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.
Most respondents thought it was 50 or 60 calories; one respondent said 1000! Sugar is all natural and only has 15 calories per teaspoon. Sugar and all carbohydrates are 4 calories per gram, protein is also 4 calories per gram, where as, fats have 9 calories per gram. As you can see, sugar is not uniquely fattening.