Carbohydrates Structure and Function
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Questions and Answers

Why does ice float?

  • Because of high specific heat
  • Because of hydrogen bonds (correct)
  • Because of temperature buffer
  • Because of evaporative cooling
  • What happens to the pH of a solution as the concentration of hydronium/hydrogen ion increases?

  • It decreases (correct)
  • It increases
  • It stays the same
  • It becomes neutral
  • What is the effect of evaporative cooling on an organism's body temperature?

  • It has no effect on body temperature
  • It maintains a stable body temperature
  • It lowers the body temperature (correct)
  • It raises the body temperature
  • What is the term for the amount of energy required to change the temperature of 1 gram of water by 1°C?

    <p>Specific heat</p> Signup and view all the answers

    What is the purpose of hydrogen bonds in liquid water?

    <p>To facilitate the breaking and re-forming of bonds</p> Signup and view all the answers

    What type of bond forms between oxygen and hydrogen within a water molecule?

    <p>Polar covalent bond</p> Signup and view all the answers

    What is the term for the attraction between water molecules and other polar substances?

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

    What is responsible for the ability of water to dissolve a wide variety of substances?

    <p>Its partial positive and negative charges</p> Signup and view all the answers

    What is the result of the interaction of hydrogen bonds between water molecules at the surface of the water?

    <p>Surface Tension</p> Signup and view all the answers

    What is the term for the ability of water to flow through narrow spaces, such as the xylem of plants?

    <p>Capillary Action</p> Signup and view all the answers

    What is the ratio of C, H, and O in carbohydrates?

    <p>1:2:1</p> Signup and view all the answers

    Which type of carbohydrate is found in the exoskeleton of arthropods?

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

    What type of bond links two monosaccharides together to form a disaccharide?

    <p>Glycosidic linkage</p> Signup and view all the answers

    What is the main difference between saturated and unsaturated fatty acids?

    <p>The presence of double bonds</p> Signup and view all the answers

    Which nucleic acid is found in animals?

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

    What is the bond between the carboxyl and amino groups in amino acids?

    <p>Peptide bond</p> Signup and view all the answers

    What is the directionality of DNA and RNA?

    <p>5'3'</p> Signup and view all the answers

    What is the type of sugar found in DNA?

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

    What is the general structure of phospholipids?

    <p>Glycerol and 2 fatty acids</p> Signup and view all the answers

    What type of bond is formed between different polypeptides in quaternary protein structure?

    <p>Any type of bond</p> Signup and view all the answers

    What is the main characteristic of lipids?

    <p>They are nonpolar</p> Signup and view all the answers

    What is the term for the fluid found inside the cell?

    <p>Cytosolic fluid</p> Signup and view all the answers

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