High-Fructose Corn Syrup and Enzyme Glucose Isomerase Quiz
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Questions and Answers

What enzyme is used to convert a substantial fraction of glucose to fructose in high fructose syrup?

  • Sucrase
  • Maltase
  • Amylase
  • Glucose isomerase (correct)
  • Why is high-fructose corn syrup (HFCS) commonly used in processed foods and beverages in the U.S?

  • It is more expensive than sugar, indicating higher quality
  • It is easier to extract from corn than sugar from sugarcane
  • It is less sweet than sugar, making it suitable for a wide range of products
  • It has a higher microbiological stability than sugar (correct)
  • Which type of high fructose corn syrup (HFCS) is sweeter than sucrose?

  • HFCS-55 (correct)
  • HFCS-42
  • HFCS-30
  • HFCS-90
  • What are sugar alcohols such as maltitol and erythritol primarily made from?

    <p>Reducing sugars</p> Signup and view all the answers

    Why are sugar alcohols like sorbitol and mannitol used as sweeteners?

    <p>They have lower caloric content compared to regular sugar</p> Signup and view all the answers

    Which activity does the text primarily focus on involving the application of sugar and starch manufacturing theories?

    <p>Daily biotechnology tasks</p> Signup and view all the answers

    What are the major types of microalgae mentioned in the text?

    <p>Diatoms, green algae, golden brown, blue-green algae</p> Signup and view all the answers

    What is the economic advantage of using animal fats for biodiesel production compared to plant crops?

    <p>Animal fats are priced more favorably for conversion</p> Signup and view all the answers

    Why is water removal important in the biodiesel production process?

    <p>Water causes hydrolysis of triglycerides</p> Signup and view all the answers

    Which chemical reactions are involved in biodiesel production?

    <p>Transesterification and esterification</p> Signup and view all the answers

    What is the process of producing biodiesel from animal fats known as?

    <p>Transesterification</p> Signup and view all the answers

    Which feedstock is commonly used in biodiesel production according to the text?

    <p>Yellow grease</p> Signup and view all the answers

    What is one limiting factor in the industrial uses of vegetable oils?

    <p>Susceptibility to becoming rancid</p> Signup and view all the answers

    Apart from being used as cooking oil, what is another use of biofuel mentioned in the text?

    <p>Oil spill cleanup</p> Signup and view all the answers

    In what industry are vegetable oils increasingly used as insulators?

    <p>Electrical</p> Signup and view all the answers

    What is one environmental impact mentioned in the text associated with vegetable oils?

    <p>Toxic effect on animals and plants</p> Signup and view all the answers

    Which of the following is NOT mentioned as an industrial use of vegetable oils?

    <p>Power generation</p> Signup and view all the answers

    Apart from being used as fuel transportation, what other use of biofuel is highlighted in the text?

    <p>Pet food additive</p> Signup and view all the answers

    What can happen when ignition sources are present in the context of biofuels?

    <p>Catch fire</p> Signup and view all the answers

    Which action is strictly prohibited in relation to the document according to the text?

    <p>Reproduction without prior written permission</p> Signup and view all the answers

    What environmental impact is associated with biofuels mentioned in the text?

    <p>Helping reduce global warming</p> Signup and view all the answers

    What happens when dry clay contacts floating oil based on the text?

    <p>Oil-mineral aggregates are formed</p> Signup and view all the answers

    Why is wetting dry clay with water a less efficient process for interacting with oil according to the text?

    <p>It increases the mass of clay needed to sink oil</p> Signup and view all the answers

    Under what condition can sending oil to the bottom of a body of water be an acceptable remedy for spills according to the text?

    <p>If the oil can be biodegraded in the sediment</p> Signup and view all the answers

    What is the main ability possessed by soap and detergent when dissolved in water?

    <p>Removing dirt from surfaces</p> Signup and view all the answers

    Why is it important for oil droplets and dirt particles to be suspended in a stable and highly dispersed condition in the detergent solution?

    <p>To prevent redeposition on the cleaned surface</p> Signup and view all the answers

    Why are small oil droplets or fine dirt particles preferred in washing fabrics and materials?

    <p>Because they are more easily carried through the material interstices</p> Signup and view all the answers

    What would happen if oil droplets and dirt particles were not deflocculated in the detergent solution?

    <p>They would coalesce into larger aggregates</p> Signup and view all the answers

    What is the consequence of oil droplets and dirt particles redepositing on a cleansed surface?

    <p>Reduction in the cleanliness of the surface</p> Signup and view all the answers

    Which process would be hindered if relatively large oil droplets or dirt particles were present in washing fabrics and materials?

    <p>Carrying process through interstices</p> Signup and view all the answers

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