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Dietetics and Nutritional Science

Dietetics

A collection of factual questions regarding human nutrition, metabolism, and dietary science.

nutrition science metabolism health

10 Questions Medium Ages 18+ Oct 26, 2026

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About this Study Set

This study set covers Dietetics through 10 practice questions. A collection of factual questions regarding human nutrition, metabolism, and dietary science. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

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1 Which vitamin is essential for the synthesis of neurotransmitters and the formation of red blood cells, and is primarily found in animal products?

A Vitamin C
B Vitamin B12
C Vitamin E
D Vitamin K

2 What is the primary physiological role of dietary fiber in the human gastrointestinal tract?

A Providing energy for muscle contraction
B Increasing intestinal transit time
C Aiding in the maintenance of healthy gut microbiota
D Directly inhibiting the absorption of all fat-soluble vitamins

3 Which mineral is a critical component of hemoglobin, the protein responsible for oxygen transport in the blood?

A Magnesium
B Zinc
C Iron
D Calcium

4 In nutritional biochemistry, what are the building blocks of proteins?

A Fatty acids
B Monosaccharides
C Amino acids
D Nucleotides

5 Which of the following describes the thermic effect of food (TEF)?

A The heat produced during digestion, absorption, and metabolism of nutrients
B The base energy required to maintain organ function at rest
C The total energy expenditure during physical exercise
D The energy stored in adipose tissue

6 Which macronutrient provides the highest amount of energy per gram when metabolized?

A Carbohydrates
B Proteins
C Lipids
D Fiber

7 What is the function of the hormone leptin in the human body?

A To stimulate appetite
B To signal satiety and regulate long-term energy balance
C To increase blood glucose levels
D To facilitate the digestion of dietary fats

8 Which vitamin is synthesized in the human skin through exposure to ultraviolet B (UVB) radiation?

A Vitamin A
B Vitamin D
C Vitamin B6
D Vitamin C

9 What characterizes an essential amino acid in human nutrition?

A It can be synthesized by the liver from glucose
B It must be obtained through the diet as the body cannot synthesize it in sufficient quantities
C It is only found in plant-based food sources
D It is stored in large quantities in muscle tissue

10 Which organ is primarily responsible for the detoxification of substances and the regulation of blood glucose levels via glycogen storage?

A Kidneys
B Pancreas
C Liver
D Gallbladder

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