Science
easyQ. No. 16192
How much energy is provided by one gram of dietary fat?
Last Updated:
A4 kcal
B7 kcal
C9 kcal
D12 kcal
Correct Answer: 9 kcalYour Answer: C
Explanation
Correct answer: 9 kcal. One gram of fat supplies approximately 9 kilocalories, making fat the most energy-dense macronutrient. Carbohydrate and protein each provide about 4 kcal per gram, while alcohol provides about 7 kcal but is not an essential nutrient. Four kcal applies to carbohydrate and protein; seven applies to alcohol; twelve is not the standard physiological fuel value.
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Nutrition FAQs
Common questions and clear answers for this topic.
What nutrients does the human body need?
The body needs carbohydrates, proteins, fats, vitamins, minerals and water. Dietary fibre also supports digestive and metabolic health. A balanced diet supplies these components in amounts suited to a person’s age, activity and physiological needs.
Which nutrition facts are commonly tested in competitive exams?
Competitive exams commonly test nutrient functions and sources, energy values, vitamin and mineral deficiencies, fat-soluble and water-soluble vitamins, balanced diets, and protein-energy malnutrition such as kwashiorkor and marasmus.
How should nutrient-deficiency questions be revised?
Learn each nutrient as a four-part link: its major dietary sources, principal function, characteristic deficiency and important excess effect. This method makes similar options easier to distinguish.