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Fundamentals of Nutrition and Dietary Choices
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1
Question
What is the primary role of nutrients obtained from food in the body?
Answer
Provide energy, structural materials, and regulate physiological processes.
2
Question
Which macronutrients are considered energy-yielding and why?
Answer
Carbohydrates, fats, and proteins because they break down to release energy.
3
Question
What distinguishes organic from inorganic nutrients?
Answer
Organic nutrients contain carbon; inorganic do not.
4
Question
Why are vitamins called micronutrients?
Answer
They are required in small amounts, unlike macronutrients.
5
Question
Which nutrients are classified as essential, and why?
Answer
Carbohydrates, fats, proteins, vitamins, and minerals, because the body cannot produce enough of them.
6
Question
How does the body use carbohydrates, fats, and proteins during metabolism?
Answer
To provide energy for bodily functions and processes.
7
Question
What is the difference between minimally processed and ultra-processed foods?
Answer
Minimally processed foods undergo little change; ultra-processed foods are heavily altered with additives.
8
Question
Why do ultra-processed foods typically have less nutritional value?
Answer
They are made from substances not naturally consumed as foods and contain few whole ingredients.
9
Question
What is the significance of bioactive compounds like phytochemicals in foods?
Answer
They may reduce the risk of chronic diseases and influence physiological processes.
10
Question
How do food choices reflect individual values and cultural backgrounds?
Answer
Choices are influenced by environmental concerns, religious beliefs, social customs, and traditions.
11
Question
In what ways does marketing influence food choices?
Answer
It persuades consumers to buy more, emphasizing convenience and brand loyalty.
12
Question
How does availability and convenience affect dietary habits?
Answer
Limited access or time may lead to choosing less nutritious, more processed foods.
13
Question
What impact does age have on food preferences and choices?
Answer
Children prefer sweet, familiar foods; adults often choose based on health concerns.
14
Question
What is the effect of emotional states on eating behaviors?
Answer
People may eat to cope with emotions, leading to overeating or making comfort foods choices.
15
Question
How does environmental concern influence food selection?
Answer
People may choose foods with eco-labels or from local sources to minimize environmental impact.
16
Question
What role does social interaction play in food choices?
Answer
Meals serve as social events, influencing acceptance or rejection of certain foods.
17
Question
Why might someone choose foods based on religious dietary laws?
Answer
Religious beliefs dictate permissible foods, such as halal or kosher dietary rules.
18
Question
What is the relationship between body image and food choices?
Answer
Individuals may select foods and supplements to improve appearance or avoid detriments.
19
Question
How do medical conditions influence dietary restrictions?
Answer
Conditions like allergies or disease treatments may limit certain food selections.
20
Question
What distinguishes whole foods from ultra-processed foods?
Answer
Whole foods are minimally processed; ultra-processed foods are heavily altered with additives.
21
Question
How are energy values of foods calculated using macronutrient content?
Answer
Multiply grams of carbohydrate and protein by 4 kcal; fats by 9 kcal; sum results.
22
Question
Why is water considered a vital nutrient despite not providing energy?
Answer
It is essential as the medium for all bodily processes and regulation.
23
Question
What is the impact of food processing on nutritional value?
Answer
Minimal processing preserves nutrients; extensive processing can diminish it.
24
Question
What are the primary energy-yielding nutrients used to calculate kcalories in foods?
Answer
Carbohydrate (4 kcal/g), protein (4 kcal/g), fat (9 kcal/g)
25
Question
How do you calculate the kcalories provided by a food with known grams of carbohydrate, protein, and fat?
Answer
Multiply grams by 4 (carbohydrate, protein) or 9 (fat), then sum
26
Question
What percentage of kcalories from fat indicates the need to consider lower-fat food choices?
Answer
More than 35 percent
27
Question
Why is alcohol considered an energy-yielding substance but not a nutrient?
Answer
Because it cannot support growth, maintenance, or repair
28
Question
What does the term kcalorie in scientific contexts specifically refer to?
Answer
Kilocalories, energy measure of 1,000 calories
29
Question
What is the main purpose of Dietary Reference Intakes (DRIs)?
Answer
To assess and guide nutrient and energy intake for healthy individuals
30
Question
What are the two values used as goals for individual nutrient intake in DRIs?
Answer
Recommended Dietary Allowances (RDA) and Adequate Intakes (AI)