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Quizzes > Health & Medicine

Test yourself with our calories quiz on vitamins and nutrition

Quick, free nutrition knowledge quiz. Instant results and tips.

Editorial: Review CompletedCreated By: Abraham VivianUpdated Aug 28, 2025
Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
Paper art fruits vegetables vitamin pills calorie icons on coral background for nutrition quiz banner

This quiz helps you check calorie counts in common foods and learn what key vitamins do. See where you're strong, get instant results, and pick up simple tips as you go. For more practice, try our nutrition facts quiz, basic nutrition quiz, or nutrition knowledge quiz.

How many calories are in one gram of carbohydrates?
7 calories
2 calories
4 calories
9 calories
Carbohydrates provide about 4 calories per gram, making them a primary energy source from foods like grains and fruits. This energy density is used universally for nutritional labeling and diet planning. Understanding this value helps you balance macro intake for health goals.
How many calories are in one gram of fat?
4 calories
7 calories
2 calories
9 calories
Fats are the most energy-dense macronutrient, providing about 9 calories per gram. This high caloric value means fats contribute significantly to overall energy intake. It's important to moderate fat intake for balanced nutrition.
Which vitamin is fat-soluble?
Vitamin B1
Vitamin B12
Vitamin C
Vitamin D
Vitamin D is one of the four fat-soluble vitamins (A, D, E, and K) that are absorbed with dietary fats. It requires fat for proper absorption and is stored in body tissues. Fat-soluble vitamins can accumulate, so intake should be monitored.
What is the primary macronutrient providing energy in olive oil?
Vitamins
Fats
Proteins
Carbohydrates
Olive oil is composed mainly of fats, particularly monounsaturated fatty acids, which provide about 9 calories per gram. It contains negligible amounts of protein or carbohydrates. This makes it a concentrated energy source and beneficial in moderation.
Which vitamin is classified as water-soluble?
Vitamin D
Vitamin C
Vitamin K
Vitamin A
Vitamin C is water-soluble, meaning it dissolves in water and is not stored extensively in the body. Excess amounts are excreted in urine, requiring regular dietary intake. Water-soluble vitamins include the B-complex vitamins and vitamin C.
What does the term "Calorie" on food labels actually measure?
Energy to boil 1 L of water
Energy to raise 1 g of water by 1°C
Energy to raise 1 kg of water by 1°C
Energy to raise 100 g of water by 1°C
The Calorie (capital C) on food labels is actually a kilocalorie, defined as the energy needed to raise the temperature of one kilogram of water by one degree Celsius. This standard is used globally to quantify food energy. Understanding this helps interpret nutrition information correctly.
Which vitamin is essential for healthy vision?
Vitamin K
Vitamin B6
Vitamin C
Vitamin A
Vitamin A supports the production of rhodopsin, a pigment in the retina that enables low-light vision. Deficiency can lead to night blindness and other eye issues. Dietary sources include carrots, sweet potatoes, and leafy greens.
Deficiency of which vitamin causes scurvy?
Vitamin C
Vitamin B12
Vitamin D
Vitamin A
Scurvy is caused by a lack of vitamin C, which is essential for collagen synthesis and wound healing. Symptoms include bleeding gums, bruising, and joint pain. Regular intake of fruits and vegetables prevents this deficiency.
Basal metabolic rate (BMR) accounts for approximately what percent of daily energy expenditure in most adults?
10%
60 - 75%
30%
50%
BMR represents the energy used for basic physiological functions at rest and accounts for about 60 - 75% of daily calories burned. This includes heart function, breathing, and maintaining body temperature. Measuring BMR helps in tailoring calorie intake for weight management.
Excess dietary calories are primarily stored in the body as what?
Amino acids
Glycogen
Muscle tissue
Fat tissue
When calorie intake exceeds energy expenditure, the body converts excess calories into triglycerides stored in fat cells. Glycogen stores are limited and fill quickly, so surplus energy becomes fat. Understanding this helps explain weight gain from prolonged calorie surplus.
Which vitamin enhances calcium absorption in the intestines?
Vitamin C
Vitamin D
Vitamin B12
Vitamin K
Vitamin D upregulates calcium transport proteins in the small intestine, improving calcium uptake from the diet. Without adequate vitamin D, calcium absorption declines, affecting bone health. Sun exposure and dietary sources like fatty fish help maintain levels.
The Recommended Daily Allowance (RDA) for vitamin C for adult men is approximately how many milligrams?
75 mg
50 mg
30 mg
90 mg
The RDA for adult men is set at 90 mg of vitamin C per day to support antioxidant functions and collagen production. Smokers require an additional 35 mg due to increased oxidative stress. Adequate intake prevents deficiency diseases like scurvy.
How many calories are provided by one gram of alcohol?
9 calories
4 calories
7 calories
11 calories
Alcohol provides about 7 calories per gram, making it more energy-dense than carbohydrates and protein but less than fat. These calories are metabolized differently and can contribute to weight gain if consumed in excess. Awareness of alcohol's energy content helps manage intake.
Deficiency of niacin (vitamin B3) leads to which disease?
Rickets
Scurvy
Beriberi
Pellagra
Pellagra is characterized by the three D's: dermatitis, diarrhea, and dementia, and results from niacin deficiency. Niacin is found in meats, grains, and legumes. Fortification and balanced diets prevent this condition.
Which vitamin is required for collagen synthesis and acts as an antioxidant?
Vitamin A
Vitamin E
Vitamin K
Vitamin C
Vitamin C is a cofactor for enzymes that hydroxylate proline and lysine during collagen formation. It also serves as an antioxidant, protecting cells from free radical damage. Citrus fruits and peppers are rich sources.
Approximately how many calories are stored in one pound of body fat?
3,500 calories
5,000 calories
2,500 calories
7,000 calories
One pound of body fat is roughly equivalent to 3,500 calories. This estimate helps in planning weight loss: a 500-calorie daily deficit typically results in about a pound of weight loss per week. Individual metabolism may vary.
Deficiency of which vitamin causes beriberi?
Vitamin B12 (Cobalamin)
Vitamin B2 (Riboflavin)
Vitamin B6 (Pyridoxine)
Vitamin B1 (Thiamine)
Beriberi results from a lack of thiamine (vitamin B1), essential for carbohydrate metabolism and neuronal function. Symptoms include neuropathy, muscle weakness, and cardiovascular issues. Enrichment of grains has greatly reduced its incidence.
Beta-carotene is a provitamin for which vitamin?
Vitamin A
Vitamin C
Vitamin D
Vitamin E
Beta-carotene is converted by the body into retinol, an active form of vitamin A. It's abundant in colorful fruits and vegetables like carrots and sweet potatoes. Provitamin A compounds are important for safe, regulated vitamin A synthesis.
Excess intake of which vitamin is most likely to cause hypercalcemia?
Vitamin C
Vitamin K
Vitamin B6
Vitamin D
Vitamin D toxicity can lead to elevated calcium levels in the blood (hypercalcemia), causing nausea, weakness, and kidney issues. This occurs when supplements greatly exceed recommended doses. Monitoring intake from all sources is important.
Which vitamin acts as a potent antioxidant protecting cell membranes?
Vitamin A
Vitamin K
Vitamin E
Vitamin B12
Vitamin E, particularly alpha-tocopherol, protects polyunsaturated fatty acids in cell membranes from oxidative damage. It works synergistically with other antioxidants like vitamin C. Deficiency is rare but can affect nerve and muscle function.
Which vitamin is synthesized by gut bacteria in the human large intestine?
Vitamin D
Vitamin K
Vitamin C
Vitamin B2
Certain strains of gut bacteria produce vitamin K2, which contributes to overall vitamin K status and supports blood clotting and bone health. While dietary sources include leafy greens and fermented foods, gut synthesis adds to the total. Antibiotics can disrupt this production.
Which stored water-soluble vitamin can accumulate in the body primarily in the liver and be released slowly?
Vitamin B12
Vitamin C
Vitamin B9 (Folate)
Vitamin B6
Vitamin B12 is unique among water-soluble vitamins because it can be stored in the liver for months to years. This storage capacity helps prevent deficiency even if dietary intake is low for a period. Other water-soluble vitamins require more frequent consumption.
Dietary thermogenesis (the thermic effect of food) accounts for approximately what percent of total daily energy expenditure?
5%
20%
10%
30%
The thermic effect of food refers to the energy required for digestion, absorption, and metabolism, and it typically represents about 10% of daily energy expenditure. Protein has a higher thermic effect compared to fats and carbohydrates. Recognizing this helps in understanding total energy balance.
The vitamin D receptor forms a heterodimer with which nuclear receptor to regulate gene expression?
RXR
PPAR
HNF4
LXR
The vitamin D receptor (VDR) partners with the retinoid X receptor (RXR) to bind DNA response elements and regulate transcription of target genes. This heterodimerization is essential for vitamin D's biological actions. Disruption can impair calcium homeostasis and immune function.
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Study Outcomes

  1. Understand Daily Calorie Needs -

    By completing our calorie quiz, you will recognize recommended calorie ranges for adults based on activity level and lifestyle.

  2. Estimate Food Calorie Counts -

    You will learn to gauge the calorie content of everyday foods, improving your ability to make informed dietary choices.

  3. Identify Essential Vitamins -

    After the quiz, you will be able to list key vitamins, their functions, and why they are vital for overall health.

  4. Differentiate Vitamin Sources -

    You will distinguish between natural and fortified vitamin sources, empowering smarter ingredient and supplement decisions.

  5. Apply Nutrition Insights -

    Use your quiz results to craft balanced meal plans and set realistic health goals tailored to your nutritional needs.

Cheat Sheet

  1. Basal Metabolic Rate (BMR) -

    Your BMR is the number of calories your body burns at rest and sets the foundation for calorie needs in a calorie quiz or nutrition quiz setting. Use the Mifflin - St Jeor equation (Women: BMR = 10×weight(kg)+6.25×height(cm)−5×age(yr)−161; Men: BMR = 10×weight(kg)+6.25×height(cm)−5×age(yr)+5) as recommended by the NIH for accurate estimates and practice sample calculations.

  2. Macronutrient Caloric Values -

    Each gram of carbohydrate and protein yields 4 calories, fats provide 9 calories per gram, and alcohol contains 7 calories. A handy mnemonic for your food calorie quiz is "CP4 F9 A7" to recall Carbs(4), Protein(4), Fat(9), Alcohol(7).

  3. Energy Density & Satiety -

    Foods low in energy density (like vegetables and broth-based soups) fill your stomach with fewer calories, which is key knowledge for a nutrition quiz. Harvard T.H. Chan researchers show that increasing high-volume, low-calorie foods helps manage hunger without overconsuming calories.

  4. Fat-Soluble vs Water-Soluble Vitamins -

    Fat-soluble vitamins (A, D, E, K) store in body tissues, while water-soluble vitamins (B-complex and C) must be replenished regularly through diet. A memory trick for your vitamin quiz is ADEK for fat-solubles and "Be C Wise" for B and C vitamins. The NIH Office of Dietary Supplements notes that understanding absorption and daily requirements prevents deficiencies and toxicities.

  5. Interpreting Nutrition Labels -

    Reading a nutrition label correctly helps you answer questions in a food calorie quiz by focusing on serving size, calories per serving, and % Daily Value (%DV). The FDA recommends starting with the servings-per-container line to avoid underestimating intake and then checking macronutrients and vitamins listed. Practicing with real labels from snacks or beverages makes you confident during a health and nutrition quiz.

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