What is the ph of a solution with a [h+] of 10^-8

What is the role of the phospholipid belayer in cellular transport in living cells

Grasses--> mice--> cats--> coyotes suppose 10,000 units of energy are available at the level of the grasses. what is the total number of energy units lost by the time energy reaches the coyote?

Which of the following requires the use of energy and the of transport proteins to move a molecule across a cell membrane?