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Nutrition and Dietetics Final Exam Questions Answered 100% correct
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Nutrition and Dietetics Final Exam Questions Answered 100% correct What is health? Health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity Six categories of nutrients Carbohydrates Proteins Minerals Vitamins Lipids/Fats ...

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  • August 1, 2023
  • 17
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

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  • nutrition and dietetics final exam questions answe
  • what is health health is a state of complete phys
  • six categories of nutrients carbohydrates proteins
  • food components primary components nutrients s

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Nutrition and Dietetics Final Exam Questions Answered 100% correct
What is health? - answer Health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity
Six categories of nutrients - answer Carbohydrates
Proteins
Minerals
Vitamins
Lipids/Fats
Water
Objectives of Diet and Nutrition - answer 1- Energetic: provide energy required for all
metabolic processes and also for physical activities
2- Plastic: formation and maintenance of structures
3- Regulatory: regulation of metabolic processes
What does diet depend on? - answer Availability
Selection (depending on economic-educational factors, habits, traditions, etc.) Appetite
Nutritional needs
Difference between diet and nutrition - answer Diet: voluntary, aware, can be taught (choice)
Nutrition: Involuntary, unaware, cannot be taught
Food Components - answer Primary components: nutrients
Secondary components: responsible for what food looks like --> color, smell, flavor/taste, texture
Macronutrients - answer provide bulk energy for metabolic system to function
Carbs
Fats
Proteins
Micronutrients - answer provide necessary cofactors for metabolism; protective and regulatory functions
Minerals
Vitamins
Essential nutrients - answer cannot be synthesized internally at all, or in sufficient quantities, so must be consumed from outside source Nonessential nutrients - answer can be generated by body although they may also often be absorbed from food
How are proteins broken down during digestion? - answer proteins broken down into peptides in stomach, then broken into amino acids which are absorbed thu small intestine
How are lipids digested? - answer digested mainly in small intestine thru bile salts through emulsification, which allows lipases to divide lipids into fatty acids and monoglycerides
-enter bloodstream through micelles and recombine into chylomicrons
Carbohydrates - answer C, H, O compounds
Also called sugars or saccharides
Converted into glucose, transported by blood and used by cells Provide energy
Can be stored as glycogen in liver
Monosaccharides - answer ‐ They are the simplest carbohydrates
‐ Made of a polyhydroxiketone or
polyhydroxialdehide molecule.
‐ Examples:
» Glucose
» Fructose
» Galactose
» Ribose and deoxyribose
» Sugar alcohols: sorbitol, xilitol,
» Alcohol (ethanol): provides
7 Kcal/g
Oligosaccharides - answer - Composed of short chains of monosaccharides
- Disaccharides are the most important
- Examples:
• Sucrose
• Lactose
• Maltose
• Dextrins
Polysaccharides - answer -complex carbs
-composed of numerous monosaccharide molecules ‐ Types:
• Digestible polysaccharides: They provide energy
‐ Starch
‐ Glycogen
• Non
‐digestible polysaccharides: Fiber
‐ Cellulose ‐ Hemicellulose
‐ Pectins
‐ Agar
‐ Gums and Mucilage
Functions of carbohydrates - answer -Energy supply: provide 4 kcal/g
-stored as glycogen
-save using other nutrients like lipids and proteins
-regulate GI functions
Carb digestion - answer to digest carbs, need:
-pytalin
-pancreatic juice
-intracellular enzymes
saccharide digestion begins in the mouth
Carb nutritional requirements - answer 55-60% of the total dietary energy
-preferable to consume complex carbs (fiber, starch, lactose, sucrose)
Lipids - answer -main caloric reserve
-C, H, O compounds
-insoluble in water but soluble in organic solvents (i.e. ether and chloroform)
• Examples:
• Triglycerides
• Phospholipids
• Cholesterol
• CIS Fatty acids
Triglyceride - answer -can be fats and oils
-composed of one molecule of glycerol and three fatty acids connected by ester bonds
Types:
-saturated
-MUFA (monounsaturated)
-PUFA (polyunsaturated)
Essential fatty acids - answer -have to be supplied by food
- Examples:
• Oleic acid (olive oil)
• Linoleic acid (seed oils) (ω ‐6)
• Linolenic acid (soya bean oil) (ω ‐3)
• ω‐3 acids (oily fish)
• ω‐6 acids (nuts, grains and soybeans, not animal
sources)

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