Which of the following can combine in a cell to convert a lower-energy molecule into a higher-energy molecule?

a.) adp + p + energy
b.) atp + p + energy
c.) adp + p
d.) atp + p

Write a paragraph that provides examples of each stage of volcanic activity, a description of the volcano, and facts about each stage.

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .

What occurs when a cell engulfs large food particals