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 structure in the nephron collects the filtrate after glomerular filtration?

Proximal tubule

Collecting duct

Loop of Henle

Bowman's capsule

2. What does dialysis do?

Improves digestion

Replaces kidney function by filtering blood

Filters food in the stomach

Produces bile

3. Why is the medulla of the kidney important?

It produces bile

It filters blood

It stores glucose

It concentrates urine

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

Hypertension

Uremia

Hyperglycemia

Anemia

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

Selective reabsorption

Peristalsis

Glomerular filtration

Tubular secretion

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

Glucose

Urea

Bicarbonate

Oxygen

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

Water

Glucose

Hydrogen ions

Sodium

8. What is the function of glomerular capillaries?

Secrete hormones

Perform filtration

Store waste

Reabsorb nutrients

9. Which component is most abundant in normal urine?

Protein

Glucose

Water

Red blood cells

10. Which hormone helps in water reabsorption in kidneys?

Insulin

Glucagon

Estrogen

ADH

11. What is the primary function of tubular secretion?

Removing glucose

Reabsorbing proteins

Adding more water

Eliminating additional wastes like H+ and drugs

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

Reabsorption of water and salts

Hormone production

Glucose digestion

Blood filtration

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

Filter blood

Absorb nutrients

Regulate pH and ion balance

Concentrate bile

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

Bone demineralization

Faster digestion

Increased urination

High oxygen levels

15. What structure in the kidney performs glomerular filtration?

Loop of Henle

Glomerulus

Ureter

Collecting duct

16. How is kidney failure commonly treated?

Dialysis or kidney transplant

Antibiotics

Vaccination

Chemotherapy

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

Vasoconstriction

Sweating

Increased breathing

Urination

18. What is thermoregulation?

Regulation of blood sugar

Production of hormones

Maintenance of internal body temperature

Blood pressure control

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

Sweating

Shivering

Vasoconstriction

Pupil dilation

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

Ammonia

Creatinine

Urea

Glucose

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

Glucose

Ammonia

Creatinine

Urea

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

Tubular secretion

ADH

Vasoconstriction

Glomerular filtration

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

Swelling due to fluid retention

Sweating

Increased lung function

Frequent sneezing

24. Which part of the brain controls thermoregulation?

Cerebellum

Medulla

Cerebrum

Hypothalamus

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

Pulmonary capillaries

Coronary capillaries

Glomerular capillaries

Peritubular capillaries

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26. What leads to the formation of kidney stones?

Cold temperature

Dehydration

High vitamin D

Acid reflux

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

Dehydration and high protein intake

High fiber intake

Excess vitamin C

Low salt diet

28. What causes the pain experienced during kidney stones?

Gas formation

Crystals moving through narrow ureters

Acid reflux

Infection of the bladder

29. What is the main purpose of homeostasis?

Increasing metabolism

Enhancing digestion

Controlling external temperature

Maintaining internal stability

30. What is the primary nitrogenous waste in humans?

Ammonia

Creatinine

Uric acid

Urea

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

Normal kidney function

Diabetes

Kidney damage or disease

Dehydration

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

Urea

Sodium

Glucose

Water

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

Selective reabsorption

Osmoregulation

Tubular secretion

Glomerular filtration

34. Which of the following causes kidney stones?

Crystal formation of salts like calcium oxalate

Low blood pressure

Vitamin C deficiency

Excessive fat

35. Which nitrogenous compound is the most toxic?

Uric acid

Ammonia

Creatinine

Urea

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

Bowman's capsule

Loop of Henle

Collecting duct

Proximal convoluted tubule

37. What structure delivers blood to the glomerulus?

Renal vein

Peritubular capillary

Afferent arteriole

Efferent arteriole

38. Which hormone increases urine concentration by retaining water?

Glucagon

Thyroxine

ADH

Insulin

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

Produces bile

Balances water and salt levels

Filters pathogens

Regulates blood pressure

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

Loop of Henle

Collecting duct

Distal tubule

Proximal tubule

41. What do peritubular capillaries primarily do?

Reabsorb water and nutrients

Produce urine

Absorb oxygen

Filter blood

42. What is the function of the ureter?

Transport urine from kidney to bladder

Filter blood

Store urine

Reabsorb water

43. Which of these would be abnormal in urine?

Urea

Water

Glucose

Sodium

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

Glomerular capillaries

Peritubular capillaries

Vasa recta

Alveolar capillaries

45. What is the role of the vasa recta?

Store waste

Maintain salt gradient in medulla

Filter blood

Carry oxygen to the kidney

46. Which condition may result from prolonged kidney failure?

Anemia

Hyperthyroidism

Jaundice

Asthma

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

Liver

Kidney

Spleen

Pancreas

48. Which structure collects the final urine from nephrons?

Distal tubule

Ureter

Collecting duct

Loop of Henle

49. What is the function of the renal pelvis?

Filters blood

Stores urine

Produces urine

Transports urine to the ureter

50. What stimulates ADH release?

High water intake

Low blood volume or high plasma osmolarity

High blood pressure

Low heart rate

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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
Guys do your best for the mcat and Allah will do the rest 🙂 Best of luck to all <3

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

Important Biology Homeostasis Question and Answer

Biology Homeostasis Practice Test Online With Explanation

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Malik Tahir

19 Comments

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