Question

When the carbohydrates and fats are metabolised, the energy is liberate
D. Reason: As the fat metabolism, produced more energy than carbohydrates.

• A. Both (A) and (R) are correct and (R) is the correct explanation of (A)
• B. Both (A) and (R) are correct but (R) is not the correct explanation of (A)
• C. (A) is correct but (R) is not correct
• D. (A) is not correct but (R) is correct

Hint:

Always ensure to distinguish between supportive details and explanations when evaluating such questions.

Answer 1

The Correct Option is A

Step 1: Concept
During the metabolism of carbohydrates and fats, energy is released through various biochemical pathways. The primary pathways for these are glycolysis and beta-oxidation respectively.

Step 2: Meaning
The statement "When the carbohydrates and fats are metabolised, the energy is liberated" means that during the breakdown of these macromolecules in cells, energy is produced as a result of their oxidation processes.

Step 3: Analysis
Given the reason: "As the fat metabolism produces more energy than carbohydrates," we need to evaluate if this statement supports the main assertion. In terms of energy yield per gram: Carbohydrates typically provide about 4 kcal/g. Fats generally offer approximately 9 kcal/g. This indicates that fats indeed produce more energy compared to carbohydrates on a per gram basis due to their higher caloric content. The main assertion (A) is correct as both carbohydrates and fats do liberate energy upon metabolism. The reason provided (R) correctly states the comparative yield of fat over carbohydrate, but it does not serve as an explanation for the general statement about energy liberation from both macronutrients.

Step 4: Conclusion
Therefore, the given reason supports the main assertion that energy is liberated during the metabolism of carbohydrates and fats, making both statements true with (R) being a supporting detail rather than an explanation. Final Answer: (A)