The Chemical Basis of Life-Science Flashcards
why do all living things need water
because it is the universal solvent
what is polarity
uneven charge distribution on a compound
a solvent ______, a solute _________
dissolves something, gets dissolved
what is dissolving
when molecules get smaller, but bonds are not broken
what happens when ionic bonds are dissociated
they move away from each other and bonds remain
every single cell makes its own __________
energy
water is used to make ________
enzymes
what are ionic solutes
made of ions; charged atoms; one negative, one positive
an element is a ______ and is __________ throughout only one kind of matter present
pure substance, homogeneous
compounds are:
homogeneous, pure substance
two or more compounds that are physically put together, can be seperated
mixture
something dissolved in water is a _______
solution
different throughout, no specific ratio
heterogeneous
same throughout
homogeneous
what will a solute eventually do in a suspension
it will evenetually settle out of the solution
pieces that get stuck in proteins, helps to clot
platelets
a special solute in which the polarity has changed
colloid
contains hydrogen ions; has ph between 1-6.9; tastes sour
acid
what will a base always do
nuetralize an acid
amino acids, enzymes, cell structure, peptide bonds, cellular repair, genes, and muscular formation are all included in _______
proteins
if there is no nitrogen base between adedin and thymine and aytocin and guamine, they will not ______
attract
most reactions in our bodies are _________
exothermic
