Advanced Placement (AP)

Researchers grew populations of identical Escherichia coli (E. coli) bacteria in a growth medium that contained a low concentration of glucose and a high concentration of citrate, a substance that is not typically consumed by E. coli. For thousands of generations, the bacteria used only glucose as an energy source and grew relatively slowly and to a low density because of the low concentration of glucose. After about 30,000 generations, one population emerged that began to rapidly grow to a much higher density. The researchers hypothesized that the bacteria evolved the ability to use citrate as an energy source and referred to them as Cit+. To test the hypothesis, the researchers grew separate populations of the Cit+ bacteria and bacteria from the original population (Cit) in a growth medium that contained only citrate. Identify the dependent variable measured in the experiments.
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What was the opening price of dow jones industrial average may 31, 2018 in the format of xxxxx.xx
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John Augustus supervised the probation of1. Only those convicted of the most serious crimes 2. Men 3. Juveniles 4. Women
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comprehensive insurance is when your insurance company usually A cove just collision a lot of cars at once B includes health insurance for any injury C covers collision and physical damage D cant help you is you are driving in an area that has a higher rate of accidents and crimes
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According to the passage, the only limitation on a kings divine right is ? a. ) the power of church b. ) the countrys decisionsc. ) a requirement that he do good d. ) his own desires
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What type of foam system will be found at a property that stores large quantities of flammable and combustible liquids?A.Hybrid foamC.High expansionB.Low expansionD.Medium expansion
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give atleast five victims of frustrated killing in the philippines.
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Once a slide is prepared and placed onto the microscope, the magnification and focus need to be altered. Describe how to change the magnification and bring the image into focus using a light microscope like the one in the simulation.
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Last year Joan's salary was $18,000. If she receives a $900 raise for this year, what percent of last year's salary is her raise?
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a club had 3 boys and 5 girls if equal number of girls and boys join the clus, such that ratio of boys to girls becomes 3:4 then what is the total sterenght of the club
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Allen needs to take notes to indicate levels of importance for the content. the cheating method the table method the sentence method the outlining method
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How is this a story about having a voice in society, about who gets to talk and whogets heard? (Eleven)
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Drag each label to the correct location on the image.Classify the examples as procedural or declarative knowledge.spraying homemade pesticideshaving knowledge of the time of harvest describing symptoms of a diseasedharvesting a set of green leavesknowing about gardening and compostingProceduralplanting a vegetable gardenDeclarative
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Source: William E. Leuchtenburg, Franklin D. Roosevelt and the New Deal, 1932-1940 (1963).The New Deal achieved a more just society by recognizing groups which had been largely unrepresentedstaple farmers, industrial workers, particular ethnic groups, and the new intellectual-administrative class. Yet this was still a halfway revolution. It swelled the ranks of the bourgeoisie but left many Americanssharecroppers, slum dwellers, most Negroesoutside the new equilibrium The New Dealers perceived that they had done more in those years than had been done in any comparable period of American history, but they also saw that there was much still to be done, much, too, that continued to baffle them.Briefly explain how ONE development from 1932 to 1941 not directly mentioned in the excerpts challenges Leuchtenburgs argument.
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Which of the following scenarios is best solved using a regional planning model?
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Which of these study habits is a student using when taking a self-assessment to practice before an exam? (Select all that apply.)A. mnemonicsB. spacing effectC. testing effectD. retrieval cuesE. SQ3R method
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There are many ways energy conservation can reduce a country's energy use per capita. The table below shows conversion factors for different types of renewable and non-renewable energy. Use the table to answer the questions:Conversion Factors1 kWh (kilowatt-hour) 3,412 BtuU.S Average Utility Rate $0.12/kWh1) Using green design features is one way of addressing energy conservation. This includes using energy efficient appliances. Calculate the kilowatt-hour of energy used per year by an average 255-watt washing machine, used three hours a day.2) Calculate the amount of energy and money saved by using a more efficient 180-watt washing machine instead of a 255-watt washing machine. Based on energy savings, provide reasoning for using more green design features in homes.3) Describe two methods for conserving energy around a home that could reduce energy use per capita for a household.
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Prakriti keeps her books of account under single entry system and supplied the following summary of assets and liabilities of his business for year ending 31st December, 2019: Vehicles........... Plant and machinery..... Fumiture... Inventories Loan. Additional information Rs.40,000 Rs.10,000 Account receivable.... Rs.16,000 Outstanding expenses. Rs.15,000 Cash and bank balance.. Create a provision for doubtful debts at 2% Depreciate furniture and machinery by 10%. Required: Closing statement of affairs to find out closing capital. Rs. 25,000 Rs.30,000 Rs.3,000 Rs.19,000 1.16.4001
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1. Is the narrator a reliable source of information? Why or why not? What may have been left out of the narrators story?How does the narrator change throughout the text? What causes the narrator to change?
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Read the following excerpt carefully before choosing your answer. This passage is from Senator Marco Rubio's April 2015 Speech at Miami's Freedom Tower. "My father became a bartender. My mother a cashier, a maid and a Kmart stock clerk. They never made it big. But they were successful. "The purpose of including this line at the beginning of his speech is to appeal to the audience's sense of injustice by showing how unattainable the "American Dream" is engage the audience by establishing his authority on the subject add reliability to his argument by quoting expert opinion on the "American Dream" establish credibility through examples that show he is personally acquainted with the issue
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Explain the possible consequences of devolution.
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Write a paragraph highlighting two ways you can prepare for the ACT. Choose one that you will use and give the reason
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Determine the degree of the Maclaurin polynomial required for the error in the approximation of the function at the indicated value of x to be less than 0.001. (1/((0.2)+1)) (1/(x+1))
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How does infrastructure, such as the quality transportation system, act as a centripetal force?
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