CH-15 Homeostasis Leave a Comment / By abdulslambsn@gmail.com / October 6, 2025 Welcome To Your Quiz "CH-15 Homeostasis" Click on "Start Quiz" To Continue... 1. The excretory system of Planaria called: Metanephridium Protonephridium Nephrone Nephridium None 2. In urea cycle, one molecule of Amonia and one molecule of co2>/sub> combine with one molecule of ornithine to form: Urea Arginine Arginosuccinate Citrulline None 3. Malpighian tubules are excretory organs found in: Vertebrate Annelids Insects Flatworms None 4. The vertebrate liver function in all the following regulatory processes except: Detoxification of harmful chemicals Energy reserves in the formation of a glycogen Production of nitrogenous waste Osmoregulation by variable excretion of salts None 5. Urea can be eliminated with quantity of water as compared to ammonia: 1/10 1/20 1/5 1/50 None 6. Movement ground squirrel to burrows in midday heart is an: Physiological adaptation Structural adaptation Behavioral adaptation Morphological and physiological adaptations None 7. Humming bird belongs to a category called: Heterothem Poikilotherms Ectothem Endotherm None 8. Reptile: Protein Ectotherm Nucleic acid ADH None 9. Dialyzer: 15% Kidney machine Adrenal cortex Presence of sweat gland None 10. Nephron: Passive loss of water from gills Kidney Large amount of hypotonic contain little salt Body fluid isotonic to external environment None 11. Bile: Liver Body fluid isotonic to external environment Kidney Large amount of hypotonic urine contain little salt None 12. Uric acid: Cockroach Loop of Henle Bowman capsule Hypothalamus None 13. Homeostasis is the process of maintaining a constant environment despite conditions: External internal Internal external Both A and B None of these None 14. Which of the following activity is regulated by homeostasis? Temperature Water balance Blood sugar level All A,B and C None 15. A cell is placed in a solution and swells. This solution is: Isotonic to cell Hypertonic to cell Hypotonic to cell None of these None 16. A cell whose internal salt concentration is 0.3 per liter is placed in a solution having salt concentration 0.5 per liter. The solution is: Isotonic to the cell Hypotonic to the cell Hypertonic to cell None of these None 17. Plasmolysis of a human red blood cell would occur if the cell were: In an isotonic solution In a hypertonic solution In a hypotonic solution None of the above None 18. The tendency of a solution to take up water when separated from pure water by a selectively permeable membrane is called: Osmotic pressure Turgor pressure Diffusion Pressure deficit Water potential None 19. The entry of water from salty soil into roots of halophytes takes place because the root of halophytes develop: High water potential Low osmotic pressure Low water potential All of these None 20. Animals that are not isotonic with their environment and have developed mechanisms to regulate their internal salute and water concentrations are: Osmoconformers Osmoregulators Thermoregulators Both A and B None 21. An increase in blood sugar level triggers the release of the hormone in the pancreas the hormone insulin b the pancreas, the hormone insulin lowers blood sugar level restoring the body to its original blood glucose level by converting glucose to glycogen. This is an example of: Positive feed back Negative feed back Homeostatic imbalance None of these None 22. To hags fishes, sea water is: Isotonic Hypotonic Hypertonic None of these None 23. Which one of the following has medium toxicity? Ammonia Urea Uric acid Water None 24. The internal opening of the metanephridium is known as: Nephrostoms Nephridiopore Excretory Pore All A,B and C None 25. In humans, excess nitrogen is eliminated from the body by mainly converting it to: Urea Uric acid Ammonia Amine phosphate None 26. From the distal convoluted tubule, filtrate will be carried to the: Renal Corpuscle Collecting duct Nephron loop Proximal convoluted tubule None 27. Hormone regulates the transfer of sodium from the nephron to the blood: Parathormone Anti-diuretic Aldosterone Vasopression None 28. Separation of amino acid into amino and carboxyl group is known as: Animation Excretion Deamination Egestion None 29. Which of the following is not structure of kidney: Cortex Medulla Pelvis Urethra None 30. Mammals maintain their body temperature within a range of: 25 ⁰C to 35 ⁰C 30 ⁰C to 40 ⁰C 36 ⁰C to 43 ⁰C 36 ⁰C to 38 ⁰C None 31. These are animals capable of varying degrees of endothermic heat production, but they generally do not regulate body temperature within as narrow a range as endotherms: Ectotherms Poikilotherms Hearotherms None of these None 32. Dialysis cleans the blood by: An artificial kidney Filtering it within abdomen Removing glucose from blood Both A and B None 33. Percentage of kidney stones composed of calcium oxalate phosphate: 5% 20% 70% 90% None 34. It is a cyclic process of in the enzymatic reactions which operates in the liver cells as a result of which urea is formed from ammonia, carbondioxide NH₂ group: Ornithine cycle Citruline cycle Arginine cycle All of these None 35. Ph of human urine is: 7.4 3.5 5.00 8.00 None 36. Daily urine output of man is: 1-2 liters 1-3 liters 1-4 liters 1-5 liters None 37. The number of nephrons in ONE kidney of man is: 4 million 2 million 8 million 1 million None 38. Cholesterol is excreted in the: Sebum Bile Sweat Both A and B None 39. About % of kidney stones composed of uric acid: 5% 20% 70% 90% None 40. Birds maintain their body temperature within a range of: 25⁰C to 35⁰C 30⁰C to 40⁰C 41⁰C to 43⁰C 36⁰C to 38⁰C None 1 out of 8 Thanks For Taking This Quiz - Please See Your Answers/Results Below After Entering Your Name & Email... Name Email Time's up
