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Unformatted text preview: What happens to Δ G when T goes down ? WHY? Δ G Δ H T Δ S 7500 300 5 7500 300 10 7500 300 15 7500 300 20 7500 300 25 7500 300 30 7500 300 35 7500 300 40 7500 300 45 7500 300 50 What happens to Δ G when Δ S goes up ? WHY? What happens to Δ G when Δ S goes down ? WHY? Why does decomposition of a dead animal happen in terms of energy? What would happen if we increase temperature? Why do we freeze food? Explain the process of energy coupling. Give an example. What would be the overall change in free energy if an enzyme where to couple the energy released from ATP to the production of Lglutamine from Lglutamic acid and ammonia? Would the reaction be spontaneous? What does spontaneous mean? Explain why plant cells need light energy to build sugar (in terms of energy). Population Growth Questions Rate Population Growth Exponential Growth Logistic Growth dY/dt dN/dt = B – D N r dt dN max = Ο Π Ξ Μ Ν Λ − = K N K N r dt dN max dY = amount of change B = birth rate D = death rate N = population size K = carrying capacity r max = maximum per capita growth rate of population Notes dt dN = t N Δ Δ = time in change size population in change = population growth rate Example 1: There are 300 falcons living in a certain forest at the beginning of 2013. Suppose that every year there are 50 falcons born and 30 falcons that die. a. What is the population growth rate (include units)? Interpret the value. b. What is the per capita growth rate of the falcons over a year? Interpret the value. c. Fill in the table and the construct a graph. d. Find the average rate of change for the falcon population from 2013 to 2018 (include units). Interpret the value. Year Population 2013 2014 2015 2016 2017 2018 Example 2: Kentwood, Michigan had a population of 49,000 in the year 2013. The infrastructure of the city allows for a carrying capacity of 60,000 people. r max = .9 for Kentwood. a. Is the current population above or below the carrying capacity? Will the population increase or decrease in the next year? b. What will be the population growth rate for 2013 (include units)? c. What will be the population size at the start of 2014. d. Fill in the following table. Then graph year vs. population size. Year Population size Population growth rate 2013 2014 2015 2016 2017 e. What happened to the population size over the years? What happened to the population growth rate over the years? f. Explain your answer from part (e) using what you know about carrying capacity. g. Explain your answer from part (e) using the formula: Ο Π Ξ Μ Ν Λ − = K N K N r dt dN max Primary Productivity – The rate at which organic materials are stored 6CO 2 + 6H 2 O → C 6 H 12 O 6 + 6O 2 One can determine Primary Productivity by measuring dissolved oxygen in the water (as it is hard to measure it in the air) Conversion Factors: 1 ml of O 2 = .536 mg of Carbon assimilated To convert: ppm O 2 = mg O 2 /L mg O 2 /L x 0.698 = ml O 2 /L ml O 2 /L x 0.536 = mg carbon fixed/L Fill in the table and Graph Net and Gross Productivity vs % of light...
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 Fall '11
 Boyle
 Biology, Demography, Standard Deviation, Population Ecology, Zygosity

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