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ch2 drjolley

Chapter 2

proton positive charge
neutron neutral charge
electron negative charge
layers different energy levels
charge is like a magnet positive and negative
atomic number number of protons
atomic weight average mass of protons plus neutrons
element substances made up of one type of atom
molecule two or more atoms bonded together
types of bonds ionic bonds, covalent bonds
ionic bonds electron moves from one atom to another giving each a charge
covalent bonds sharing of electrons
disulfide bonds covalent bond between 2 sulfur atoms
hydrogen bonds similar to ionic bond attraction of charged particles
chemical reactions change brought about by creating or breaking chemical bonds...
2 main types synthesis and decompostion
synthesis bonds formed to make a new compound
decomposition bonds are broken to form 2 or more smaller molecules
water 60-70% of the body
Solvent solutes dissociate in water
lubricant reduce friction in GI tract and joints
High specific heat requires alot of energy to raise temerature
high heat of vaporization absorbs body heat to cool the body when sweating
compartments water is given a different name depending location in body
intercellular fluid water within cells
extracellular fluid water outside of cells
plasma water in blood
lymph system water in lymph system
interstitial fluid water found between cells
specialized fluids synovial fluid, csf, aqueous humor, and others
Oxygen o2 molecules in form of a gas
important in cellulat respiration process of breaking down food to get energy
carbon dioxide co2 molecule in form of a gas
trace elements necessary substances needed in very small amounts
Acids a substance that increases the concentration of H+ ions in water
base a substance that decreases the concentration of H+ ions in water
body Ph ICF 6.8 blood 7.35-7.45
buffer system chemical or pair of chemical that minimize change in PH
organic compounds contain carbon and hydrogen
4 major groups carbohydrates, lipids, proteins, nucleic acids
carbohydrates energy source
deoxyribose petose sugar, part of DNA
ribose part of RNA
disaccharides double sugar carbohydrates
oligsaccharides 3-20 sugars
polysaccharides thousands of glucose molecules
starches glucose storage in plants
gylcogen the form of glucose storage in liver
cellulose chain of glucose in plant cell walls
lipids fat
3 types of fats true fats, phospholpids, steroids
true fats glycerol
saturated fat all carbons bonded to the maximum number of hydrogens
unsaturated fats one or more carbons are double bonded
phospholipids diglycerides with a phosphate group bonding site
steriods estrogen,progesterone, testosterone, cholesterol
proteins made up of amino acids
enzymes protiens
nucleic acids DNA and RNA
ATP adenosine Tri Phosphate
Sugar for RNA ribose
bases for RNA adenine
Sugar for DNA deoxyribose
bases for DNA adenine, thymine, guanine, cytosine
basic from of energy atp
H hydrogen
C carbon
n nitrogen
O oxygen
F Fluorine
Na sodium
Mg magnesium
p phosphorus
S sulfur
Ci cholrine
k potassium
Ca calcuim
Mn manganese
Fe iron
Co cobalt
Cu copper
Zn zinc
I iodine
Created by: Brandypeters



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