Technically both. It has whole grain products in it that make it a complex, but the sugar and other ingredients (depending on which kind of bar you buy) are simple carbs. Overall they are a pretty healthy snack. I recommend the Kashi brand, its good in taste and better for you then some of the other brands.
An apple is composed largely of frutose, a simple carbohydrate, though the term "simple" and "complex" is on the way out, in favor of the glycemic index. The issue with simple and complex carbohydrate designations is that they aren't necessarily physiologically relevant- a short, "simple" carbohydrate from an apple may actually be digested slower than a "complex" long starch from a potato. The downside of the glycemic index is that it requires foods to be tested in humans to actually know the effect. Making a change to the food's texture or cooking it can greatly affect the rate at which it is digested- even if the nutritional content, fiber, etc. remains unchanged. For instance, 100% whole grain oat flour has a much higher glycemic index than 100% whole grain steel cut oats. Furthermore, combining protein or fats with a high glycemic product can reduce the glycemic load, making it difficult for an individual to predict the glycemic effect of a meal.
There is no such thing as a simple complex carbohydrate. Carbohydrates are either simple or complex; they cannot be both.
Eggs would be a complex carbohydrate.
Monosaccharide is a simple carbohydrate.
complex
complex
Glucose is a complex carbohydrate.
Starch is not a simple carbohydrate, it is a complex carbohydrate. Starch is found in potatoes, rice, wheat, bread, pasta and nuts.
Sugar by itself is a simple carbohydrate , but when it is in foods like potatoes that are carbs but turn into sugar in your body it is a complex carb.
Beer is a drink containing alcohol and not a carbohydrate.
Grapes contain primarily simple carbohydrates in the form of natural sugars like glucose and fructose. They also have small amounts of more complex carbohydrates like fiber, but overall they are considered a simple carbohydrate due to their high sugar content.
Yes, spaghetti is pasta and pasta is a carb.
Yes, oatmeal is a complex carbohydrate. It is typically used by athletes of all kinds for a great source of slow burning carbohydrates. However, this applies to oatmeal that is sugar free, being that sugar is a simple carbohydrate, oatmeal with sugar is both a simple and complex carbohydrate. Hope this helps :)