Which of the following organ is responsible for body metabolism?
Correct answer: B. Liver
- A. Kidney
- B. Liver
- C. Lungs
- D. Heart
Explanation
The liver is a major metabolic organ, carrying out carbohydrate, lipid, and protein metabolism as well as detoxification and synthesis of important substances. Students may choose the kidney because it regulates body chemistry, but its main role is filtration and urine formation rather than overall metabolism.
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About Excretion
Excretion removes metabolic wastes such as carbon dioxide, urea and excess salts, and differs from egestion, which removes undigested food. Questions cover kidney structure, nephron ultrafiltration, selective reabsorption and urine formation, along with the excretory roles of the lungs, skin and liver in maintaining homeostasis.
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