Chapter 3 Flashcards
what is metabolism?
the chemical and physiological process in the body that provides energy for the maintenance of life.
what is the primary fuel source in the human diet?
carbohydrates
how many calories in one gram of carbohydrates?
there are four calories in every gram of crabohydrate.
what are three examples of simple carbohydrates?
fruits, syrups, honey, chocolate bar, etc.
what are three examples of complex carbohydrates?
potatoes, corn, rice, etc.
according to the institute o medicine what percentage of the human diet should consist of carbohydrates?
45% - 65%
what is the glycemic index?
a number (1-100) given to determine the rate at which the carbohydrate is broken down into glucose. the lower the number the longer it takes to break down, and the higher the number the faster.
how many calories are there in one gram of fat?
there are nine calories per gram of fat.
according to the institute of medicine what percentage of the human diet should consist of fat?
20% - 35% fat, with a balance of saturated, polyunsaturated, and monounsaturated fats.
(T/F) ? fat is the most concentrated source of energy in the diet.
true
what are the four types of fatty acids?
saturated, monosturated, polyunsaturated, and trans-fatty acids.
what are the two essential fatty acids?
linoleic and linolenic
what is cholesterol?
a lipid or fat-related substance necessary for good health. It is a normal component of most body tissues, especially those of the brain and nervous system, liver, and blood.
what is considered to be a healthy level cholesterol?
below 200 mg/dl
what is the total cholesterol ratio?
HDL + LDL / HDL = total cholesterol ratio