5
Which of the following are true for energy metabolism?
(A) . The burning of 1 g of hydrogen produces over 4 times as much heat as in case of carbon.
(B) . The large differences in the efficiency of utilization of ME are primarily due to wide variations in the energy losses as HI
(C) . Net energy is easier and cheaper to obtain than metabolizable energy.
(D) . RQ below 0.7 have been observed in fasting.
(©). Gross energy of methane is 9.45 kcal/L.
Choose the correct answer from the options given below:
EXPLANATION
Energy Partitioning, Calorimetry, Gross, Dige
- Principles of Animal Bioenergetics:
- Heat of combustion of hydrogen is $\approx 34.2\text{ kcal/g}$, whereas carbon is $\approx 7.8\text{ kcal/g}$—over 4 times higher (True).
- Wide variations in the efficiency of utilizing Metabolizable Energy (ME) for different physiological functions ($k_m, k_l, k_g$) stem from differences in Heat Increment (HI) (True).
- Net Energy (NE) determination requires total animal calorimetry or comparative slaughter, making it significantly more difficult and expensive than ME determination (Statement C is False).
- Respiratory Quotients (RQ) below $0.70$ are observed during prolonged starvation due to ketogenesis and gluconeogenesis (True).
- Gross energy of combustible methane ($CH_4$) gas is $\approx 9.45 - 9.5\text{ kcal/L}$ ($13.3\text{ kcal/g}$) (True).
- nalysis:
- Statements (A), (B), (D), and (E) are true. Hence, Option 3 is correct.
Explanation not matching this question?
क्या व्याख्या इस प्रश्न से मेल नहीं खा रही?
Report
Want to practice this paper in exam conditions?
क्या आप परीक्षा जैसे माहौल में अभ्यास करना चाहते हैं?
Test yourself in 5-question batch format with timer and hidden answers.
5-प्रश्नों के बैच फॉर्मैट, टाइमर और छिपे उत्तरों के साथ खुद को परखें।
Start Practice Mode →
प्रैक्टिस टेस्ट मोड शुरू करें →