Characteristics of life , Water cycle, Biotic and Abiotic factors, Food chain , levels of organization.
<span>C. Theyvare always multicellular </span>
Molecule is formed when atoms combine by covalent bonding. The molecule may be polar or non polar.
ATP is like a charged battery, while ADP is like a dead battery. ATP can be hydrolyzed to ADP and Pi by the addition of water, releasing energy. ADP can be "recharged" to form ATP by the addition of energy, combining with Pi in a process that releases a molecule of water.