Cellular respiration involves many chemical reactions. When a chemical process involves a series of reactions, scientists may summarize the process with a single chemical equation. This equation shows only the key reactants and products. For example, cellular respiration often uses a sugar called glucose and oxygen gas as key reactants. This process can be summarized by the following chemical equation: glucose + oxygen → carbon dioxide + water Glucose, like other sugar molecules, often serves as an energy source for cells. Cells release energy by breaking down glucose through chemical reactions with oxygen gas. This process produces carbon dioxide gas and water. Use the tiles to complete the sentence. carbon The key reactants of this process are and . Submit

some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.