Question

Unique features of metabolism of principal organs is/are:

A. Heart: Transport of \(\text{O}_{2}\)

B. Adipose tissue: Rapid movement

C. Kidney: Excretion and gluconeogenesis

D. Brain: Coordination of nervous system

Choose the correct answer from the options given below:

• A. C and B only \
• B. D only \
• C. A and D only \
• D. A only

Hint:

The kidneys are metabolic powerhouses. In addition to filtering waste, they produce glucose (gluconeogenesis) during long periods of fasting.

Answer 1

The Correct Option is A

Step 1: Concept Different organs in mammalian physiology perform specialized metabolic roles to maintain overall metabolic homeostasis.

Step 2: Meaning Evaluating the unique, organ-specific physiological functions listed in the statements.

Step 3: Analysis * Statement A (Heart): The primary function of the heart muscle is to pump blood, not to transport oxygen (which is the job of hemoglobin in red blood cells) $\rightarrow$ Incorrect. * Statement B (Adipose tissue): Adipose tissue functions as a dynamic metabolic hub capable of rapidly mobilizing stored fatty acids into the bloodstream during fasting $\rightarrow$ Correct. * Statement C (Kidney): The kidney filters blood plasma to excrete metabolic waste and plays a key role in systemic gluconeogenesis during prolonged starvation $\rightarrow$ Correct. * Statement D (Brain): While the brain coordinates the nervous system, this describes a broad anatomical function rather than a unique metabolic pathway feature $\rightarrow$ Less relevant to metabolic profiling. Evaluating the combination choices, option (1) which highlights statements C and B covers the most accurate physiological descriptions.

Step 4: Conclusion Thus, option A is selected as the correct combination choice. Final Answer: (A)