lecture 5
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Questions and Answers

Which component of starch is an unbranched chain of several hundred to a few thousand glucose units?

  • Diosgenin
  • Sapogenins
  • Amylopectin
  • Amylose (correct)
  • From which plant is the traditional Hawaiian dish poi prepared?

  • Tapioca
  • Yams
  • Cassava
  • Taro (correct)
  • What is the main nutrient found in yams?

  • Protein
  • Sapogenins
  • Starch (correct)
  • Steroids
  • Where have yams been cultivated for over 5000 years?

    <p>Tropical Africa</p> Signup and view all the answers

    Why might the dough rise and produce a lighter, tastier bread if set aside before baking?

    <p>Accidental introduction of yeast from the air</p> Signup and view all the answers

    What is a possible reason for the domestication of the cat in China 5300 years ago?

    <p>Protecting stored grain from rodents</p> Signup and view all the answers

    Why is rice considered a staple food for over 2 billion people, mainly in Asia?

    <p>Cultivation dating back thousands of years</p> Signup and view all the answers

    What is a significant characteristic of Oryza sativa, the main cultivated rice in most areas of the world?

    <p>Loss of predator avoidance</p> Signup and view all the answers

    What is the most widely grown type of corn in the United States?

    <p>Dent corn</p> Signup and view all the answers

    How are the grains (kernels) of corn different from other cereals?

    <p>They are covered with husks</p> Signup and view all the answers

    What is the primary use of corn according to the text?

    <p>Mainly used for animal feed</p> Signup and view all the answers

    Which component of starch is more prominent in hard starch compared to soft starch?

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

    What adaptation of the rice plant allows it to survive in flooded or waterlogged soils?

    <p>Air chambers in the stem</p> Signup and view all the answers

    In which type of fields is rice typically cultivated?

    <p>Flooded fields</p> Signup and view all the answers

    What is the role of Azolla in rice paddies?

    <p>A nitrogen-fixing fern that helps provide nitrogen to the rice plants</p> Signup and view all the answers

    Where were doglike animals found 30,000 years ago, according to the text?

    <p>Europe and Siberia</p> Signup and view all the answers

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