unit 1 Flashcards
what are nutrients ?
a substance that provides nourishment essential for growth and the maintenance for life
our body consist of :
60% fluid
20% fat
20% proteins , carbohydrates and major monerals
the human body is:
a collection of well-organize atoma, molecules, cells, tissues , organs and systems
what are nutrients ?
chemical found in food that are critical to human growth and function
what are essential nutrients:
essential for life and must be consumed
what are functional foods :
foods that provides more than simple nutrition
what are non-nutrient substances:
phytochemical: natural chemicals found in plant foods that may provide some health benefits
zoochemicals: are natural chemicals found in animals that may provides some health benefits
what are the chemical nature of nutrients?
inorganic nutrients: contain no carbon atoms
-Minerals and water
organic nutrients: contain carbon atoms
-macronutrients and viramines
what measured is use for energy ?
energy is measured in kilojoules (kj) or kilocalories(kcal)
what does the energy content of food depend on ?
the energy content of food depends upon the amount of carbohydrates,fat and protein it contains
tell me how many calories does fat, carbohydrates, protein and alcohol have ?
fat (FAT) : 9 kcal
Carbohydrates: 4 kcal
Protein: 4kcal
Alcohol: 7 kcal
how does the body use nutrients as fuels?
metabolism is all the process by which nutrients are broken down to yield energy or are rearranged into body structes
what is DRI
Dietary reference intake are a set if scientifically developed reference of nutrients
what is CFG
Canada food guide
what is NFt
nutrition facts table
