1. Which of the following are the components of homeostatic mechanism:
a. receptors, regulators, effectors
b. receptors, integrators, effectors
c. sensors, brain, effectors
d. all of these✅
2. In case of over-heating, the body temperature is regulated by ______?
a. more sweating and more urination
b. more sweating and less urination✅
c. less sweating and more urination
d. less sweating and less urination
3. An animal that warms itself mainly by absorbing heat from its surrounding is known as ______?
a. homeotherm
b. ectotherm✅
c. endotherm
d. none of them
4. Which of the following animals is not endothermic?
a. salamander✅
b. great white shark
c. polar bear
d. butterfly
5. The birds excrete ______?
a. ammonia
b. urea
c. uric acid✅
d. acetic acid
6. Each kidney of a human being is weighing about ______ grams?
a. 140
b. 150
c. 130
d. 150✅
7. Which of the following represent the bile pigments?
a. bilirubin
b. biliverdin
c. hemoglobin
d. both a and b✅
8. Kidney health is described in terms of ______?
a. the number of kidney stones
b. rate of filtration✅
c. water retention
d. blood clot
9. Why is there no glucose present in the filtrate in the distal tubule of nephron?
a. its molecules are too large to pass across the basement membrane
b. it is removed by osmosis from the tubule
c. it is passively absorbed by the cell lining the descending loop of Henle
d. it is actively absorbed by the proximal tubule cells✅
10. Shifts in water-solute balance are managed primarily by ______?
a. respiratory system
b. urinary system
c. endocrine adjustments✅
d. circulatory system
11. Which is the most important mechanism for water loss from the body?
a. excretion in urine✅
b. sneezing
c. sweating
d. elimination in feces
12. The least toxic excretory product is:
a. ammonia
b. urea
c. uric acid✅
d. fatty acid
13. Malpighian tubules convert nitrogenous waste into:
a. urine
b. ammonia
c. uric acid✅
d. urea
14. The number of cortical nephrons are ______?
a. 70 to 80%✅
b. 80 to 90%
c. 60 to 70%
d. 60 to 80%
15. The major and immediate nitrogenous waste product of protein metabolism is:
a. urea
b. uric acid
c. creatinine
d. ammonia✅
16. Which of the following is a homeothermic animal?
a. uromastyx
b. salamander
c. sea horse
d. kangaroo✅
17. Lithotripsy is a technique to:
a. remove kidney stones without surgery✅
b. remove kidney stone with surgery
c. treat kidney with medicines
d. remove appendix
18. The glucose is reabsorbed by the:
a. proximal convoluted tubule of nephron✅
b. distal convoluted tubule of nephron
c. glomerulus
d. Bowman’s capsule
19. When the kidney fails to form urine the condition is called:
a. nephritis
b. nephrosis
c. ptosis
d. anuria✅
20. Which of the following is isotonic to the surrounding sea water ?
a. bony fishes
b. shark
c. hag fish
d. both b and c✅
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