Imagine a cell with a semi-permeable membrane that is selective to k+ ions only. the internal solution contains 100 mm kcl and the external solution contains 1 mm kcl. what equation would you use to determine the potential (ek) developed across the membrane?

Which describes interactions between substances and stomata during photosynthesis? check all that apply. oxygen enters stomata. oxygen is released through stomata. carbon dioxide enters stomata. carbon dioxide is released through stomata. hydrogen enters stomata. hydrogen is released through stomata.

Select the correct answer. given: 2libr + ba → babr2 + 2li in this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced? a. 1.18 mol b. 2.37 mol c. 4.73 mol d. 16.4 mol e. 32.9 mol

All of the following are part of the biosphere except