Facts About Black Snakes. 1  Diet: Black snakes mostly eat rodents, lizards, birds, and bird eggs. Rat snakes are constrictors while black racers generally arenât. 2  Smell: Rat snakes emit a musky smell when threatened. 3  Habitat: Black snakes live in grasses, forests, marshes, and buildings.
The folds in the inner membrane of the mitochondria are called cristae. They serve to provide a greater surface area for the proton-pump through which protons pass down their â¦ concentration gradient through ATP synthase to produce ATP in cellular respiration.1 person found this useful.he folds in the inner membrane of the mitochondria are called cristae. They serve to provide a greater surface area for the proton-pump through which protons pass down their â¦ concentration gradient through ATP synthase to produce ATP in cellular respiration. 1 person found this useful.
In Human Anatomy and Physiology.   In the stomach, the folds (rugae) are there so that the stomach can expand under the influence of parasympathetic stimulation and stretching by the ingestion of food.