2. which molecule most directly provides the muscle cells in an athlete with the energy
needed to run a race?
a. water
b. carbon dioxide
c. deoxyribonucleic acid
d. adenosine triphosphate

What characteristic makes a cell membrane selectively permeable

Color blindness is a recessive sex linked human trait. if a color blind father and a mother with normal color vision have a color blind son what must be the mothers genotype? a. xn yn b. xn xn c. xn y d. xn xn

Which of the following substances most likely dissolve in water? check all that apply