1. Which of the following is an excretory waste? A. feces B. bacteria C. urea D.
ID: 3482243 • Letter: 1
Question
1. Which of the following is an excretory waste? A. feces B. bacteria C. urea D. All of the choices are correct 2. Which of the following is NOT a homeostatic function of the kidneys? A. maintenance of acid-base and water-salt balances B. elimination of digestive wastes C. excretion of metabolic wastes D. maintenance of blood pressure 3. Which of the following is a function of the urinary system? A. excretion of metabolic wastes B. secretion of hormones C. maintenance of acid-base balance D. All of the choices are correct 4. Urea is a by-product of metabolism. A. glucose B. amino acid C. fatty acid D. vitamin 5. Which of the following is a nitrogenous waste? A ammonia B. urea C. creatinine D. All of the choices are correct. 6. Uric acid is a by-product of metabolism. A. glucose B. nucleotide C. amino acid D. creatine phosphateExplanation / Answer
1. C. Urea.
Urea is an excretory product of the kidneys.
Feces is a product of egestion, and not considered as an excretory product. Bacteria are living organisms.
2. B. elimination of digestive wastes.
Other options describe the homeostatic functions of kidneys that it maintains the composition of blood, and nitrogenous metabolic wastes are excreted by the kidneys.
3. D. All of the above.
All the given functions are performed by the kidneys.
4. B. amino acid.
Urea is the end product of amino acid metabolism that is released into the blood and is excreted by the kidneys.
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