CHAPTER 1 Flashcards
When the body requires a nutrient for growth or maintenance but lacks the ability to manufacture amounts sufficient to meet the body’s needs, the nutrient is _______
essential
Other nutrients that the body can make are called ______
nonessential
Known Essential Nutrients
Carbohydrates Lipids (fats) Protein Vitamins Minerals Water
For Providing Energy
Carbohydrates, proteins, and lipids provide energy.
______ and _______ have indirect roles as catalysts for the body’s use of energy nutrients
Vitamins and mineral
Regulating body processes:
Proteins, lipids, vitamins, minerals and water are required
Each _____ serves as a specific function related to regulation
vitamin
Aiding growth and repair of body tissues
Proteins, lipids, minerals and water are essential for growth and repair
Carbohydrates, proteins and lipids contain energy because they are ______
organic
Being organic means they are composed of a structure that consists of ______, _______, and ________
hydrogen
oxygen
carbon
The _________ structure identifies these nutrients as being organic
carbon-containing
When these energy-containing nutrients are oxidized (burned in the body), energy is _____ and ____ for use by the cells
released
available
Although ______ are also organic, they do not provide energy for the human body.
vitamins
The energy released from food is measured in ______
kilocalories(thousands of calories) or calories
Technically, a ______ is the amount of heat necessary to raise a temperature of a gram of water by 1 degree celsius ( 0.8 Fahrenheit )
calorie
Carbohydrates and proteins each provide ____
4 kcal per gram
Lipids contain
kcal per gram
______ content of a specific food is based on the amount of carbohydrate, lipid, and protein energy contained in the food
kcal
Another energy-yielding substance is ______. Provides ___
alcohol
7 kcal per gram
Moderate consumption of alcohol, however, may be protective for ______
heart disease
The beneficial components of alcohol-containing beverages such as red wine are _______ - nonnutritive plant substances found in the ingredients (red grape) used to produce the alcoholic beverages.
phytochemicals
one serving of alcohol equals ______ of beer, ____ of wine, or ______ of 80-proof spirits.
12 ounces
5 ounces
1.5 ounces
Are major source of fuel
Carbohydrates
Carbohydrates consist of simple carbohydrates, often called _____, and complex carbohydrates, which include ____ and most ____
sugars
starch
fiber
Are found in fruits. milk and all sweeteners, including white and brown sugar. honey, and high-fructose corn syrup.
Simple sugars
Are found in cereals, grains, pastas, fruits, and vegetables
Complex carbohydrates
All, except fiber, are broken down to units of _____, which is one of the simple carbohydrates
glucose
_____ provides the most efficient form of energy for the body particularly for muscles and the brain.
Glucose
Most ____ cannot be broken down by the human digestive system, therefore, it provides a little, if any, energy.
fiber
______ has several beneficial effects on the digestive and absorptive systems of the body
Dietary fiber
The digestive and absorptive beneficial effects of Dietary fiber effects range from preventing ____ to possibly reducing the risk _____ and _____
constipation
colon cancer and heart disease.
Some of the functions are roles in the structure of bones, muscles, enzymes, hormones, blood, the immune system, and cell membranes
proteins
The linking of ____ in various combinations forms proteins
amino acids
_______ are required to create all the necessary proteins to maintain life
twenty amino acids
Some amino acids are formed by the body, whereas others, called ____, must be consumed in foods
essential amino acids
The ____ essential amino acids are found in ___ and ___ sources
nine
animal and plant
Animal sources include ___,___,___ and some ____ such as ___, and ____
meat. fish, poultry, dairy products such as milk and cheeses.
Plant sources include ___, ___ ( ___ and ____) ____, ____ and _____(albeit)
grains, legumes (peas and beans that contain protein), seeds, nuts, many vegetables
Excess protein is broken down to amino acids. The amino acids are then used for ___ or broken down further in ____ and are either stored as ____ or excreted through the _____ in urine
energy
metabolic processes
body fat
kidneys
Are the densest form of energy available in foods and as stored energy in our bodies
Lipids (Fats)
Fats or lipids, serve other purposes, such as __________, _________, and _______
- having a role in the production of hormones
- functioning as components of all cell structures
- providing padding to protect body organs
______ and the _______, ___, __, __ and __ are found in food lipids. It is the fats in certain foods that make them taste so appealing.
Essential fatty acids and fat-soluble vitamins, A, D, E and K
Lipids are divided into three categories: ______, _____ and ____
triglycerides, phospholipids and sterols
Triglycerides are called ____, _____ or _____ according to the types of fatty acids they contain.
saturated
monosaturated
polyunsaturated fats
______ are carbon chains of varying lengths and degrees of hydrogen saturation.
Fatty acids
The most common phospholipid is ____, among sterols, we hear most about ______
lecithin
cholesterol
Saturated fats or triglycerides found in some fat-containing foods, trans fats from processed fats, and dietary cholesterol are associated with increased ______
blood lipid levels
Elevations of blood lipids, whether formed by our bodies or consumed in dietary sources, make up a risk factor for the development of ______
coronary artery disease
Saturated fats, and to a certain extent polyunsaturated fats, also have been associated with increased risk for certain _____
cancers
Are compounds that indirectly assist other nutrients through the complete processes of digestion, absorption, metabolism and excretion.
Vitamins
____ are needed by the body, and each has a specific function.
Thirteen vitamins
Vitamins provide no energy but assist in the release of ______
energy from carbohydrates, lipids, and proteins.
Vitamins are divided into two classes on the basis of their _____
solubility
The _____ include the B vitamins (thiamin, niacin, riboflavin, folate, cobalamin (B12), pyridoxine (B6), pantothenic acid, and biotin) and Vitamin C.
water-soluble vitamins
The ____ are vitamins A, D, E and K
fat-soluble
Serve structural purposes (e.g. bones and teeth) in the body and are found in body fluids.
Minerals
Minerals in body fluids affects the nature of the fluids, which in turn influences ______ and ______
muscle function
central nervous system
The _______ essential minerals are divided into two categories: ____ and _____
major and trace minerals
The division of minerals are based on the _____ required by the body, all are equally important.
quantity of minerals
Minerals are plentiful in ___, ___, ____, ______, ___ and _____
fruits, vegetables, dairy products, meat and legumes
Although minerals are indestructible, some may be lost through ______
food processing
When whole-wheat flour is processed or refined to white flour, minerals such as ____ and ____ are lost and not replaced
phosphorus and potassium
functions as a fluid in which substances can be broken down and reformed for use by the body
water
As a constituent of blood, water also provides a means of transportation for ____ to and from cells.
nutrients
Provide abridge between knowledge of essential nutrients and food consumption. They also provide a guide to adequate nutrient intake levels against which to compare the nutrient values of foods consumed
Dietary standards
Combines the classic concerns of deficiency diseases that were the original focus of nutrient recommendations with the contemporary interest of reducing the risk of chronic diet-related diseases such as coronary artery disease, cancer and osteoporosis. Take into account the availability of nutrients, food components and use of dietary supplements. They are designed to apply to various individuals and population groups
Dietary Reference Intakes (DRIs)
Assigns value to a food on the basis of comparison of its nutrient content with the kcal the food contains
nutrient density
The more nutrient content with the kcal a food provides, the _____ its nutrient density
higher
DRI are based on
(1) reviewing the available scientific data about specific nutrient use
(2) assessing the function of these nutrients to reduce the risk of chronic and other diseases and conditions such as coronary artery disease and cancer
(3) evaluating current data on nutrient consumption levels among U.S and Canadian populations
Is the amount of a nutrient needed to meet the basic requirements of half the individuals in a specific group that represents the needs of a population
Estimated average Requirement (EAR)
The EAR considers issues of _____and ______
deficiency
physiologic functions
Public health nutrition researchers and policymakers primarily use the ____ to determine the basis for setting the RDAs
EARs
The _____ is the level of nutrient intake sufficient to meet the needs of almost all healthy individuals of a life-stage and gender group.
recommended dietary allowance (RDA)