Introduction to Enzymes Enzymes exist in both plant and animal cells. They aid in several reactions necessary for growth and survival in both plants and animals. Enzymes are known as biological catalysts. A catalyst is a substance that alters the rate of a chemical reaction without being chemically changed itself. They are referred to as…
Tag: Enzymes
Effect of Temperature on the Rate of Reaction
Effect of Temperature on the Rate of Reaction THE ABOVE GRAPH SHOWS THE EFFECT OF TEMPERATURE ON REACTION RATES At region A on the graph, the rate of reaction steadily increases. At region B on the graph, the temperature is too hot. The enzymes are denatured, slowing the rate of reaction (e.g. photosynthesis). The graph…
Effect of pH on Rate of Reaction
Effect of pH on Rate of Reaction Enzymes are pH sensitive. As a result they will have an optimal level, and changes from that optimal level will result in decreased performance. The optimum pH usually occurs at about 7 (neutral). If the optimum pH of an enzyme is about 2-3 (e.g. pepsin), then the peak…