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.
With little effort I can find evidence in obesity journals that fat has anywhere between 8.7 (Ref 2) and 9.5 (Ref 3) calories per gram. The same obesity journal that says that human fat tissue can be 87% lipid also says that it may be 72% lipid (Ref 4).