Carbohydrates are the body's primary source of energy. They are broken down into glucose, which is then used by cells for energy.

Bread is a good source of carbohydrates because it is made from wheat flour, which is a complex carbohydrate.

Simple carbohydrates are broken down more quickly than complex carbohydrates because they have a simpler structure. This means that they can be absorbed into the bloodstream more quickly and provide a faster source of energy.

Glucose is a simple carbohydrate because it is a monosaccharide, which means that it cannot be broken down into smaller molecules. Fructose and sucrose are also simple carbohydrates, but they are disaccharides, which means that they can be broken down into two monosaccharides.

Starch, cellulose, and glycogen are all complex carbohydrates because they are polysaccharides, which means that they are made up of many monosaccharides linked together. Starch is a storage form of carbohydrates in plants, cellulose is a structural component of plant cell walls, and glycogen is a storage form of carbohydrates in animals.

The recommended daily intake of carbohydrates for adults is 45-65% of total calories. This means that if you consume 2,000 calories per day, you should consume 900-1,300 calories from carbohydrates.

Carbohydrates play a vital role in sports performance by providing energy for muscles, helping muscles recover from exercise, and regulating blood sugar levels.

The best time to consume carbohydrates before exercise is 1-2 hours before exercise. This gives your body time to digest and absorb the carbohydrates and convert them into glucose, which can then be used for energy during exercise.

The best type of carbohydrate to consume during exercise is a combination of simple and complex carbohydrates. Simple carbohydrates provide a quick source of energy, while complex carbohydrates provide a sustained source of energy.

The recommended carbohydrate intake during exercise is 60-90 grams per hour. This amount of carbohydrate can help to maintain blood sugar levels and provide energy for muscles.

The role of carbohydrates in weight loss depends on the type of carbohydrate. Simple carbohydrates can contribute to weight gain if they are consumed in excess, while complex carbohydrates can help to promote weight loss by providing a feeling of fullness and helping to regulate blood sugar levels.

Brown rice is a good source of complex carbohydrates because it is made from whole grains, which contain more fiber and nutrients than refined grains.

Net carbohydrates are the total carbohydrates minus the fiber. Fiber is a type of carbohydrate that cannot be digested by the body, so it does not provide any calories or energy.

The glycemic index is a measure of how quickly a food raises blood sugar levels. Foods with a high glycemic index cause blood sugar levels to rise quickly, while foods with a low glycemic index cause blood sugar levels to rise slowly.

White bread has a high glycemic index because it is made from refined flour, which is quickly digested and absorbed into the bloodstream. This causes blood sugar levels to rise quickly.