MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is not an excretory waste of liver? |
| A. | Cholesterol |
| B. | Bilirubin |
| C. | CO<sub>2</sub> |
| D. | Vitamins |
| Answer» D. Vitamins | |
| 2. |
Which of the following organs does not help in the elimination of excretory wastes? |
| A. | Skin |
| B. | Lungs |
| C. | Liver |
| D. | Heart |
| Answer» E. | |
| 3. |
What is the myogenic mechanism of the kidney? |
| A. | As blood pressure increases, arteries get constricted |
| B. | As blood pressure decreases, arteries get dilated |
| C. | As blood pressure increases, efferent renal arteriole dilates |
| D. | As blood pressure increases, afferent renal arteriole dilates |
| Answer» D. As blood pressure increases, afferent renal arteriole dilates | |
| 4. |
Juxtaglomerular cells are the modifications of which of the following? |
| A. | Smooth muscle cells |
| B. | Skeletal muscle cells |
| C. | Adipocytes |
| D. | Areolar cells |
| Answer» B. Skeletal muscle cells | |
| 5. |
Macula densa of DCT are sensitive to magnesium ions. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
What happens when there is an increase in sodium ions in the urine? |
| A. | Increase in blood pressure |
| B. | Increase in blood volume |
| C. | A decrease in blood pressure |
| D. | A decrease in the solubility of sodium ions |
| Answer» D. A decrease in the solubility of sodium ions | |
| 7. |
What happens due to the increase of sodium ions in the blood? |
| A. | Increase in blood pressure |
| B. | A decrease in blood pressure |
| C. | Increase in the solubility of nitrogen |
| D. | A decrease in solubility of sodium ions |
| Answer» B. A decrease in blood pressure | |
| 8. |
Hyposecretion of ADH causes which of the following diseases? |
| A. | Diabetes mellitus |
| B. | Diabetes insipidus |
| C. | Addison s disease |
| D. | Simmonds s disease |
| Answer» C. Addison s disease | |
| 9. |
Which of the following is called a salt retaining hormone? |
| A. | ANF |
| B. | ADH |
| C. | Oxytocin |
| D. | Aldosterone |
| Answer» E. | |
| 10. |
What are diuretics? |
| A. | Substances which increase the urine formation |
| B. | Substances which decrease the urine formation |
| C. | Substances which increase the glucose content in the urine |
| D. | Substances which change the colour of the urine |
| Answer» B. Substances which decrease the urine formation | |
| 11. |
The collecting duct plays no role in secretion. |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
Which of the following segments can allow the passage of urea through them? |
| A. | Collecting duct |
| B. | PCT |
| C. | DCT |
| D. | Henle s loop |
| Answer» B. PCT | |
| 13. |
The collecting duct extends from the cortex of the kidney to which of the following parts? |
| A. | Outer parts of medulla |
| B. | Inner parts of medulla |
| C. | Into the medullary pyramids |
| D. | Into the renal pelvis |
| Answer» C. Into the medullary pyramids | |
| 14. |
Which of the following segments are responsible for maintaining the sodium-potassium balance? |
| A. | Ascending loop of Henle |
| B. | Descending loop of Henle |
| C. | DCT |
| D. | Glomerulus |
| Answer» D. Glomerulus | |
| 15. |
In which of the following segments, conditional reabsorption of sodium ions take place? |
| A. | PCT |
| B. | DCT |
| C. | Collecting duct |
| D. | Henle s loop |
| Answer» C. Collecting duct | |