Macronutrients & Dietary Recommendations Flashcards
simplest form of sugar
monosaccharide
the 3 monosaccharides
glucose, fructose, and galactose
a disaccharide of combined glucose and galactose
lactose
a disaccharide of combined glucose and fructose
sucrose (table sugar)
a disaccharide of two combined glucose molecules
maltose
a chain of 3-10 simple sugars
oligosaccharide
a long chain of sugar molecules
polysaccharide
the only 2 polysaccharides humans can fully digest
glycogen and starch
plant carbohydrate found in grains and vegetables
starch
animal carbohydrate found in meats and seafood
glycogen
T/F: Physical training can increase stored glycogen fivefold.
True
Where is glycogen stored in the body?
liver and muscles
carbohydrates with a nitrogen-containing amino group (and sometimes sulfur) attached
amino acids
a linear chain of amino acids
polypeptide
a compound composed of 20 amino acids that is the major structural component of all body tissue
protein
the number of essential amino acids that cannot be produced by the body itself
8-10
how a specific food’s protein quality is determined
1) essential amino acid composition
2) digestibility
3) bioavailability
the degree to which amino acids can be used by the body
bioavailability
a protein that contains all essential amino acids
complete protein
the only plant-based complete protein
soy
examples of excellent incomplete protein sources that will provide all essential amino acids
1) grains-legumes (e.g., rice/beans)
2) grains-dairy (e.g., pasta/cheese)
3) legumes-seeds (e.g., falafel)
critical bodily functions that fats serve
1) insulation
2) cell structure
3) nerve transmission
4) vitamin absorption
5) hormone production
contain one or more double bonds between carbon atoms and are typically liquid at room temperature
unsaturated fatty acids
contains one double bond between two carbons
monounsaturated fat
contains a double bond between two or more sets of carbons
polyunsaturated fat
type of polyunsaturated fat that must be obtained from diet
essential fatty acids
the 2 types of essential fatty acids
1) omega-3 (linolenic acid)
2) omega-6 (linoleic acid)
3 forms of omega-3’s
1) alpha-linolenic acid (ALA)
2) eicosapentaenoic acid (EPA)
3) docosahexaenoic acid (DHA)
type of omega-3 that is found in plants
alpha-linolenic acid (ALA)
T/F: ALA can be converted to EPA and DHA in the body.
True
foods that EPA and DHA are commonly found in
1) egg yolk
2) cold-water fish (salmon, mackerel, cod)
3) shellfish (crab, shrimp, oyster)
benefits of omega-3’s
1) reduce blood clotting
2) dilate blood vessels
3) reduce inflammation
4) important for eye and brain development (and important for a growing fetus in late stages of pregnancy)
5) reduce cholesterol and triglyceride levels
6) may help preserve brain function and reduce risk of mental illness and ADHD
recommended intake of EPA+DHA
250-500 mg/day
T/F: Omega-6 fatty acids assist omega-3’s in reducing blood clotting and inflammation.
False
Act opposite to omega-3’s in that they seem to contribute to blood clotting and inflammation.
T/F: Instead of solely reducing omega-6 intake and increasing omega-3 intake, an individual show focus on having balance between the two for cardiovascular health benefits.
True
Daily recommendation of omega-6 intake for men and women
5-10% of total calories
Men: 17g
Women 12g
types of fat that lead to clogged arteries and increased risk for heart disease
trans fats and saturated fats