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Which chemical elements are found in carbohydrates?

Chemistry

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Step-by-step solution

13 steps

11.

  1. Examine the table to find the time taken for the reaction to be completed at each pH value.

  2. Identify the pH at which the time taken is the shortest, as this indicates the optimum pH for the enzyme's activity.

    • At pH 1, time = 95 s
    • At pH 3, time = 64 s
    • At pH 5, time = 42 s
    • At pH 7, time = 35 s
    • At pH 9, time = 66 s
    • At pH 11, time = 88 s
  3. The shortest time is 35 seconds, which occurs at pH 7.

    • C

    12.

  4. Recall the basic chemical composition of carbohydrates.

  5. Carbohydrates are organic compounds primarily composed of carbon, hydrogen, and oxygen atoms, typically in a ratio of Cx(H2O)yC_x(H_2O)_y.

    • A

    13.

  6. Understand the function of protease enzymes.

    Protease enzymes break down proteins.

  7. Identify the products of protein digestion.

    Proteins are polymers made of amino acids, so their breakdown yields amino acids.

  8. Interpret the observation.

    The change from a cloudy suspension to a clear solution indicates that the large protein molecules (which cause cloudiness) have been broken down into smaller, soluble molecules.

    • A

    14.

  9. Write down the word equation for photosynthesis.

    Carbon dioxide+Water→light and chlorophyllGlucose+Oxygen\text{Carbon dioxide} + \text{Water} \xrightarrow{\text{light and chlorophyll}} \text{Glucose} + \text{Oxygen}
  10. Match the given phrases to the components of the equation

      1. carbon dioxide and water (reactants)
      1. light and chlorophyll (conditions)
      1. glucose and oxygen (products)
  11. Arrange these phrases into the correct sequence for the word equation.

    1→in the presence of 231 \xrightarrow{\text{in the presence of } 2} 3
    • B

    15.

  12. Recall the symptoms associated with scurvy.

  13. Scurvy is caused by a deficiency of vitamin C, and common symptoms include general weakness, anemia, and gum disease, which manifests as bleeding gums.

    • A
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