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Test 2
What is the primary role for carbohydrates
Supply energy for body processes and activities
What are the classifications of carbohydrates
Chemical classifications: Monosaccharides, disaccharides, oligosaccharides, Polysaccharides
Nutritional Classification: Simple carbohydrates, complex carbohydrates
Define Monosaccharides
One molecule of sugar
What are the primary types of simple sugars
Monosaccharides and disaccharides
What is glycogen
Storage form of glucose in the body, found in the liver and muscles
What is the recommended daily intake of carbohydrates
55-65% of daily energy intake
What is dietary fibres daily recommendation
25-35 grams/day
What are the functions of carbohydrates
supply energy, spare protein, help burn fat efficiently, provide bulk, promote satiety
What are saturated fats
Fats primarily from animal sources that can raise blood cholesterol levels
What is the main difference between LDL and HDL cholesterol
LDL (bad cholesterol) deliveres cholesterol to tissues, increasing heart disease risk; HDL (good cholesterol) removes cholesterol from tissues, lowering heart disease risk
What is the caloric value of carbohydrates and protein
4 kcal/g
What component makes protein unique
Nitrogen
What are complete proteins
Proteins that contain all essential amino acids
What factors affect Basal Metabolic Rate (BMR)
Growth, age, muscle mass, nutrition, temperature
What is the definition of hunger
Physiological need for food
What process breaks down triglycerides in fat digestion
Pancreatic lipase breaks triglycerides into fatty acids and monoglycerides
What are the two essential fatty acids
Omega-6 (Linoleic acid) and Omega-3 (Alpha-linolenic acid)
What are the components of energy expenditure
Basal Metabolism, Physical activity, Thermic effect of food
What is the caloric value of fat
9 kcal/g
What are examples of vegetable sources of monounsaturated fats
Olive oil, canola oil
How much deficit in calories is required to lose 1 pound of body fat
3,500kcal
What is the role of insulin
Lowers blood glucose levels
What is protein deficiency disease associated with lack of protein intake called
Kwashiorkor or Marasmus
What does resistant starch do
Resists digestion in the small intestine; promotes gut health
What health problems are associated with high saturated fat intake
Atherosclerosis and cardiovascular disease
What are oligosaccharides
Consist of 3-10 sugar molecules and can have prebiotic effects on gut health
What types of foods are high in dietary fibre
Fruits, vegetables, whole grains, legumes, nuts, and seeds
What are the health benefits of soluble fibre
Helps stabilize blood sugar, lowers blood cholesterol, and increases feelings of fullness
Which hormones are involved in blood glucose regulation
Insulin and glucagon
What happens during ketosis
The body starts burning fat for fuel instead of carbohydrates due to insufficient carb intake
What are some characteristics of complex carbohydrates
Rich in vitamins, minerals, and fibre; provide sustained energy; usually take longer to digest
Identify one key function of proteins other than growth and repair
Enzymatic function (Catalyzing biochemical reactions)
What are limiting amino acids
Essential amino acids that are present in the smallest amounts in food and can restrict protein synthesis
What is marasmus
A severe form of malnutrition characterized by energy deficiency, resulting in significant weight loss and muscle wasting
What food sources are good examples of complete proteins
Animal products like eggs, milk, and meat; also quinoa and soy
What is the difference between short term and long term energy storage in the body
Short term energy is stores as glycogen in the liver and muscles; long term energy is stored as body fat
How does physical activity affect energy balance
Increases energy expenditure, which can contribute to caloric deficits and weight loss
What is the thermic effect of food (TEF)
The energy expedenture above basal metabolic rate that is associated with the cost of processing food for use and storage
Name one food source of omega-3 fatty acids
Fatty fish (salmon, mackerel)
How does dietary fiber contribute to digestive health
romotes regular bowel movements and helps prevent constipation
What is the significance of a high-quality protein source
Provide all essential amino acids in adequate amino acids in adequate amounts needed by the body
What are trans fats and their effects on health
Trans fats are artificially created fats that increase LDL cholesterol and risk of heart disease
What is an example of a natural source of resistant starch
Cooked and cooled potatoes, green bananas
What is the recommended protein intake for an average adult
Approximately 10-35% of total daily caloric intake, typically about 0.8 grams per kilogram of body weight
In what ways can one increase their HDL, cholesterol levels
Engage in regular exercise, lose excess weight, avoid smoking, and moderate alcohol consumption