Ch. 2 Chemical Basis of Life Metabolism and Molecules

  1. Catabolism




    ones
    E. Key reaction during anabolism
    A. Breaks down larger food molecules into smaller unit
  2. Anabolism




    ones
    E. Key reaction during anabolism
    A. Joins simple molecules together to form more complex ones
  3. ATP




    ones
    E. Key reaction during anabolism
    A. The form of energy that cells generally use
  4. Metabolism




    ones
    E. Key reaction during anabolism
    B. All the chemical reactions that occur in body cells
  5. Dehydration Synthesis
    A. Breaks down larger food molecules into smaller units
    B. The form of energy that cells generally use
    C. All the chemical reactions that occur in body cells
    D. Joins simple molecules together to form more complex
    ones
    E. Key reaction during anabolism
    E. Key reaction during anabolism
  6. Water plays a key role in such processes as:
    A. Cell permeability C. Secretion
    B. Active transport of materials D. All of the above
    D. All of the above
  7. Which of the following is NOT a property of water?
    A. Strong polarity C. High heat of vaporization
    B. High specific heat D. Strong acidity
    D. Strong acidity
  8. Acids:



    B. Release hydrogen ions when in an aqueous solution
  9. Substances that accept hydrogen ions are referred to as:
    A. Acids C. Buffers
    B. Bases D. Salts
    B. Bases
  10. The constancy of the pH homeostatic mechanism is caused by the presence of substances
    called:
    A. Salts C. Buffers
    B. Bases D. Acids
    C. Buffers
  11. True or False
    The pH scale indicates the degree of acidity or alkalinity of a solution
    True
  12. True or False
    Milk is acid on the pH scale
    True
  13. True or False
    Litmus will turn red in the presences of an acid.
    True
  14. True or False
    The basic substance of each cell is water
    True
  15. True or False
    Oxygen and carbon dioxide are examples of organic compounds.
    False
  16. Which of the following in NOT a type of carbohydrate?
    A. Monosaccharides C. Megasaccharides
    B. Disaccharides D. Polysaccharides
    C. Megasaccharides
  17. Which of the following is INCORRECT in reference to carbohydrates?



    C. They are replete with nitrogen atoms
  18. Proteins are composed of ______ commonly occurring amino acids.
    A. 8 C. 20
    B. 12 D. 24
    C. 20
  19. Amino acids frequently become joined by:
    A. Peptide bonds C. Degradation synthesis
    B. Phospholipid reactions D. None of the above
    A. Peptide bonds
  20. Which of the following is NOT an example of proteins?
    A. Hormones C. Urine
    B. Antibodies D. Enzymes
    C. Urine
  21. A structural lipid found in a cell membrane is:
    A. Triglyceride C. Steroid
    B. Phospholipids D. Prostaglandin
    B. Phospholipids
  22. Which of the following is the correct example of DNA base pairing?
    A. Adenine-Cytosine C. Adenine-Thymine
    B. Guanine- Adenine D. Guanine- Thymine
    C. Adenine-Thymine
  23. A DNA molecule contains each of the following EXCEPT:
    A. Sugar C. Phosphate
    B. Nitrogenous base D. Lipid
    D. Lipid
  24. DNA differs from RNA in that:



    C. RNA contains ribose instead of deoxyribose
  25. True or False
    Steroids are poorly distributed throughout the body.
    False
  26. True or False
    High-density lipoprotein (HDL) is also called the “good” cholesterol.
    True
  27. True or False
    Protein compounds have no role in defending the body against harmful agents.
    False
  28. True or False
    The nonessential amino acids can be produced from the other amino acids or from
    simple organic molecules.
    True
  29. True or False
    Enzymes are proteins that function by the “lock and key” model.
    True
  30. True or False
    Prostaglandins are “tissue hormones
    True
  31. Atoms of the same element but with different atomic weights
    (because their nuclei contain different numbers of neutrons).








    G. Isotopes
  32. Adenine-thymine and guanine-cytosine are examples of ___
    present in DNA.








    A. Base pairs
  33. Atoms with fewer than eight electrons in their valence shell will
    attempt to lose, gain, or share electrons with other atoms to achieve
    stability








    I. Octet rule
  34. The number of protons in an atom’s nucleus.








    I. Atomic number
  35. Any large molecule made up of many identical small molecules








    C. Polymers
  36. Components of DNA and RNA that are composed of sugar, a
    nitrogenous base, and a phosphate group.








    D. Nucleotide
  37. Chemical property that allows water to act as a effective solvent.








    F. Polarity
  38. Large group of inorganic compounds including acids, bases, and
    salts.








    E. Electrolyte
  39. Ribose


    C. Carbohydrate
  40. Steroids


    B. Lipid
  41. Amino Acid


    A. Protein
  42. Glycerol


    B. Lipid
  43. Monosaccharides


    C. Carbohydrate
  44. Phospholipids


    B. Lipid
  45. Enzymes


    A. Protein
  46. Litmus turns blue
    A. Acid
    B. Base
    B. Base
  47. "Proton donor"
    A. Acid
    B. Base
    A. Acid
  48. Bitter Taste
    A. Acid
    B. Base
    B. Base
  49. "Proton acceptor"
    A. Acid
    B. Base
    B. Base
  50. Releases a hyrdrogen ion
    A. Acid
    B. Base
    A. Acid
Author
dezkwondo
ID
29241
Card Set
Ch. 2 Chemical Basis of Life Metabolism and Molecules
Description
Metabolisma and Molecules
Updated