species Diversity?
The variety of species that make up the community
What is the difference between Species Diversity and Richness?
Species diversity has more abundance/evenness
What is the role of metagenomics in helping estimates species diversity? What
types of organisms does it really help this task for?
Finding diversity of microorganisms
Collecting microbial genomes
Using cultures
Explain the intermediate-disturbance hypothesis
Highest number of species are maintained in communities with intermediate
levels of disturbance
What are disturbances? Be able to give some examples
Droughts, fires, hurricanes
Species interactions such as herbivory, predation, or parasitism
What is the name of the process that occurs after disturbances that is the system
trying to reset itself?
Ecological Succesion (Primary and Secondary)
Facilitation successional model
