Nutrition and Digestion Quiz
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Questions and Answers

In a chemical reaction, what are located to the left of the arrow?

  • Products
  • Reactants (correct)
  • Substrates
  • Byproducts
  • Which of the following are sources of amino acids that plants use to make proteins?

  • Atoms from glucose
  • Amino acids from the ground (correct)
  • Amino acids from animals
  • Atoms from nitrogen compounds (correct)
  • What percentage of energy is typically transferred to the next trophic level?

  • 10% (correct)
  • 50%
  • 0%
  • 90%
  • To produce protein 1, which energy level requires the most energy?

    <p>4</p> Signup and view all the answers

    How much energy would be consumed to create protein 3 if each bond requires 10 kcal?

    <p>20 kcal</p> Signup and view all the answers

    What can be inferred if an organism is lacking canine teeth?

    <p>Canine teeth are not necessary for the food they eat</p> Signup and view all the answers

    Where does digestion begin in the body?

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

    Which statement is true regarding macromolecule consumption across organisms?

    <p>Different organisms may have varying requirements for macromolecule percentages</p> Signup and view all the answers

    In a food chain, what does an arrow represent?

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

    What is the primary source of energy for elephants?

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

    Which type of bonds are most abundant in macromolecules with high energy content?

    <p>Carbon-Hydrogen</p> Signup and view all the answers

    Which organisms have the capability to fix nitrogen into a usable form?

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

    What is the correct statement about enzymes?

    <p>Enzymes are proteins that catalyze chemical reactions</p> Signup and view all the answers

    Study Notes

    Digestion & Food Chains

    • Digestion starts in the mouth.
    • Energy is transferred through food chains.
    • Arrows in food chains represent energy flow from one organism to another.
    • Organisms use different macromolecules for energy, like carbohydrates for elephants and proteins for lions.
    • Macromolecules containing more carbon-hydrogen bonds have the most energy.

    Nutrition and Food Chemistry

    • Herbivores have large molars for grinding plant matter.
    • Carnivores have large canines for tearing meat.
    • Enzymes are proteins that speed up chemical reactions.
    • Lactase is an enzyme specifically for digesting lactose.
    • Bonds are broken during digestion, releasing water and energy.

    Building Organic Molecules

    • Plants use nitrogen from the soil and glucose from photosynthesis to build proteins.
    • Proteins are built from amino acids.
    • About 10% of energy is transferred to the next trophic level in a food chain.

    Energy in Chemical Reactions

    • Reactants are on the left side of a chemical reaction's equation, while products are on the right side.
    • Breaking bonds releases energy.
    • Creating bonds requires energy.

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    Description

    Test your knowledge on the processes of digestion and the structure of food chains. Explore how energy flows through different organisms and the role of macromolecules in nutrition. This quiz covers essential concepts related to digestion, enzymes, and the building of organic molecules.

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