Many catabolic and anabolic reactions are based on reactions that are similar but work in opposite directions, such as the hydrolysis and condensation reactions described in Figure 3–39. This is true for fatty acid breakdown and fatty acid synthesis. From what you know about the mechanism of fatty acid breakdown outlined in Figure 13–11, would you expect the fatty acids found in cells to most commonly have an even or an odd number of carbon atoms?

Figure 13–39

Figure 13–11

Transcribed Image Text:

A -OH + H-B H₂O CONDENSATION energetically unfavorable A-B H₂O HYDROLYSIS energetically favorable A-OH + H-B