Splicing. Eukaryotic genes are often interrupted by sequences that do not appear in the final RNA. The intervening sequences that are removed are called introns. The process by which introns are removed is referred to as splicing.The sequences remaining after the splicing are called exons. All of the different major types of RNA in a eukaryotic cell can have introns.plicing. Eukaryotic genes are often interrupted by sequences that do not appear in the final RNA. The intervening sequences that are removed are called introns. The process by which introns are removed is referred to as splicing.
Plain Air-Popped Popcorn Air-popped popcorn, on its own, doesn't contain many calories and is also low in fat and carbohydrates. A 3-cup serving of white, air-popped popcorn has 92 calories, 1 gram of fat and 1 milligram of sodium, according to the U.S. Department of Agriculture. The snack also has 2.9 grams of protein, 18.7 grams of carbs and 3.6 grams of dietary fiber.
Popcorn is a whole grain and a good source of fiber. It is high in carbohydrates and can raise your blood sugar, especially if you eat a lot in one sitting. On the other hand it is also low in calories, so you can consume a relatively large amount of plain popcorn without significantly affecting your total intake of calories. Carbohydrate Content A 2 1/2-cup serving of air-popped popcorn contains 70 calories and 16 grams of carbohydrates, including 3 grams of fiber.