Anatomy Ch 2.txt

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Anatomy Ch 2.txt
2015-06-03 03:52:15


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  1. matter vs energy
    matter is the stuff in the universe occupying space, and has mass--energy puts matter into motion and has no mass or space
  2. kinetic energy
    when energy is doing work /moving objects
  3. potential energy
    inactive or stored energy
  4. chemical energy in the human body (how is it used?)
    stored in bonds of chemical substances, bonds broken, potential energy is released and becomes kinetic
  5. electrical energy in the human body (how is it used?)
    movement of charged particles, when changed particles move across all membranes 
  6. mechanical energy in the human body (how is it used?)
    energy directly involved with moving matter-(ex. moving legs)
  7. radiant energy in the human body (how is it used?)
    travels in waves,(ex. electromagnetic spectrum)
  8. Protons 
    p+    protons have a positive charge
  9. neutrons
    n0   neutrons have a neutral charge
  10. electrons
    e-   electrons have a negative charge
  11. the number of protons and electrons is always?
    A)more protons than electrons
    C)more electrons than protons
    (this multiple choice question has been scrambled)
  12. atomic number
    the number of protons
  13. atomic mass 
    • the sum of protons and neutrons so
    • (ex. He=2+2=4)
  14. Isotopes
    same number of protons and electrons but a different number of neutrons
  15. Radioisotopes
    heavier isotopes of certain atoms are unstable and tend to decompose to become more stable
  16. ionic
    electrons transfered from one atom to the other COMPLETELY
  17. covalent
    share electrons
  18. hydrogen bonds
  19. synthesis reaction
    A  +  B  --> AB
  20. decomposition reactions
    AB ---> A  +  B
  21. exchange reactions
    • AB+C  ----> AC+B     or
    • AB+CD  -->  DB + CA
  22. Inorganic Compounds water
    absorbs and releases alot of heat before temp. changes, polar, chemical reactivity digests and breaks down foods, coushioning cerebiospinal fluid
  23. Inorganic compounds Salts
    electrolytes substances that conduct an electrical current in a solution 
  24. ph scale
    • acidic  ----------------basic
    •    0  --------------------14
  25. monosacharides
    one sugar , glucose, fructose, deoxyribose, galactose
  26. disaccarides
    2 simple sugars sucrose lactose maltose
  27. polysacharides
    large insoluable many sugar, starch glycogen
  28. lipids
    most abundant in body   steroids phospholipids and triglycerides
  29. catalyst
    increases the rate of reaction w/o becomng part of the product or being changed itself