Module 1: The Food on Your Plate Flashcards
define nutrition
study of the interaction between nutrients, the body’s function, and health
define nutrient
a substance that the body requires for energy, regulation of body processes, and structure
define essential nutrient
must be acquired by diet
define non-essential nutrient
- body can make in adequate amounts
- glucose, fatty acids, vitamin D
define calorie
- scientific unit used to measure energy in joule
- energy needed to raise 1ml of water 1 degree
- cal=kcal
what are two ways to classify nutrients
- provide energy vs don’t provide energy
- macronutrients vs micronutrients
what nutrients provide energy
- proteins
- lipids
- carbohydrates
what nutrients don’t provide energy
- water
- minerals
- vitamins
what do nutrients that don’t provide energy do
assist with regulating body processes and providing structure
what are the macronutreints
- carbohydrates
- fat
- proteins
- water
what are the micronutrients
- vitamins
- minerals
describe collagen
- protein
- lacks essential amino acids (tryptophan)
- most turned over protein in the body
what is in 5 hour energy and how does it provide energy
- B complex vitamins
- used as cofactors in the citric acid cycle
how many kcal/gram do carbohydrates, lipids, and proteins give
- carbs: 4
- lipids: 9
- proteins: 4
function of carbohydrates
provide energy
function of lipids
- provide energy
- energy storage
- cell structure and regulation
function of proteins
- provide energy (least used form out of macronutrients)
- promote growth and maintenance of tissue
function of water
- regulate body temperature
- cell hydration and lubrication
function of vitamins
- regulate biochemical reactions
- antioxidant
function of minerals
- regulate biochemical reactions
- provide structure
does alcohol supply energy and is it a nutrient
- provides 7 kcal/gram
- not considered a nutrient
what is included as carbohydrates
- sugars
- starches
- fibers
what are carbohydrates composed of
- carbon
- oxygen
- hydrogen
what is included as lipids
- triglycerides
- phospholipids
- sterols
which type of lipid is most commonly consumed
triglycerides
what are common food sources of lipids
- oils
- butter
what are lipids composed of
- carbon
- oxygen
- hydrogen
what makes lipid composition different from carbohydrate composition
- lipids contain 2x as many hydrogen atoms as carbohydrates which explains why they provide more kcal/gram
- carbs can by polymerized to make long chains while lipids can only go up to triglycerides
describe the structure of triglycerides
- glycerol backbone made from glucose
- 3 fatty acid chains