NUTRITION Flashcards
is the sum of all the interactions between an organism and the food it consumes.
Nutrition
are organic and inorganic substances found in foods that are required for body functioning.
nutrition
What are the three major functions of nutrients
providing energy
providing structural material for body tissues
regulating body processes
What are the three essential nutrients
water
macronutrients
micronutrients
Body’s most basic nutrient need
water
Needed in large amounts (e.g., hundreds of grams) to provide energy. (e.g. carbohydrates, fats, protein, minerals, vitamins, and water)
macronutrients
Vitamins and minerals that are required in small amounts (e.g., milligrams or micrograms) to metabolise the energy-providing
nutrients.
micronutrients
composed of the elements carbon (C), hydrogen (H), and oxygen (O) and are of two basic types: simple carbohydrates (sugars) and complex carbohydrates (starches and fiber).
carbohydrates
Types of carbohydrates
sugars
starches
fiber
simplest of all carbohydrates, water soluble and are produced naturally by both plants and animals.
sugars
insoluble, nonsweet forms of carbohydrate. Nearly all starches exist naturally in plants, such as grains, legumes, and potatoes.
starches
a complex carbohydrate derived from plants, supplies roughage, or bulk, to the diet. This cannot be digested by humans.
fibers
The desired end products of carbohydrate digestion. absorbed by the small intestine in healthy people.
monosaccharides
Major source of body energy. After the body breaks carbohydrates down into glucose, some glucose continues to circulate in the blood to maintain blood levels and to provide a readily available source of energy. The remainder is used as energy or stored.
carbohydrate metabolism
amino acids, organic molecules made up primarily of carbon, hydrogen, oxygen, and nitrogen, combine to form proteins
proteins