All cells contain ion pumps that use the energy of atp hydrolysis to pump ions across the plasma membrane. these pumps create an electrochemical gradient across the plasma membrane that is used to power other processes at the plasma membrane

Acar traveld with an average speed of 60 miles per hour for 2 hours. how far did it travel

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

Emmet didn’t want to weed the garden. he put off the task toward the end of the day. he even tried to get his sister to do the job. what type of goal orientation did emmet display toward weeding the garden?