Cooking treatments do not lead to variance in total protein and carbohydrate content. One tablespoon contains nearly 9 g carbohydrate (36 calories). Oxidation of one gram of carbohydrate yields approximately 4 kcal of energy. Felines are carnivores and have adapted to animal-based diets and low carbohydrate inclusion. Most are also found in small quantities in whole unprocessed carbohydrate based foods. Most of the carbohydrate content is sugar. The catabolic needs should be satisfied with carbohydrate and fat. Some of these terms, specially "carbohydrate" and "sugar", are also used with other meanings. An anomer is a type of geometric variation found at certain atoms in carbohydrate molecules. It takes into account only the available carbohydrate (total carbohydrate minus fiber) in a food. The phosphate serves as a link to another alcohol-usually ethanolamine, choline, serine, or a carbohydrate. Specialist microbes that break down mucin survive on their host's carbohydrate excretions. It is the most abundant carbohydrate in nature. The interaction of heat and carbohydrate is complex. He compared this effect to the way that various carbohydrate chains form.