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, including some transport processes. in animal cells, the main ion pump is the sodium-potassium pump.-outside cell b. ([na+]low, [k+]high) or ([na+]high,[k+]low)c. (excess + charge) or (excess - ) a. (3[na+]v,2[k+]^)，（2[na+]^,3[k+]v), (3[na+]^,2[k+]v)-inside cell d. ([na+]low,[k+]high) or ([na+]high,[k+]low)e. (excess + charge) or (excess - charge)

Chlorophyll is found in plant leaves and absorbs light from the sun to enable plants to perform photosynthesis. magnesium is an important component of chlorophyll. the concentration of magnesium ions is higher in the root-hair cells of plants than in the soil. which mechanism of ion uptake would best enable a plant to produce a steady supply of chlorophyll? osmosis diffusion passive transport active transport

Clues to ecological principles are given in numerous passages of the bible. a bible study of ecology actually opens the doors to better understanding of god's love and concern for the earth. use a concordance to locate bible passages associated with words concerning our stewardship of the earth. you may use a dictionary to find synonyms for these words: dominion replenish subdue judgment stewardship find each of the passages using these words related to principles of ecology. list all passages by quote, book, chapter, and verse under each word. use your own interpretation to rewrite what you think each verse is saying. after your discussion of each of these words, ask one other person to explain his understanding of the word and a related verse without any hints. summarize what he tells you. a concluding paragraph for each of the words should be written noting similarities and differences between your interpretation and that of each person consulted.

If animal agriculture was eliminated, how much grain would become available for human consumption?