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.
Fat intake has a bigger impact on calorie counting than other nutrients. One gram of fat has 9 calories, compared with only 4 calories per gram in carbohydrates and proteins. For healthy adult men and women, 20 to 35 percent of total daily calories should be from fat. The best way to stay on track when you're counting calories or fat is by keeping a daily journal.