Scientific Method
Sustainability
Ecology (Quiz 1)
Ecology (PS & CR)
Ecology (the rest)
100
What are the steps of the scientific method in order?
Question/Purpose, Background Research, Hypothesis, Experiment, Analysis, Conclusion
100
What is sustainability?
Meeting present needs without compromising the ability of future generations to meet their own needs
100
What are the levels of biological organization?
Organism, population, community, ecosystem, biome, biosphere
100
What is the goal of photosynthesis?
Produce glucose from sun energy
100
What is commensalism?
One benefits, one is unaffected
200
Why is background research important?
To make an informed hypothesis
200
What are the three categories of indicators?
Ecological, Environmental, Social
200
What's the difference between ecosystem, population, and community?
Population: all individuals of one species
Community: all different populations of multiple species (biotic factors)
Ecosytem: Biotic AND abiotic factors
200
What are the inputs and outputs of cellular respiration?
In: Glucose and O2
Out: ATP, CO2, H2O
200
What is a keystone species?
Species that, if removed, can collapse the whole ecosystem by causing a trophic cascade
300
What is an independent variable and a dependent variable?
IV = variable that experimenter changes, DV = variable being measured
300
What is an ecological footprint?
A quantitative measurement that estimates the amount of resource consumption and waste production of an individual, community, population, or manufactured product (impact of something on the Earth)
300
What's the difference between an autotroph and a heterotroph?
Autotroph: produce their own food
Heterotroph: consume other organisms for food
300
True or False: The inputs of photosynthesis are the same as the outputs of cellular respiration and the outputs of photosynthesis are the same as the inputs of cellular respiration.
True
300
What is the difference between primary and secondary succession?
Primary begins with rock, secondary with soil after a disturbance like a fire
400
What is the difference between a controlled variable and a control group?
CV is a variable kept the same between all treatment groups, and CG is the group that does not receive the IV
400
Does this population appear to be sustainable?
Yes
400
What is ecology?
The study of the interactions between organisms and their physical environment
400
What is the first thing that happens to a molecule of glucose during cellular respiration?
Glycolysis -- broken down into two pyruvates
400
What is the role of bacteria in the nitrogen cycle?
Nitrogen-fixing bacteria break the triple bond of N2 gas and denitrifying bacteria help decompose dead organisms and put N2 gas back into the atmosphere
500
Why is it important to have a controlled experiment (only one IV)?
To know what specifically is affecting the DV
500
Describe what is happening to this population.
It has reached it's carrying capacity.
500
What is the tragedy of the commons?
Overuse of an unregulated common resource results in it being depleted
500
Why is O2 given off as a byproduct of the light-dependent reactions of photosynthesis?
It comes from the splitting of water for electrons
H2O becomes H+, H+, O, and 2e-
500
Explain the process of eutrophication, including the words "algae," "bacteria," and "oxygen."
Fertilizer runoff = algal bloom = bacteria decompose dead plants/algae = bacteria perform cellular respiration, removing O2 from the water = dead zone