Reference no: EM13743435
Pre-Lab Questions
1. Nitrogen fixation is a natural process by which inert or unreactive forms of nitrogen are transformed into usable nitrogen. Why is this process important to life?
2. Given when you have learned about the hydrogen bonding shared between nucleic acids in DNA, which pair is more stable under increasing heat: adenine and thymine, or cytosine and guanine? Explain why.
3. Which of the following is not an organic molecule; Methane (CH4), Fructose (C6H12O6), Ethanol (C6H12O), or Ammonia (NH3)? How do you know?
Experiment 1: Testing for Proteins
Post-Lab Questions
1. How did your a priori predictions from Table 1 compare to your actual results in Table 2? If there were any inconsistencies, explain why this occurred.
2. Identify the positive and negative controls used in this experiment. Explain how each of these controls are used, and why they are necessary to validate the experimental results.
3. Identify two regions which proteins are vital components in the human body. Why are they important to these regions?
4. Diet and nutrition are closely linked to the study of biomolecules. Describe one method by which you could monitor your food intake to ensure the cells in your body have the materials necessary to function.
Experiment 2: Testing for Reducing Sugars
Post-Lab Questions
1. Write a statement to explain the molecular composition of the unknown solution based on the results obtained during testing with each reagent.
2. What can you conclude about the molecular make-up of potatoes and onions based on the test you performed? Why might these foods contain these substance(s)?
3. What results would you expect if you tested ribose, a monosaccharide, with Benedict's solution? Biuret solution?
Experiment 3: What Household Substances are Acidic or Basic?
Post-Lab Questions
1. What is the purpose of determining the pH of the acetic acid and the sodium bicarbonate solution before testing the other household substances?
2. Compare and contrast acids and bases in terms of their H+ ion and OH- ion concentrations.
3. Name two acids and two bases you often use.
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Consumer-business-government and foreign sector
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Show the age structure of the population of a country
: Project: Population Pyramid Building. Population pyramids show the age structure of the population of a country or region. Different growth patterns caused by varying cultural values or war events or both help shape the pyramid
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Price of gasoline in the united states
: What do you think will happen to the price of gasoline in the future and why? What are some ways that the United States can keep the price of gasoline under control?
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Explain how price of a good you buy is affected by changes
: Explain how the price of a good you buy is affected by changes in the prices of (a) substitute goods and (b) complementary goods - Why does the demand curve slope downward?
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Testing for reducing sugars
: Testing for Reducing Sugars- Write a statement to explain the molecular composition of the unknown solution based on the results obtained during testing with each reagent
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Write a hypothesis and null hypothesis
: Determine which of the following observations (1-6) are testable. For those that are testable answer the following questions: Write a hypothesis and null hypothesis
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Data trends on unemployment and inflation
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Why was the firm investigated for antitrust behavior
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