In corn, purple kernels are dominant to yellow. a random sample off 100 kernels is taken from a population in hardy-weinberg equilibrium. it is found that 9 kernels are yellow and 91 kernels are purple. what is the frequency of yellow allele in this population?

Mitochondria produce atp, a high energy compound. atp is used for all sorts of enzyme-mediated reactions, such as making proteins/nucleotides/etc, certain compounds cross the cell membrane, muscles move, etc.  without this source of energy, a cell will die. it will not be able to repair itself, defend against pathogens, etc.

As what he you go get the hot dog ; )