bone ID

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lonelygirl
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260828
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bone ID
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2014-02-08 03:50:04
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Biology 103A S14
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Mastering A&P
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  1. What do these four elements have in common?



    A. They all have an incomplete valence electron shell.
    B. They are all generally unreactive elements.
    C. They all have the same number of electrons in their first electron shell.
    D. They all have the same number of protons in their nuclei.
    A. They all have an incomplete valence electron shell.
    (this multiple choice question has been scrambled)
  2. Which of the following accurately describes what is occurring in the illustrated reaction?



    A. A single covalent bond is formed between carbon and each of the four hydrogen atoms.
    B. A hydrogen bond is formed between carbon and the four hydrogen atoms.
    C. A quadruple covalent bond is formed between carbon and one hydrogen atom.
    D. An ionic bond is formed between carbon and the four hydrogen atoms.
    A. A single covalent bond is formed between carbon and each of the four hydrogen atoms.
    (this multiple choice question has been scrambled)
  3. What explains the negative charge on the oxygen atom within the water molecule?



    A. Electrons are transferred from hydrogen to oxygen during the formation of an ionic bond.
    B. Hydrogen atoms have a stronger pull on the electrons shared within a covalent bond formed between oxygen and hydrogen.
    C. Protons are transferred from oxygen to hydrogen during the formation of an ionic bond.
    D. Oxygen atoms have a stronger pull on the electrons shared within a covalent bond formed between oxygen and hydrogen.
    D. Oxygen atoms have a stronger pull on the electrons shared within a covalent bond formed between oxygen and hydrogen.
    (this multiple choice question has been scrambled)
  4. What is the classification of a solution with a pH of 8.3?

    A. buffered solution
    B. alkaline solution
    C. neutral solution
    D. acidic solution
    B. alkaline solution
    (this multiple choice question has been scrambled)
  5. All amino acids (such as the four represented in the figure) contain ______.



    A. an amine group and a carboxyl group
    B. phosphorous and nitrogen
    C. a nitrogen-containing base and a pentose sugar
    D. an amine group and a fatty acid
    A. an amine group and a carboxyl group
    (this multiple choice question has been scrambled)
  6. Which of the following statements is true regarding the enzyme-catalyzed reaction (B) compared to the uncatalyzed reaction (A)?



    A. The products of the reaction with enzyme contain more chemical potential energy.
    B. Less energy input is required to start the reaction in the presence of enzyme.
    C. The reaction in the presence of enzyme releases more energy.
    D. All of the listed responses are true.
    E. The reaction in the presence of enzyme will form larger products.
    B. Less energy input is required to start the reaction in the presence of enzyme.
    (this multiple choice question has been scrambled)
  7. Which organic molecules form the major structural materials of the body?

    A. lipids
    B. proteins
    C. carbohydrates
    D. nucleic acids
    B. proteins
    (this multiple choice question has been scrambled)
  8. Foods are broken down into their building blocks by adding water. This would be an example of which characteristic of water?

    A. Water has a high heat of vaporization.
    B. Water acts as a cushion.
    C. Water acts as a reactant.
    D. Water acts as a lubricant.
    C. Water acts as a reactant.
    (this multiple choice question has been scrambled)
  9. Water acts to dissolve molecules in the body. How does water dissolve the salt (NaCl) in your mouth from a salty pretzel?

    A. Water acts as a cofactor for enzymes that dissolve the salt.
    B. Water acts as a solvent because the partial negative charge on the oxygen in water attracts sodium, while the partial positive charge on hydrogen attracts chloride. This results in the separation of sodium from chloride, thus breaking the ionic bond.
    C. When water is added to the NaCl, NaCl is broken down by adding OH- to one element and H+ to the other. This is known as hydrolysis.
    B. Water acts as a solvent because the partial negative charge on the oxygen in water attracts sodium, while the partial positive charge on hydrogen attracts chloride. This results in the separation of sodium from chloride, thus breaking the ionic bond.
    (this multiple choice question has been scrambled)
  10. In plasma, a typical body fluid, protein floating around would be considered to be which of the following?

    A. a solute, specifically both a colloid and an electrolyte
    B. a solute, specifically both a colloid and a nonelectrolyte
    C. a solvent
    A. a solute, specifically both a colloid and an electrolyte
    (this multiple choice question has been scrambled)
  11. Electrolytes are charged particles called ions that are dissolved in body fluids. Which of the
    following ions would be considered a major anion in the body?

    A. chloride
    B. sodium
    C. calcium
    D. potassium
    A. chloride
    (this multiple choice question has been scrambled)
  12. Which pH is more acidic, a pH of 3, a pH of 7, or a pH of 9?

    A. pH of 9
    B. pH of 3
    C. pH of 7
    B. pH of 3
    (this multiple choice question has been scrambled)
  13. Cortisol is a type of lipid hormone. Which type of lipid would cortisol be classified as?

    A. triglyceride
    B. steroid
    C. phospholipid
    B. steroid
    (this multiple choice question has been scrambled)
  14. The three atoms shown represent different ______.



    A. cells
    B. molecules
    C. elements
    D. isotopes
    D. isotopes
    (this multiple choice question has been scrambled)
  15. Which four elements comprise approximately 96% of our body weight?

    A. carbon, oxygen, hydrogen, and nitrogen.
    B. carbon, oxygen, potassium, and sodium.
    C. carbon, oxygen, iron, and potassium
    D. carbon, oxygen, hydrogen, and potassium.
    A. carbon, oxygen, hydrogen, and nitrogen.
    (this multiple choice question has been scrambled)
  16. Which of the following is the major positive ion outside cells?

    A. magnesium
    B. potassium
    C. sodium
    D. hydrogen
    C. sodium
    (this multiple choice question has been scrambled)
  17. Which of the following is formed once the ions in the salt crystal have completely dissociated from one another?



    A. a colloid
    B. a buffer
    C. a suspension
    D. a solution
    D. a solution
    (this multiple choice question has been scrambled)
  18. Carbohydrates and proteins are built up from their basic building blocks by the ________.

    A. addition of a water molecule between each two units
    B. addition of a carbon atom between each two units
    C. removal of a water molecule between each two units
    D. removal of a carbon atom between each two units
    C. removal of a water molecule between each two units
    (this multiple choice question has been scrambled)
  19. What level of protein synthesis is represented by the coiling of the protein chain backbone into an alpha helix?

    A. quaternary structure
    B. secondary structure
    C. tertiary structure
    D. primary structure
    B. secondary structure
    (this multiple choice question has been scrambled)
  20. Carbohydrates are stored in the liver and muscles in the form of ________.

    A. triglycerides
    B. glycogen
    C. glucose
    D. cholesterol
    B. glycogen
    (this multiple choice question has been scrambled)
  21. The single most abundant protein in the body is ________.

    A. glucose
    B. hemoglobin
    C. collagen
    D. DNA
    C. collagen
    (this multiple choice question has been scrambled)
  22. Which of the following is not true of proteins?

    A. They have both functional and structural roles in the body..
    B. Their function depends on their three-dimensional shape.
    C. They appear to be the molecular carriers of coded hereditary information.
    D. They may be denatured or coagulated by heat or acidity.
    C. They appear to be the molecular carriers of coded hereditary information.
    (this multiple choice question has been scrambled)
  23. In general, the lipids that we refer to as oils have ________.

    A. a high degree of unsaturated bonds
    B. a high degree of saturated bonds
    C. long fatty acid chains
    D. a high water content
    A. a high degree of unsaturated bonds
    (this multiple choice question has been scrambled)
  24. The basic structural material of the body consists of ________.

    A. Carbohydrates
    B. Lipids
    C. Proteins
    D. Nucleic acids
    C. Proteins
    (this multiple choice question has been scrambled)

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