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Questions and Answers

What is the primary function of nutrients in the body?

  • To provide energy and support bodily functions (correct)
  • To increase the volume of food consumed
  • To enhance flavor in food
  • To eliminate wastes from the body

Which of the following is NOT a main nutrient?

  • Carbohydrates
  • Proteins
  • Vitamins
  • Fiber (correct)

How do simple nutrients reach the body's cells?

  • They are converted into complex nutrients first
  • They are metabolized in the liver before entering the bloodstream
  • They bypass digestion and go directly into the cells
  • They are absorbed by the blood after digestion (correct)

What classification does water fall under when discussing food components?

<p>Inorganic component (D)</p> Signup and view all the answers

What does the study of nutritional sciences primarily focus on?

<p>The interaction of nutrients and health (B)</p> Signup and view all the answers

What is the primary source of energy for the body?

<p>Food ration (D)</p> Signup and view all the answers

Which macronutrient produces the highest amount of energy per gram?

<p>Lipids (A)</p> Signup and view all the answers

What factors can influence energy expenditure in the body?

<p>Age, gender, and physiological state (C)</p> Signup and view all the answers

To achieve energy equilibrium, what must be balanced?

<p>Energy consumption and energy expenditure (B)</p> Signup and view all the answers

How much energy does 1 gram of carbohydrates produce?

<p>17 kJ (D)</p> Signup and view all the answers

Which group has the highest daily energy expenditure?

<p>Women (Pregnant) (D)</p> Signup and view all the answers

What is the primary function of basal metabolism?

<p>To maintain basic bodily functions (D)</p> Signup and view all the answers

What is one benefit of dietary fiber?

<p>Slows down lipid digestion (D)</p> Signup and view all the answers

How is energy released during digestion measured?

<p>By measuring oxygen consumption (B)</p> Signup and view all the answers

Why can't humans digest plant-based dietary fiber?

<p>Deficiency of cellulase enzymes (B)</p> Signup and view all the answers

Which vitamin is considered water-soluble?

<p>Vitamin C (A)</p> Signup and view all the answers

What is a characteristic of fat-soluble vitamins?

<p>They accumulate in the body over time. (D)</p> Signup and view all the answers

Which of the following vitamins is most likely to pose a risk due to accumulation in the body?

<p>Vitamin K (B)</p> Signup and view all the answers

How are excess water-soluble vitamins handled by the body?

<p>They are eliminated via urine. (A)</p> Signup and view all the answers

What is a risk associated with high levels of fat-soluble vitamins?

<p>They can lead to toxic build-up in body organs. (C)</p> Signup and view all the answers

Flashcards

What is nutrition?

The study of how food affects our health and growth.

What are nutrients?

Substances found in food that our bodies need for growth, reproduction, and survival.

What is nutritional science?

The science that studies the processes of nutrition.

What is a complex food?

Foods made up of different nutrients that are broken down into simpler forms during digestion.

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What are the main nutrients?

The main nutrients found in food, including carbohydrates, fats, proteins, vitamins, and minerals.

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Energy expenditure

The amount of energy the body uses for daily functions like breathing, moving, and thinking.

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Food ration

The main energy source for the body, consumed through food.

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Energy produced by food

The energy released when the body breaks down carbohydrates, proteins, or lipids.

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Body equilibrium

The process where the energy obtained from food matches the energy used by the body.

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Factors affecting energy expenditure

Factors that influence how much energy the body uses, such as age, sex, and health.

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What is Basal Metabolism?

The minimum energy required to keep your body functioning at rest, like your heart beating, lungs breathing, and brain working.

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How is energy expenditure measured?

When your body breaks down food to release energy, it uses oxygen. The amount of oxygen used is a way to measure how much energy is released.

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What is dietary fiber and its role in the body?

Plant-based fibers, like cellulose, are not broken down by our bodies. They help digestion, make us feel full, and can help prevent obesity.

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What factors influence daily energy expenditure?

The amount of energy needed each day varies based on age, gender, and even pregnancy or breastfeeding.

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What is oxidation in the context of energy expenditure?

The process of breaking down food in the body to release energy.

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Water-soluble vitamins

Vitamins that dissolve in water, easily eliminated by the body, and don't pose a risk of accumulation.

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Fat-soluble vitamins

Vitamins that dissolve in fats, not easily eliminated by the body, and can build up over time.

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Elimination of water-soluble vitamins

Excess amounts of water-soluble vitamins are usually excreted through urine.

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Risk of buildup of fat-soluble vitamins

High levels of fat-soluble vitamins build up in the body, potentially causing health risks.

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Difference in elimination and risk between water-soluble and fat-soluble vitamins

Fat-soluble vitamins, unlike water-soluble vitamins, can be stored in the body and may pose a risk of accumulation.

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