Essential+Nutrients

====**Carbohydrates** are major source of energy. Carbohydrates are into two groups, simple carbohydrates which are simple sugars (such as Glucose which is the major sources of energy for the body) and complex carbohydrates (such as Starch which needs to be broken down to small sugar molecules, and Fibers). ==== ====**Fats** are high energy nutrients (contain twice as much energy as carbohydrates). Fats are classified to either Unsaturated fats (liquid at room tmp. ) and Saturated fats (usually solid at room tmp.). Small amount of Fats are needed in a person's diet. ==== ====**Proteins** are nutrients which are less important source of energy. They are made up of amino acids. They are needed for tissue growth and repair. They also play a part in chemical reactions within cells. ====

__Questions: __
Kawssar: Dietary Fiber is the indigestible portion of plant foods having two main components: soluble (prebiotic, viscous) and insoluble fiber that is metabolically inert.There are many food sources of fiber such as legumes, oat, barely,brocolli, carrots,nuts. __** Samia El Kurdi: **__ A Fiber  is the parts of grains, fruits, and vegetables that contain cellulose and are not digested by the body. Fiber helps the intestines absorb water, which increases the bulk of the stool and causes it to move more quickly through the colon.Some food sources of fiber are breads, cereals, whole-grain pastas, brown rice, nuts, seeds, dried peas, beans, and lentils.
 * 1) ====What is a Fiber? Name some food sources of a fiber? ====

2-List 5 sources of food rich in each of Carbohydrates, Fats and Proteins. Kawssar: - carbohydrates: potato, corn, pasta, candies, bread -proteins: beans, lentils, beef, eggs, fish, lamb -fats: oil, butter, nuts, avocado, cakes. __** Samia El Kurdi: **__ The 5 sources of food rich in Carbohydrates are  baked potato, grape- nuts, spaghetti, bagel, and cream of wheat. The 5 sources of food rich in Fats are butter, biscuits, fried chicken, oil, and cakes. The 5 sources of food rich in Proteins are lentils, <span style="font-family: 'Times New Roman','serif'; font-size: 16px;"> peanut butter, beef, eggs, and fish. for Q1: **Hawraa:** a fiber is a class of materials that are continuous filaments or are in discrete elongated pieces, similar to lengths of thread.

They are very important in the biology of both plants and animals, for holding tissues together. There are many food sources of fiber such as legumes, oat, barely,brocolli, carrots,nuts and wheat ... etc.

for Q2 **Hawraa**: carbohydrates: chocolate, milk, pizza, corn, potato. proteins: diary, eggs, beans ,beef,soy fats: cookies, cakes, milkshakes, butter, oil.

__References:__ Nemours. (n.d.). Your Digestive System. Kids health. Retrieved June 2, 2011, from http://kidshealth.org/kid/htbw/digestive_system.html

Nutrition. Retrieved June, 2011, from http://www.sweetadditions.net/wp-content/uploads/2009/12/nutrition.jpg