Nutrition, Diet & Food Chemistry MCQs 2026

Which type of sugar is found in milk and dairy products

1. A Fructose ✓
2. B Sucrose ✓
3. C Lactose ✓
4. D Maltose ✓

What condition involves an immune reaction to gluten, a protein found in wheat, barley, and rye, damaging the small intestine

1. A Lactose intolerance ✓
2. B Celiac disease ✓
3. C Diabetes ✓
4. D Anemia ✓

What is cholesterol primarily used for in the body, despite its negative health associations at high levels

1. A Building cell membranes and producing hormones ✓
2. B Providing quick energy ✓
3. C Building muscle tissue ✓
4. D Storing water ✓

Which type of cholesterol is often referred to as "bad cholesterol" due to its association with plaque buildup in arteries

1. A HDL ✓
2. B LDL ✓
3. C Triglycerides only ✓
4. D VLDL is generally worse but LDL is the common answer ✓

Which type of cholesterol is often referred to as "good cholesterol" for helping remove excess cholesterol from the bloodstream

1. A HDL ✓
2. B LDL ✓
3. C Triglycerides ✓
4. D VLDL ✓

What is the term for fats stored in the bloodstream, with elevated levels linked to heart disease risk

1. A Cholesterol only ✓
2. B Triglycerides ✓
3. C Amino acids ✓
4. D Glucose ✓

What is the recommended daily water intake commonly cited as a general guideline for adults

1. A About 1 liter ✓
2. B About 2 liters (8 glasses) ✓
3. C About 5 liters ✓
4. D About 10 liters ✓

What is the term for the body mass index (BMI) calculation, commonly used to assess body weight relative to height

1. A Weight divided by height squared (kg/m²) ✓
2. B Weight divided by height ✓
3. C Weight multiplied by height ✓
4. D Height divided by weight ✓

Which vitamin or nutrient deficiency is a global public health concern, often addressed through fortification of common foods like salt or flour

1. A Iodine (in salt) and Iron/Folic acid (in flour) ✓
2. B Vitamin C ✓
3. C Vitamin K ✓
4. D Zinc alone ✓

Which food preservation method involves the use of beneficial bacteria or yeast to convert sugars into acids, alcohol, or gases

1. A Pasteurization ✓
2. B Fermentation ✓
3. C Dehydration ✓
4. D Refrigeration ✓

Which food processing method uses heat to kill harmful bacteria in products like milk, without fully cooking the food

1. A Pasteurization ✓
2. B Dehydration ✓
3. C Irradiation ✓
4. D Canning ✓

Which macronutrient is the body's primary and most efficient source of energy

1. A Carbohydrates ✓
2. B Proteins ✓
3. C Fats ✓
4. D Vitamins ✓

Which macronutrient is essential for building and repairing body tissues, including muscles

1. A Carbohydrates ✓
2. B Proteins ✓
3. C Fats ✓
4. D Fiber ✓

Which macronutrient provides the most energy per gram, roughly double that of carbohydrates or protein

1. A Carbohydrates ✓
2. B Proteins ✓
3. C Fats ✓
4. D Water ✓

Approximately how many calories does one gram of carbohydrate provide

1. A 4 calories ✓
2. B 7 calories ✓
3. C 9 calories ✓
4. D 12 calories ✓

Approximately how many calories does one gram of protein provide

1. A 4 calories ✓
2. B 7 calories ✓
3. C 9 calories ✓
4. D 12 calories ✓

Approximately how many calories does one gram of fat provide

1. A 4 calories ✓
2. B 7 calories ✓
3. C 9 calories ✓
4. D 12 calories ✓

What are proteins broken down into during digestion, serving as the basic building blocks

1. A Fatty acids ✓
2. B Amino acids ✓
3. C Glucose molecules ✓
4. D Glycerol ✓

How many amino acids are considered "essential," meaning they must be obtained through diet as the body cannot synthesize them

1. A 5 ✓
2. B 9 ✓
3. C 15 ✓
4. D 20 ✓

What are complex carbohydrates broken down into during digestion, serving as the body's primary fuel

1. A Amino acids ✓
2. B Fatty acids ✓
3. C Glucose ✓
4. D Cholesterol ✓

Which type of fat is generally considered healthier, found in foods like olive oil, nuts, and avocados

1. A Saturated fat ✓
2. B Unsaturated fat ✓
3. C Trans fat ✓
4. D Cholesterol ✓

Which type of fat, often found in processed foods and linked to increased heart disease risk, is largely avoided through regulation in many countries

1. A Saturated fat ✓
2. B Unsaturated fat ✓
3. C Trans fat ✓
4. D Omega-3 fatty acids ✓

Which type of dietary fiber dissolves in water and can help lower cholesterol levels

1. A Soluble fiber ✓
2. B Insoluble fiber ✓
3. C Trans fiber ✓
4. D Simple fiber ✓

Which type of dietary fiber does not dissolve in water and helps promote regular bowel movements

1. A Soluble fiber ✓
2. B Insoluble fiber ✓
3. C Complex fiber ✓
4. D Trans fiber ✓

Which food preservation method involves removing moisture to prevent microbial growth

1. A Pasteurization ✓
2. B Dehydration ✓
3. C Fermentation ✓
4. D Homogenization ✓

What is the term for the total number of calories a body needs to maintain basic physiological functions at rest

1. A Basal Metabolic Rate (BMR) ✓
2. B Total Energy Expenditure ✓
3. C Resting Heart Rate ✓
4. D Caloric Deficit ✓

Which essential fatty acids, found in fish like salmon, are known for their heart and brain health benefits

1. A Omega-3 fatty acids ✓
2. B Omega-9 fatty acids ✓
3. C Saturated fatty acids ✓
4. D Trans fatty acids ✓

Which type of sugar is found naturally in fruit and is one of the simplest carbohydrate molecules

1. A Fructose ✓
2. B Sucrose ✓
3. C Lactose ✓
4. D Maltose ✓

Which type of sugar is commonly known as table sugar, a combination of glucose and fructose

1. A Fructose ✓
2. B Sucrose ✓
3. C Lactose ✓
4. D Galactose ✓

What condition results from the body's inability to properly digest lactose, the sugar found in milk

1. A Lactose intolerance ✓
2. B Diabetes ✓
3. C Celiac disease ✓
4. D Gluten sensitivity ✓

What term describes a measure of how quickly a carbohydrate-containing food raises blood glucose levels

1. A Glycemic Index ✓
2. B Caloric Density ✓
3. C Nutrient Density ✓
4. D Basal Metabolic Rate ✓

What term describes the state of consuming more calories than the body expends, typically leading to weight gain

1. A Caloric deficit ✓
2. B Caloric surplus ✓
3. C Basal metabolism ✓
4. D Nutrient deficiency ✓

What term describes the state of consuming fewer calories than the body expends, typically leading to weight loss

1. A Caloric deficit ✓
2. B Caloric surplus ✓
3. C Basal metabolism ✓
4. D Nutrient density ✓

Which condition results from severe, prolonged protein deficiency, particularly affecting children in some regions, causing swollen bellies

1. A Marasmus ✓
2. B Kwashiorkor ✓
3. C Scurvy ✓
4. D Rickets ✓

Which condition results from severe deficiency of both calories and protein, causing extreme wasting

1. A Marasmus ✓
2. B Kwashiorkor ✓
3. C Pellagra ✓
4. D Beriberi ✓

What is the general term for substances the body requires in relatively large amounts, such as carbohydrates, proteins, and fats

1. A Micronutrients ✓
2. B Macronutrients ✓
3. C Phytonutrients ✓
4. D Antioxidants ✓

What is the general term for nutrients needed in smaller amounts, such as vitamins and minerals

1. A Macronutrients ✓
2. B Micronutrients ✓
3. C Phytonutrients ✓
4. D Antioxidants ✓

What is the term for naturally occurring compounds in plants that may offer health benefits, such as those found in colorful fruits and vegetables

1. A Macronutrients ✓
2. B Micronutrients ✓
3. C Phytonutrients ✓
4. D Amino acids ✓

What is the term for substances that help protect cells from damage caused by free radicals

1. A Preservatives ✓
2. B Antioxidants ✓
3. C Emulsifiers ✓
4. D Stabilizers ✓

Which mineral is essential for thyroid hormone production and commonly added to table salt to prevent deficiency

1. A Iron ✓
2. B Iodine ✓
3. C Zinc ✓
4. D Magnesium ✓

Which essential nutrient, though not providing calories, is critical for virtually all bodily functions and makes up a majority of body weight

1. A Fiber ✓
2. B Water ✓
3. C Protein ✓
4. D Vitamin C ✓

Which mineral plays a key role in oxygen transport within red blood cells

1. A Calcium ✓
2. B Iron ✓
3. C Potassium ✓
4. D Sodium ✓

Which mineral is important for immune function and wound healing, with deficiency linked to slower healing and hair loss

1. A Calcium ✓
2. B Zinc ✓
3. C Sodium ✓
4. D Potassium ✓

Which mineral works alongside calcium and phosphorus to support bone health and structure

1. A Zinc ✓
2. B Magnesium ✓
3. C Iron ✓
4. D Sodium ✓

Excessive sodium (salt) intake is commonly linked to which health condition

1. A High blood pressure (hypertension) ✓
2. B Anemia ✓
3. C Osteoporosis ✓
4. D Diabetes ✓

What is the term for the process by which the small intestine absorbs digested nutrients into the bloodstream

1. A Digestion ✓
2. B Absorption ✓
3. C Excretion ✓
4. D Metabolism ✓

What is the broad term for all chemical processes occurring within the body to maintain life, including energy production

1. A Digestion ✓
2. B Absorption ✓
3. C Metabolism ✓
4. D Excretion ✓

Which essential amino acid is often considered the most limiting in plant-based diets, requiring careful dietary planning for vegetarians

1. A Lysine ✓
2. B Tryptophan ✓
3. C Leucine ✓
4. D Methionine ✓

Which vitamin, though technically a hormone precursor, is often grouped with fat-soluble vitamins and synthesized via sun exposure

1. A Vitamin A ✓
2. B Vitamin D ✓
3. C Vitamin C ✓
4. D Vitamin B12 ✓

What is the term for the minimum daily intake level of a nutrient needed to prevent deficiency in most healthy individuals

1. A Recommended Dietary Allowance (RDA) ✓
2. B Basal Metabolic Rate ✓
3. C Glycemic Index ✓
4. D Caloric Deficit ✓

Which extreme condition results from consuming far more calories than needed over a prolonged period, potentially leading to serious health complications

1. A Malnutrition (undernutrition) ✓
2. B Obesity ✓
3. C Anorexia ✓
4. D Dehydration ✓

Which serious eating disorder involves severe restriction of food intake, often driven by an intense fear of weight gain

1. A Bulimia nervosa ✓
2. B Anorexia nervosa ✓
3. C Binge eating disorder ✓
4. D Orthorexia ✓

Which essential nutrient class, though needed in only trace amounts, includes substances like iron, zinc, and iodine

1. A Macronutrients ✓
2. B Trace minerals (micronutrients) ✓
3. C Carbohydrates ✓
4. D Fats ✓

Which common foodborne bacterial pathogen is often associated with undercooked poultry and eggs

1. A Salmonella ✓
2. B Botulinum ✓
3. C Listeria specifically ✓
4. D Vibrio cholerae ✓

Which dangerous toxin, produced by Clostridium botulinum bacteria, can contaminate improperly canned foods

1. A Aflatoxin ✓
2. B Botulinum toxin ✓
3. C Salmonella toxin ✓
4. D E. coli toxin ✓

Which naturally occurring toxin, produced by certain molds, can contaminate improperly stored grains and nuts, posing serious health risks

1. A Aflatoxin ✓
2. B Botulinum toxin ✓
3. C Ricin ✓
4. D Cyanide ✓

Which type of dietary pattern excludes meat but may still include dairy, eggs, or fish depending on the specific variation

1. A Vegetarian diet (general term) ✓
2. B Vegan diet strictly ✓
3. C Carnivore diet ✓
4. D Paleo diet ✓

Which type of dietary pattern excludes all animal products, including dairy and eggs

1. A Vegetarian diet ✓
2. B Vegan diet ✓
3. C Pescatarian diet ✓
4. D Flexitarian diet ✓

Which nutrient deficiency during childhood is a leading cause of stunted growth in developing countries

1. A Protein-energy malnutrition ✓
2. B Excess sugar intake ✓
3. C Excess fat intake ✓
4. D Excess sodium intake ✓

What does the acronym "DASH" stand for in the DASH diet, designed to help manage blood pressure

1. A Dietary Approaches to Stop Hypertension ✓
2. B Diet And Systemic Health ✓
3. C Daily Approach to Sustainable Health ✓
4. D Diverse Approach to Sustained Hydration ✓

Which dietary approach severely restricts carbohydrate intake to induce a metabolic state called ketosis

1. A DASH diet ✓
2. B Ketogenic diet ✓
3. C Mediterranean diet ✓
4. D Vegan diet ✓

Which eating pattern emphasizes fruits, vegetables, whole grains, olive oil, and fish, associated with cardiovascular benefits

1. A Ketogenic diet ✓
2. B Mediterranean diet ✓
3. C Paleo diet ✓
4. D Atkins diet ✓

What is the term for a diet that includes fish but excludes other meat

1. A Vegan diet ✓
2. B Pescatarian diet ✓
3. C Flexitarian diet ✓
4. D Ketogenic diet ✓

Which process involves breaking down fat globules in milk to prevent separation, creating a uniform consistency

1. A Pasteurization ✓
2. B Homogenization ✓
3. C Fermentation ✓
4. D Irradiation ✓

What term describes food additives used to prevent spoilage and extend shelf life

1. A Preservatives ✓
2. B Emulsifiers ✓
3. C Stabilizers ✓
4. D Sweeteners ✓

What term describes food additives that help mix ingredients that would normally separate, such as oil and water

1. A Preservatives ✓
2. B Emulsifiers ✓
3. C Stabilizers ✓
4. D Antioxidant additives ✓

Which foodborne pathogen is of particular concern for pregnant women, as it can cause serious complications for the fetus

1. A Salmonella generally ✓
2. B Listeria ✓
3. C E. coli generally ✓
4. D Botulinum toxin ✓

Which food processing method involves exposing food to ionizing radiation to kill bacteria and extend shelf life

1. A Pasteurization ✓
2. B Irradiation ✓
3. C Fermentation ✓
4. D Homogenization ✓

Which eating disorder involves cycles of binge eating followed by compensatory behaviors, such as purging

1. A Anorexia nervosa ✓
2. B Bulimia nervosa ✓
3. C Simple overeating ✓
4. D Pica ✓

Which food group provides the primary source of dietary fiber

1. A Meats ✓
2. B Fruits, vegetables, and whole grains ✓
3. C Dairy products ✓
4. D Oils and fats ✓

Which nutrient, found in foods like nuts and fatty fish, is important for brain development and function

1. A Omega-3 fatty acids ✓
2. B Simple sugars ✓
3. C Saturated fats primarily ✓
4. D Sodium ✓

What is the term for foods that have undergone significant industrial processing, often high in added sugars, fats, and sodium

1. A Whole foods ✓
2. B Ultra-processed foods ✓
3. C Organic foods ✓
4. D Raw foods ✓

What is the general term for the science studying the relationship between diet and health

1. A Nutrition science (Dietetics) ✓
2. B Toxicology ✓
3. C Pharmacology ✓
4. D Endocrinology ✓

What professional title is given to a specialist trained in food and nutrition science, often providing dietary guidance in clinical settings

1. A Dietitian ✓
2. B Pharmacist ✓
3. C Toxicologist ✓
4. D Endocrinologist ✓

Which nutrient is the body unable to produce on its own and must obtain entirely through diet, termed "essential"

1. A All vitamins and some fatty/amino acids ✓
2. B Only carbohydrates ✓
3. C Only water ✓
4. D Only sodium ✓

What term describes nutrients the body can synthesize on its own, even if also obtained through diet

1. A Essential nutrients ✓
2. B Non-essential nutrients ✓
3. C Macronutrients specifically ✓
4. D Trace nutrients specifically ✓

What is the term for the total energy value of food, typically measured in calories or kilojoules

1. A Caloric content ✓
2. B Glycemic load ✓
3. C Nutrient density ✓
4. D Bioavailability ✓

What term describes the amount of a specific nutrient a food provides relative to its calorie content

1. A Caloric content ✓
2. B Nutrient density ✓
3. C Bioavailability ✓
4. D Glycemic load ✓

Which essential fatty acid, found in flaxseed and fish, the body cannot produce on its own

1. A Omega-3 (Alpha-linolenic acid) ✓
2. B Omega-9 ✓
3. C Saturated fatty acids generally ✓
4. D Trans fatty acids ✓

What is the term for the minimum period of time recommended between meals to support healthy digestion, though views vary by dietary approach

1. A No universally fixed rule; varies by individual and dietary approach ✓
2. B Exactly 2 hours always ✓
3. C Exactly 6 hours always ✓
4. D Exactly 12 hours always ✓

Which nutrient class provides no caloric energy but is essential for regulating body temperature and other vital functions

1. A Carbohydrates ✓
2. B Water ✓
3. C Fats ✓
4. D Proteins ✓

Which health organization commonly issues global dietary guidelines and nutrient intake recommendations

1. A World Health Organization (WHO) ✓
2. B International Monetary Fund ✓
3. C World Trade Organization ✓
4. D UNESCO ✓

Which historically significant nutrition-related discovery was made by James Lind through a controlled dietary experiment on sailors

1. A The cure for scurvy using citrus fruits ✓
2. B The discovery of vitamins broadly ✓
3. C The discovery of protein ✓
4. D The cause of diabetes ✓

What broad dietary term describes eating patterns that avoid genetically modified organisms

1. A Non-GMO diet ✓
2. B Vegan diet ✓
3. C Ketogenic diet ✓
4. D Paleo diet ✓

Which nutrient becomes especially important during breastfeeding to support milk production and infant nutrition

1. A Calcium (and various other nutrients broadly) ✓
2. B Only sodium ✓
3. C Only saturated fat ✓
4. D Only simple sugars ✓

Which nutrient is specifically needed in higher amounts during pregnancy to support increased blood volume and fetal development

1. A Iron ✓
2. B Vitamin C exclusively ✓
3. C Sodium ✓
4. D Saturated fat ✓

What is the term for restoring nutrients lost during food processing, such as adding back B vitamins to refined grains

1. A Fortification ✓
2. B Enrichment ✓
3. C Homogenization ✓
4. D Pasteurization ✓

Which vitamin does the body synthesize with the help of gut bacteria, in addition to dietary sources

1. A Vitamin K ✓
2. B Vitamin A ✓
3. C Vitamin C ✓
4. D Vitamin D ✓

Which term describes foods naturally rich in a nutrient without any additional fortification, such as oranges being naturally rich in Vitamin C

1. A Fortified foods ✓
2. B Enriched foods ✓
3. C Naturally rich foods ✓
4. D Synthetic foods ✓

What is the term for foods fortified with additional nutrients not naturally present, such as Vitamin D-fortified milk

1. A Organic foods ✓
2. B Fortified foods ✓
3. C Processed foods generally ✓
4. D Raw foods ✓

Which type of dietary fat, found in coconut oil and butter, is solid at room temperature and generally recommended in moderation

1. A Saturated fat ✓
2. B Unsaturated fat ✓
3. C Omega-3 fatty acids specifically ✓
4. D Trans fat exclusively ✓

What is the general recommended guideline regarding daily added sugar intake, according to health organizations like WHO

1. A Less than 10% of total daily calories, ideally less than 5% ✓
2. B More than 30% of total daily calories ✓
3. C Exactly 50 grams regardless of caloric intake ✓
4. D No specific guideline exists ✓

Which general term describes any condition resulting from insufficient vitamin intake

1. A Hypervitaminosis ✓
2. B Hypovitaminosis ✓
3. C Overnutrition ✓
4. D Bulimia ✓

Which general term describes any condition resulting from excessive vitamin intake, typically from supplements rather than food

1. A Hypervitaminosis ✓
2. B Hypovitaminosis ✓
3. C Malnutrition (undernutrition) ✓
4. D Anorexia ✓

Which condition, related to excessive intake of Vitamin A, particularly from supplements, can cause liver damage and other toxic effects

1. A Hypervitaminosis A ✓
2. B Hypovitaminosis A ✓
3. C Scurvy ✓
4. D Rickets ✓

Which vitamin or mineral supplement is commonly recommended for individuals following a strict vegan diet, beyond B12

1. A Iron and Zinc, alongside B12, due to lower bioavailability from plant sources ✓
2. B Only Vitamin C ✓
3. C Only Sodium ✓
4. D No supplements are typically needed ✓

Which term describes the practice of restricting eating to specific time windows during the day

1. A Intermittent fasting ✓
2. B Continuous fasting ✓
3. C Caloric restriction generally ✓
4. D Meal skipping ✓

What condition, caused by inadequate iodine intake during pregnancy, can severely impair fetal brain development

1. A Cretinism ✓
2. B Goiter (in the mother only) ✓
3. C Rickets ✓
4. D Scurvy ✓

Which mineral, found in seafood and dairy, works alongside Vitamin D to support bone mineralization

1. A Iron ✓
2. B Phosphorus ✓
3. C Sodium ✓
4. D Potassium ✓

What term describes how efficiently the body can absorb and use a particular nutrient from food

1. A Caloric content ✓
2. B Glycemic load ✓
3. C Nutrient density ✓
4. D Bioavailability ✓