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| 4795468875 | evolution | the process of change that has transformed life on earth from its earliest beginnings to the diversity of organisms today | 0 | |
| 4795476628 | biology | scientific study of life | 1 | |
| 4795477219 | emergent properties | new properties that arise with each step upward in the hierarchy of life, owing to the arrangement and interactions of parts as complexity increases | 2 | |
| 4795483136 | eukaryotic cell | is subdivided by internal membranes into various membrane enclosed organelles | 3 | |
| 4795485647 | prokaryotic cell | the DNA is not separated from the rest of the cell | 4 | |
| 4795488167 | genes | the units of inheritance that transmit information from parents to offspring | 5 | |
| 4795491940 | genome | entire library of genetic instructions that an organism inherits | 6 | |
| 4795493903 | negative feedback | accumulation of an end product of a process that slows that process | 7 | |
| 4795496201 | positive feedback | an end product that speeds up its production | 8 | |
| 4795496917 | domain | a taxonomic category above the kingdom level | 9 | |
| 4795498531 | compound | a substance consisting of 2 or more different elements combined in a fixed ratio | 10 | |
| 4795500262 | isotopes | 1 of several atomic forms of an element each with the same number of protons but a different number of neutrons thus differing in atomic mass | 11 | |
| 4812858346 | covalent bond | the sharing of a pair of valence electrons by two atoms | 12 | |
| 4812860700 | valence | bonding capacity, usually equals the number of unpaired electrons | 13 | |
| 4812864409 | electro negativity | attraction of a particular kind of atom for the electrons of a covalent bond | 14 | |
| 4812867707 | non-polar | two atoms are equally electronegative, electrons are shared equally | 15 | |
| 4812871779 | polar | 1 atom is to a more electronegative atom, the electrons of that bond are not shared equally | 16 | |
| 4812876122 | ionic bond | the attraction between oppositely charged atoms, or ions | 17 | |
| 4812879023 | hydrogen bond | forms when a hydrogen atom covalently bonded to 1 electronegative atom is also attracted to another electronegative atom (weak chemical bond) | 18 | |
| 4812884255 | cohesion | binding of molecules by hydrogen bonds | 19 | |
| 4812887125 | adhesion | the clinging of one substance to another | 20 | |
| 4824665680 | solute | a substance that is dissolved | 21 | |
| 4824667593 | solvent | the dissolving agent of a solution | 22 | |
| 4824671906 | hydrophilic | any substance that has an affinity for water | 23 | |
| 4824679773 | hydrophobic | non ionic or non polar substances that repel water | 24 | |
| 4824682979 | buffers | substances that minimize changes in the concentrations of H+ and OH- in a solution | 25 |
