AP Biology Flashcards

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