nuclease - general term for enzymes that catalyze the hydrolysis of nucleic acid by cleaving chains of nucleotides into smaller units. 1  endonuclease - a nuclease that cleaves nucleic acids at interior bonds and so produces fragments of various sizes. exonuclease - a nuclease that releases one nucleotide at a time (serially) beginning at one of a nucleic acid. enzyme - any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions.
1 gram of fat = 9 calories. Each gram of fat contains 9 calories. In general carbs are 4 cal per gram, as is protein and fat is 9 cal per gram. 16 people found this useful.
But if what you really want to ask is how many calories in one gram of carbohydrate, the answer is four. Four calories also in one gram of protein and nine calories in a gram of fat.Gram is a measurement of weight. Carbohydrate is a molecule, a food.ut if what you really want to ask is how many calories in one gram of carbohydrate, the answer is four. Four calories also in one gram of protein and nine calories in a gram of fat.