Nutrition, Diet & Food Chemistry MCQs 2026

Which type of sugar is found in milk and dairy products

1. AFructose✓
2. BSucrose✓
3. CLactose✓
4. DMaltose✓

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

1. ALactose intolerance✓
2. BCeliac disease✓
3. CDiabetes✓
4. DAnemia✓

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

1. ABuilding cell membranes and producing hormones✓
2. BProviding quick energy✓
3. CBuilding muscle tissue✓
4. DStoring water✓

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

1. AHDL✓
2. BLDL✓
3. CTriglycerides only✓
4. DVLDL 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. AHDL✓
2. BLDL✓
3. CTriglycerides✓
4. DVLDL✓

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

1. ACholesterol only✓
2. BTriglycerides✓
3. CAmino acids✓
4. DGlucose✓

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

1. AAbout 1 liter✓
2. BAbout 2 liters (8 glasses)✓
3. CAbout 5 liters✓
4. DAbout 10 liters✓

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

1. AWeight divided by height squared (kg/m²)✓
2. BWeight divided by height✓
3. CWeight multiplied by height✓
4. DHeight 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. AIodine (in salt) and Iron/Folic acid (in flour)✓
2. BVitamin C✓
3. CVitamin K✓
4. DZinc alone✓

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

1. APasteurization✓
2. BFermentation✓
3. CDehydration✓
4. DRefrigeration✓

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

1. APasteurization✓
2. BDehydration✓
3. CIrradiation✓
4. DCanning✓

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

1. ACarbohydrates✓
2. BProteins✓
3. CFats✓
4. DVitamins✓

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

1. ACarbohydrates✓
2. BProteins✓
3. CFats✓
4. DFiber✓

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

1. ACarbohydrates✓
2. BProteins✓
3. CFats✓
4. DWater✓

Approximately how many calories does one gram of carbohydrate provide

1. A4 calories✓
2. B7 calories✓
3. C9 calories✓
4. D12 calories✓

Approximately how many calories does one gram of protein provide

1. A4 calories✓
2. B7 calories✓
3. C9 calories✓
4. D12 calories✓

Approximately how many calories does one gram of fat provide

1. A4 calories✓
2. B7 calories✓
3. C9 calories✓
4. D12 calories✓

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

1. AFatty acids✓
2. BAmino acids✓
3. CGlucose molecules✓
4. DGlycerol✓

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

1. A5✓
2. B9✓
3. C15✓
4. D20✓

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

1. AAmino acids✓
2. BFatty acids✓
3. CGlucose✓
4. DCholesterol✓

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

1. ASaturated fat✓
2. BUnsaturated fat✓
3. CTrans fat✓
4. DCholesterol✓

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. ASaturated fat✓
2. BUnsaturated fat✓
3. CTrans fat✓
4. DOmega-3 fatty acids✓

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

1. ASoluble fiber✓
2. BInsoluble fiber✓
3. CTrans fiber✓
4. DSimple fiber✓

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

1. ASoluble fiber✓
2. BInsoluble fiber✓
3. CComplex fiber✓
4. DTrans fiber✓

Which food preservation method involves removing moisture to prevent microbial growth

1. APasteurization✓
2. BDehydration✓
3. CFermentation✓
4. DHomogenization✓

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

1. ABasal Metabolic Rate (BMR)✓
2. BTotal Energy Expenditure✓
3. CResting Heart Rate✓
4. DCaloric Deficit✓

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

1. AOmega-3 fatty acids✓
2. BOmega-9 fatty acids✓
3. CSaturated fatty acids✓
4. DTrans fatty acids✓

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

1. AFructose✓
2. BSucrose✓
3. CLactose✓
4. DMaltose✓

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

1. AFructose✓
2. BSucrose✓
3. CLactose✓
4. DGalactose✓

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

1. ALactose intolerance✓
2. BDiabetes✓
3. CCeliac disease✓
4. DGluten sensitivity✓

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

1. AGlycemic Index✓
2. BCaloric Density✓
3. CNutrient Density✓
4. DBasal Metabolic Rate✓

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

1. ACaloric deficit✓
2. BCaloric surplus✓
3. CBasal metabolism✓
4. DNutrient deficiency✓

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

1. ACaloric deficit✓
2. BCaloric surplus✓
3. CBasal metabolism✓
4. DNutrient density✓

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

1. AMarasmus✓
2. BKwashiorkor✓
3. CScurvy✓
4. DRickets✓

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

1. AMarasmus✓
2. BKwashiorkor✓
3. CPellagra✓
4. DBeriberi✓

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

1. AMicronutrients✓
2. BMacronutrients✓
3. CPhytonutrients✓
4. DAntioxidants✓

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

1. AMacronutrients✓
2. BMicronutrients✓
3. CPhytonutrients✓
4. DAntioxidants✓

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. AMacronutrients✓
2. BMicronutrients✓
3. CPhytonutrients✓
4. DAmino acids✓

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

1. APreservatives✓
2. BAntioxidants✓
3. CEmulsifiers✓
4. DStabilizers✓

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

1. AIron✓
2. BIodine✓
3. CZinc✓
4. DMagnesium✓

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

1. AFiber✓
2. BWater✓
3. CProtein✓
4. DVitamin C✓

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

1. ACalcium✓
2. BIron✓
3. CPotassium✓
4. DSodium✓

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

1. ACalcium✓
2. BZinc✓
3. CSodium✓
4. DPotassium✓

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

1. AZinc✓
2. BMagnesium✓
3. CIron✓
4. DSodium✓

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

1. AHigh blood pressure (hypertension)✓
2. BAnemia✓
3. COsteoporosis✓
4. DDiabetes✓

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

1. ADigestion✓
2. BAbsorption✓
3. CExcretion✓
4. DMetabolism✓

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

1. ADigestion✓
2. BAbsorption✓
3. CMetabolism✓
4. DExcretion✓

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

1. ALysine✓
2. BTryptophan✓
3. CLeucine✓
4. DMethionine✓

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

1. AVitamin A✓
2. BVitamin D✓
3. CVitamin C✓
4. DVitamin B12✓

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

1. ARecommended Dietary Allowance (RDA)✓
2. BBasal Metabolic Rate✓
3. CGlycemic Index✓
4. DCaloric Deficit✓

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

1. AMalnutrition (undernutrition)✓
2. BObesity✓
3. CAnorexia✓
4. DDehydration✓

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

1. ABulimia nervosa✓
2. BAnorexia nervosa✓
3. CBinge eating disorder✓
4. DOrthorexia✓

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

1. AMacronutrients✓
2. BTrace minerals (micronutrients)✓
3. CCarbohydrates✓
4. DFats✓

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

1. ASalmonella✓
2. BBotulinum✓
3. CListeria specifically✓
4. DVibrio cholerae✓

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

1. AAflatoxin✓
2. BBotulinum toxin✓
3. CSalmonella toxin✓
4. DE. coli toxin✓

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

1. AAflatoxin✓
2. BBotulinum toxin✓
3. CRicin✓
4. DCyanide✓

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

1. AVegetarian diet (general term)✓
2. BVegan diet strictly✓
3. CCarnivore diet✓
4. DPaleo diet✓

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

1. AVegetarian diet✓
2. BVegan diet✓
3. CPescatarian diet✓
4. DFlexitarian diet✓

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

1. AProtein-energy malnutrition✓
2. BExcess sugar intake✓
3. CExcess fat intake✓
4. DExcess sodium intake✓

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

1. ADietary Approaches to Stop Hypertension✓
2. BDiet And Systemic Health✓
3. CDaily Approach to Sustainable Health✓
4. DDiverse Approach to Sustained Hydration✓

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

1. ADASH diet✓
2. BKetogenic diet✓
3. CMediterranean diet✓
4. DVegan diet✓

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

1. AKetogenic diet✓
2. BMediterranean diet✓
3. CPaleo diet✓
4. DAtkins diet✓

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

1. AVegan diet✓
2. BPescatarian diet✓
3. CFlexitarian diet✓
4. DKetogenic diet✓

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

1. APasteurization✓
2. BHomogenization✓
3. CFermentation✓
4. DIrradiation✓

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

1. APreservatives✓
2. BEmulsifiers✓
3. CStabilizers✓
4. DSweeteners✓

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

1. APreservatives✓
2. BEmulsifiers✓
3. CStabilizers✓
4. DAntioxidant additives✓

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

1. ASalmonella generally✓
2. BListeria✓
3. CE. coli generally✓
4. DBotulinum toxin✓

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

1. APasteurization✓
2. BIrradiation✓
3. CFermentation✓
4. DHomogenization✓

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

1. AAnorexia nervosa✓
2. BBulimia nervosa✓
3. CSimple overeating✓
4. DPica✓

Which food group provides the primary source of dietary fiber

1. AMeats✓
2. BFruits, vegetables, and whole grains✓
3. CDairy products✓
4. DOils and fats✓

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

1. AOmega-3 fatty acids✓
2. BSimple sugars✓
3. CSaturated fats primarily✓
4. DSodium✓

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

1. AWhole foods✓
2. BUltra-processed foods✓
3. COrganic foods✓
4. DRaw foods✓

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

1. ANutrition science (Dietetics)✓
2. BToxicology✓
3. CPharmacology✓
4. DEndocrinology✓

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

1. ADietitian✓
2. BPharmacist✓
3. CToxicologist✓
4. DEndocrinologist✓

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

1. AAll vitamins and some fatty/amino acids✓
2. BOnly carbohydrates✓
3. COnly water✓
4. DOnly sodium✓

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

1. AEssential nutrients✓
2. BNon-essential nutrients✓
3. CMacronutrients specifically✓
4. DTrace nutrients specifically✓

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

1. ACaloric content✓
2. BGlycemic load✓
3. CNutrient density✓
4. DBioavailability✓

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

1. ACaloric content✓
2. BNutrient density✓
3. CBioavailability✓
4. DGlycemic load✓

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

1. AOmega-3 (Alpha-linolenic acid)✓
2. BOmega-9✓
3. CSaturated fatty acids generally✓
4. DTrans 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. ANo universally fixed rule; varies by individual and dietary approach✓
2. BExactly 2 hours always✓
3. CExactly 6 hours always✓
4. DExactly 12 hours always✓

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

1. ACarbohydrates✓
2. BWater✓
3. CFats✓
4. DProteins✓

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

1. AWorld Health Organization (WHO)✓
2. BInternational Monetary Fund✓
3. CWorld Trade Organization✓
4. DUNESCO✓

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

1. AThe cure for scurvy using citrus fruits✓
2. BThe discovery of vitamins broadly✓
3. CThe discovery of protein✓
4. DThe cause of diabetes✓

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

1. ANon-GMO diet✓
2. BVegan diet✓
3. CKetogenic diet✓
4. DPaleo diet✓

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

1. ACalcium (and various other nutrients broadly)✓
2. BOnly sodium✓
3. COnly saturated fat✓
4. DOnly simple sugars✓

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

1. AIron✓
2. BVitamin C exclusively✓
3. CSodium✓
4. DSaturated fat✓

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

1. AFortification✓
2. BEnrichment✓
3. CHomogenization✓
4. DPasteurization✓

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

1. AVitamin K✓
2. BVitamin A✓
3. CVitamin C✓
4. DVitamin D✓

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

1. AFortified foods✓
2. BEnriched foods✓
3. CNaturally rich foods✓
4. DSynthetic foods✓

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

1. AOrganic foods✓
2. BFortified foods✓
3. CProcessed foods generally✓
4. DRaw foods✓

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

1. ASaturated fat✓
2. BUnsaturated fat✓
3. COmega-3 fatty acids specifically✓
4. DTrans fat exclusively✓

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

1. ALess than 10% of total daily calories, ideally less than 5%✓
2. BMore than 30% of total daily calories✓
3. CExactly 50 grams regardless of caloric intake✓
4. DNo specific guideline exists✓

Which general term describes any condition resulting from insufficient vitamin intake

1. AHypervitaminosis✓
2. BHypovitaminosis✓
3. COvernutrition✓
4. DBulimia✓

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

1. AHypervitaminosis✓
2. BHypovitaminosis✓
3. CMalnutrition (undernutrition)✓
4. DAnorexia✓

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

1. AHypervitaminosis A✓
2. BHypovitaminosis A✓
3. CScurvy✓
4. DRickets✓

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

1. AIron and Zinc, alongside B12, due to lower bioavailability from plant sources✓
2. BOnly Vitamin C✓
3. COnly Sodium✓
4. DNo supplements are typically needed✓

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

1. AIntermittent fasting✓
2. BContinuous fasting✓
3. CCaloric restriction generally✓
4. DMeal skipping✓

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

1. ACretinism✓
2. BGoiter (in the mother only)✓
3. CRickets✓
4. DScurvy✓

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

1. AIron✓
2. BPhosphorus✓
3. CSodium✓
4. DPotassium✓

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

1. ACaloric content✓
2. BGlycemic load✓
3. CNutrient density✓
4. DBioavailability✓