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Biology Homeostasis Online Mcqs Test

Malik TahirLast Updated: October 14, 2025

Important Biology Homeostasis Question and Answer

Total Questions:	50
Time Allowed:	25 Minutes
Total Marks:	50
How to Attempt Test:	Please choose the right Option in MCQ-type question.
Test Helpful For:	Biology Test MDCAT Test FPSC/PPSC/SPSC/KPPSC/BPSC/AJKPSC/NTS Biology Interview Question Answer Universities Entrance Test

Biology Homeostasis Practice Test Online With Explanation

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1. Which response occurs when body temperature rises too high?

Pupil dilation

Sweating

Shivering

Vasoconstriction

2. What is the role of the vasa recta?

Filter blood

Maintain salt gradient in medulla

Store waste

Carry oxygen to the kidney

3. Which of the following increases the risk of kidney stones?

Dehydration and high protein intake

Excess vitamin C

Low salt diet

High fiber intake

4. Which condition may result from prolonged kidney failure?

Hyperthyroidism

Jaundice

Asthma

Anemia

5. Which structure in the nephron collects the filtrate after glomerular filtration?

Collecting duct

Loop of Henle

Proximal tubule

Bowman's capsule

6. What leads to the formation of kidney stones?

High vitamin D

Cold temperature

Acid reflux

Dehydration

7. Which hormone helps in water reabsorption in kidneys?

ADH

Glucagon

Estrogen

Insulin

8. Which nitrogenous compound is the most toxic?

Ammonia

Uric acid

Creatinine

Urea

9. What is thermoregulation?

Blood pressure control

Maintenance of internal body temperature

Production of hormones

Regulation of blood sugar

10. Which component is most abundant in normal urine?

Red blood cells

Water

Glucose

Protein

11. Which of the following causes kidney stones?

Crystal formation of salts like calcium oxalate

Excessive fat

Low blood pressure

Vitamin C deficiency

12. What is the function of the distal convoluted tubule?

Filter blood

Regulate pH and ion balance

Concentrate bile

Absorb nutrients

13. Which compound is least likely to be found in normal urine?

Water

Sodium

Glucose

Urea

14. Which part of the nephron plays a major role in selective reabsorption?

Collecting duct

Proximal convoluted tubule

Loop of Henle

Bowman's capsule

15. What is the function of the loop of Henle?

Blood filtration

Glucose digestion

Reabsorption of water and salts

Hormone production

16. Which of the following is NOT a nitrogenous waste?

Glucose

Ammonia

Creatinine

Urea

17. Which of the following helps maintain acid-base balance in the blood?

Tubular secretion

Vasoconstriction

ADH

Glomerular filtration

18. Which of the following is a common symptom of kidney failure?

Increased lung function

Frequent sneezing

Sweating

Swelling due to fluid retention

19. What do peritubular capillaries primarily do?

Filter blood

Absorb oxygen

Produce urine

Reabsorb water and nutrients

20. Which of the following processes occurs first in urine formation?

Osmoregulation

Glomerular filtration

Tubular secretion

Selective reabsorption

21. Which of the following can result from long-term kidney failure?

Faster digestion

High oxygen levels

Increased urination

Bone demineralization

22. Which of the following substances is actively secreted into the nephron?

Water

Hydrogen ions

Glucose

Sodium

23. What is the primary nitrogenous waste in humans?

Ammonia

Uric acid

Urea

Creatinine

24. What stimulates ADH release?

High blood pressure

Low blood volume or high plasma osmolarity

Low heart rate

High water intake

25. What structure delivers blood to the glomerulus?

Renal vein

Efferent arteriole

Peritubular capillary

Afferent arteriole

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26. How is kidney failure commonly treated?

Vaccination

Dialysis or kidney transplant

Chemotherapy

Antibiotics

27. Which capillary bed surrounds the renal tubule and assists in reabsorption?

Pulmonary capillaries

Glomerular capillaries

Peritubular capillaries

Coronary capillaries

28. Which part of the nephron dips into the medulla of the kidney?

Collecting duct

Distal tubule

Proximal tubule

Loop of Henle

29. Why is the medulla of the kidney important?

It concentrates urine

It stores glucose

It produces bile

It filters blood

30. Which condition is caused by accumulation of urea in the blood?

Hyperglycemia

Hypertension

Uremia

Anemia

31. What is the main purpose of homeostasis?

Controlling external temperature

Enhancing digestion

Maintaining internal stability

Increasing metabolism

32. Which of the following is a nitrogenous waste product excreted in urine?

Oxygen

Bicarbonate

Urea

Glucose

33. Which part of the brain controls thermoregulation?

Cerebrum

Hypothalamus

Medulla

Cerebellum

34. Which of these would be abnormal in urine?

Sodium

Glucose

Water

Urea

35. Which capillary bed is involved in the filtration process?

Vasa recta

Glomerular capillaries

Peritubular capillaries

Alveolar capillaries

36. What does the presence of proteins in urine usually indicate?

Dehydration

Kidney damage or disease

Normal kidney function

Diabetes

37. Which process removes drugs and toxins from the blood?

Tubular secretion

Glomerular filtration

Selective reabsorption

Peristalsis

38. Which of the following describes the kidney’s role in osmoregulation?

Produces bile

Regulates blood pressure

Balances water and salt levels

Filters pathogens

39. Which hormone increases urine concentration by retaining water?

ADH

Insulin

Thyroxine

Glucagon

40. Which structure collects the final urine from nephrons?

Ureter

Collecting duct

Distal tubule

Loop of Henle

41. What causes the pain experienced during kidney stones?

Gas formation

Infection of the bladder

Crystals moving through narrow ureters

Acid reflux

42. What does dialysis do?

Produces bile

Replaces kidney function by filtering blood

Filters food in the stomach

Improves digestion

43. Which organ is responsible for converting ammonia into urea?

Liver

Spleen

Pancreas

Kidney

44. What structure in the kidney performs glomerular filtration?

Ureter

Glomerulus

Loop of Henle

Collecting duct

45. Which is a method used by the body to conserve heat?

Increased breathing

Vasoconstriction

Urination

Sweating

46. What is the primary function of tubular secretion?

Eliminating additional wastes like H+ and drugs

Removing glucose

Reabsorbing proteins

Adding more water

47. Which of the following substances is reabsorbed during selective reabsorption?

Urea

Creatinine

Glucose

Ammonia

48. What is the function of the renal pelvis?

Produces urine

Stores urine

Filters blood

Transports urine to the ureter

49. What is the function of glomerular capillaries?

Perform filtration

Secrete hormones

Reabsorb nutrients

Store waste

50. What is the function of the ureter?

Filter blood

Reabsorb water

Store urine

Transport urine from kidney to bladder

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Malik TahirLast Updated: October 14, 2025

19 Comments

Rabia says:

August 11, 2022 at 8:22 pm

I got 24 /25

Rabia says:

August 11, 2022 at 8:22 pm

I got 24 out of 25

Ali Ahmed says:

January 12, 2022 at 2:35 pm

I want study in kips

FATIMA KHAN says:

December 19, 2021 at 1:17 pm

These questions are taken from punjab textbook board??

Alina Qazi says:

October 8, 2021 at 3:12 pm

What is face back mechanism?
Please tell the book where there’s written about face back mechanism?

Sajjad Baloch says:

September 13, 2021 at 9:13 am

Best efforts dear

Sanan farzand says:

August 1, 2021 at 1:20 pm

Good thing

Alimardan says:

February 27, 2021 at 9:47 pm

PRE medical

Abdullah munir says:

October 18, 2020 at 7:10 pm

no preparation, Fsc student and 80% marks i am such a dumb student :<

tanya amir says:

September 20, 2020 at 8:34 pm

i got 92 without even reading the chapter

AbuHuraira says:

August 21, 2020 at 1:27 pm

Allah Tera Shukar ha

zafar mirza says:

July 3, 2020 at 5:35 pm

wow it really a good website for all of us for preperation
i got 96 percent

Syeda Shereen Gardazi says:

July 15, 2017 at 11:12 am

Waoooo i got 96% , its really a good way to learn , .

1. Asad says:
  
  October 22, 2018 at 2:22 pm
  
  waah nice
  
  1. AbuHuraira says:
    
    August 21, 2020 at 1:26 pm
    
    Allah tera Shukar ha
    
Nayaab says:

March 10, 2017 at 3:14 pm

100% Unbeatable.!!!Not too surprising as I always get Lol :p
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shabir ahmed says:

May 26, 2016 at 4:15 pm

it was my frst time to,,, no preparation

1. Ahmar says:
  
  July 16, 2020 at 11:57 pm
  
  same bruh.Everyone bragging off about their scores lol
  
Hamza jutt says:

April 19, 2016 at 10:25 pm

Yo got 92% thanks gotest

Biology Homeostasis Online Mcqs Test

Important Biology Homeostasis Question and Answer

Biology Homeostasis Practice Test Online With Explanation

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Malik Tahir

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