Chemistry Of Life - Quiz 2

8 Questions | Total Attempts: 4188

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Chemistry Of Life - Quiz 2

The is our second online quiz for "The Chemistry of Life" unit. Orange juice is a common acid.


Questions and Answers
  • 1. 
    The neutral pH value is _______.
    • A. 

      8

    • B. 

      9

    • C. 

      10

    • D. 

      7

  • 2. 
    In a salt water solution, water is the ________.
    • A. 

      Solute

    • B. 

      Solvent

    • C. 

      Base

    • D. 

      Acid

  • 3. 
    Isotopes differ in the number of __________.
    • A. 

      Protons

    • B. 

      Atoms

    • C. 

      Electrons

    • D. 

      Neutrons

  • 4. 
    A covalent bond is formed by the
    • A. 

      Transfer of electrons

    • B. 

      Sharing of electrons

    • C. 

      Gaining of electrons

    • D. 

      Losing electrons

  • 5. 
    Proteins are made up of
    • A. 

      Lipids

    • B. 

      Amino acids

    • C. 

      Carbohydrates

    • D. 

      Nucleic acids

  • 6. 
    In the early 1900s, many children had a disease called rickets. Research showed that the children had a deficiency of a vitamin that is necessary for the proper formation of bones. Which of these vitamins was lacking in the diets of these children?(from www.mdk12.org)
    • A. 

      Vitamin A

    • B. 

      Vitamin C

    • C. 

      Vitamin D

    • D. 

      Vitamin k

  • 7. 
    (from www.mdk12.org)Use the information and the diagram below to answer the following item. Catalase is an enzyme found in the tissues of plants and animals, including humans. Catalase helps prevent a toxic buildup of hydrogen peroxide in cells by breaking it down into water and oxygen gas. Several students conduct an experiment to test the effects of pH on the activity of catalase. Each test tube contains a solution of hydrogen peroxide and water at various pH levels. The liver tissue is a source of catalase. The diagram below represents the results of their experiment. Based on the students’ results, catalase works best at a pH of
    • A. 

      1

    • B. 

      4

    • C. 

      7

    • D. 

      10

  • 8. 
    Use the information and the diagram below to answer the following item. Catalase is an enzyme found in the tissues of plants and animals, including humans. Catalase helps prevent a toxic buildup of hydrogen peroxide in cells by breaking it down into water and oxygen gas. Several students conduct an experiment to test the effects of pH on the activity of catalase. Each test tube contains a solution of hydrogen peroxide and water at various pH levels. The liver tissue is a source of catalase. The diagram below represents the results of their experiment.Which of the following are the building blocks of catalase?
    • A. 

      Monosaccharides

    • B. 

      Nucleic acids

    • C. 

      Vitamins

    • D. 

      Amino acids

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