According to the material, pH influences which of the following aspects of bread making?

• A. All of these are influenced by pH
• B. Yeast activity
• C. Enzyme function
• D. Gluten behavior

Answer: (D)

The main idea is that pH directly alters how the gluten network forms and behaves in dough. Gluten proteins—glutenin and gliadin—interact to create a viscoelastic matrix that traps gas and gives bread its structure. Changes in acidity change the charges on these proteins, which affects their bonding and how tightly or loosely they network together. In more acidic dough, the gluten network can tighten and become stronger, improving gas retention and crumb structure; in more alkaline conditions, the network can weaken, making dough more extensible but less able to hold gas. This direct impact on the gluten structure is the most noticeable way pH influences bread, which is why gluten behavior is the best fit. Yeast activity and enzyme function do depend on pH too, but the material emphasizes the gluten network as the pH-influenced aspect here.