The Mountain Gorilla (Gorilla beringei beringei) is very closely related to humans as we share a common ancestor and also many similarities in size too meaning a lot of our in-body systems are similar including the digestive system. For example, Mountain Gorilla’s diet consists almost entirely of plant-life and vegetation and according to many research studies and one big study carried out by Harvard,  this website clarifies that compared to a balanced diet, a primarily plant based diet, much like that of a gorillas, can prove significantly beneficial in terms of overall metabolism and reducing body fat especially visceral fat. This diet has proved to be fat burning even without substantial amount of exercise, however gorillas do perform a fair bit of exercise with the walking and climbing they do. Proving how a healthy, plant based diet can prove to be beneficial to the metabolism of the gorilla. Also, it has been discovered that metabolic rates in humans are very basal and we tend to use a lot of energy in what we do in every day life, whereas in similar animals, e.g. gorillas and apes and bonobos, their energy expenditure was significantly lower than ours meaning humans use up energy in an abnormally high manner compared to animals such as gorillas. Therefore, this means that a gorillas metabolic rate works at a more efficient way due to the fact their body uses less energy even due to the vast size difference between humans and gorillas, with gorillas being the largest of the apes. A lot of mammals do not have the ability to simply increase their energy output by eating more as for that to work they must also have the ability to being able to digest food quicker but it has been found out that humans and close relatives, including gorillas, have this method. Researchers compared the metabolic rates of humans and gorillas and it was discovered that the only animal that had higher energy budgets then what humans have are gorillas, but this could be due to the immense size of a gorilla compared to a human.
Eschirichia Coli (E. Coli) is a type of bacteria cell that lives primarily in the lower intestine of humans and helps maintain a healthy intestinal tract. Several strains of E. Coli exist but many of them are harmless, although the ones that aren’t can cause some types of respiratory illness and diarrhoea and even pneumonia but the strain of E. Coli that inhabits the lower intestine is hugely beneficial in keeping a healthy guy Microbiome. E. Coli can metabolise in 3 different ways whereas Gorillas can only metabolise one way. E. Coli can respirate aerobically, which means when oxygen is present, it grows, and this method which involves the oxidisation of glucose is by far the most efficient way to conduct metabolism and obtain energy. However, the thing that differs E. Coli’ metabolism compared to a mountain gorilla’s metabolism is that when oxygen is not present, E. Coli can anaerobically but only if there is a terminal electron acceptor like a nitrate ion for example. The third way E. Coli can metabolise is through fermentation although this is the least effective way but it only does this if there is no terminal electron accepter present.