5) chemical reactions in a living system function to
a) only transfer energy from one molecule to another.
b) create new energy.
c) only use energy stored in a molecule.
d) transfer energy from one molecule to another or use energy stored in a molecule.
6) the relaxation of skeletal muscle relies on the activity of the ________, which
decreases cytoplasmic calcium concentration.
a) ryanodine receptor
b) dihydropyridine (dhp) receptor (l-type calcium channel)
c) acetylcholine receptor
d) ca2+ atpase
7) match the glial cell to the nervous system division in which it is found.
a. central nervous system
b. peripheral nervous system
satellite cells
8) the alpha-helix and pleated sheet are examples of the ________ structure of a
protein.
a) primary
b) secondary
c) tertiary
d) quaternary
e) pentanary
9) dalton’s law states that
a) gas volume and temperature are directly proportional.
b) gas volume and pressure are inversely proportional.
c) the volume of gas that will dissolve in a solvent is proportional to the solubility of the
gas and the gas pressure.