biology

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Author:
meg.davis
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284296
Filename:
biology
Updated:
2014-09-28 18:41:48
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williams
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biology
Description:
biology
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  1. which of the following statements is true about catalysts
    catalysts lower the activation energy of a chemical reaction
  2. the major atom involved in the formation of organic molecules is
    carbon
  3. the major function of this type of organic macromolecules is to store energy
    lipids
  4. which of the following makes up a molecule of water (H2O)
    two atoms of hydrogen and one atom of oxygen
  5. which of the following does not affect the function of enzymes
    rate of being used by chemical reactions
  6. which of the following is not a function of proteins
    store and transmit genetic information
  7. the energy needed to get a chemical reaction started is the
    activation energy
  8. which of the following is not a monomer
    protein
  9. water molecules are polar, with the
    oxygen side being slightly negative and the hydrogen side being slightly positive
  10. enzymes attach and bring together certain specific substances (reactants) at particular regions on the enzymes called
    active sites
  11. a type of bond that occurs due to the unequal sharing of electrons around atoms and which make certain regions of large organic macromolecules slightly positive or negative and create intermolecular attraction between certain regions of that macromolecule is called
    van der waals forces
  12. what sub-atomic particles are found in the orbit/cloud/shells that surround the nucleus of an atom
    electrons
  13. a protein that speeds up the rate of a chemical reaction is called
    an enzyme
  14. a macromolecule has the following atoms present: carbon, hydrogen and oxygen...what kind of macromolecule is it
    carbohydrate
  15. which of the following statements about enzymes is not true
    all catalysts are enzymes
  16. matter is defined as
    anything that has mass and takes up space
  17. the monomers of lipids are
    fatty acids
  18. a substance with a pH that is greater than 7.01 is called
    a base
  19. which of the following is a substance formed by the chemical joining of two or more elements in definite amounts
    compound
  20. the two general types of biochemical reactions are
    energy absorbing (endothermic) and energy releasing (exothermic)
  21. the major functions of this type of organic macromolecule is to store and transfer genetic material:
    DNA
  22. a solution that has a pH of 3 is how many more times acidic than a solution that has a pH of5
    2
  23. identify the reactants in the chemical reaction 
    --> Y + Z --> YZ
    Y and Z
  24. the major function of this type of organic macromolecule is to provide immediate energy to cells
    carbohydrates
  25. a macromolecule has the following atoms present: carbon, hydrogen, oxygen and nitrogen...what kind of macromolecule is it
    protein
  26. isotopes are atoms of the same element with the same number of
    protons/neutrons
  27. a unique property of water is that due to their polarity water molecules are attracted to other water molecules, this unique property is called
    cohesion
  28. if an atom has an atomic number of 6 and an atomic weight/mass of 14 and has a negative charge, how many protons, neutrons and electrons does it have, respectively
    6, 8 ,and 7
  29. when hydrogen and oxygen combine to form water, water is
    a product
  30. a covalent bond is formed as the result of
    sharing electrons
  31. if an atom contains 3 protons, 4 neutrons, and 3 electrons, its atomic mass (weight) is
    7
  32. the ability of water to absorb a large quantity of thermal energy is a unique property of water called
    heat capacity
  33. the smallest fundemental unit of matter is
    an atom
  34. if an atom contains 11 protons and 12 neutrons, its atomic number is
    11
  35. a map of eastern north america, showing the pH of rainfall in the various states, indicates that the pH of rain in New York varies from 4.22 to 4.40. according to these figures, the most acidic rainfall in New York Stare has a pH of
    4.22
  36. a solution that has a pH that is less than 7.00 is called
    an acid
  37. in a water molecule shared electrons spend more time around the oxygen atom than the hydrogen atoms. As a result, the hydrogen atoms is
    slightly positive
  38. the monomers involved in the structure of nucleic acids are called
    nucleotides
  39. a macromolecule has the following atoms present: carbon, hydrogen, oxygen, nitrogen and phosphorus...what kind of macromolecule is it
    nucleic acid
  40. pH specifically measures for this particular ion
    H+
  41. an ionic bond is formed as the result of
    transferring electrons
  42. RNA and DNA are types of these kinds of macromolecules
    nucleic acids
  43. when salt is dissolved in water, water is the
    solvent
  44. ions are
    any charged atom

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