Science - Biology - Excretion
Multiple Choice Quiz
1. Name the parts of the urinary system labelled P and Q in the diagram
A.
?
P = urethra, Q = bladder
B.
?
P = urethra, Q = renal vein
C.
?
P = ureter, Q = kidney
D.
?
P = ureter, Q = renal vein
2. What is manufactured in the liver by removing excess protein?
A.
?
Sugar
B.
?
Hydrochloric acid
C.
?
Carbon dioxide
D.
?
Urea
3. The two main functions of sweat are
A.
?
to keep the body warm and to filter the blood
B.
?
to filter the blood and to remove waste products
C.
?
to remove waste products and to cool the body
D.
?
to keep the body cool and to remove excess proteins
4. Which one of the following set of waste products is excreted by the lungs?
A.
?
Carbon dioxide & oxygen
B.
?
Carbon dioxide & water vapour
C.
?
Oxygen & water vapour
D.
?
Nitrogen & carbon dioxide
5. The largest organ in the human body is
A.
?
the brain
B.
?
the lungs
C.
?
the skin
D.
?
the kidneys
6. What is the function of the part labelled R in the diagram?
A.
?
To carry urine to the kidney
B.
?
To get rid of excess water and salts from the body
C.
?
To filter waste from the blood
D.
?
To store urine until it is released from the body
7. What is the function of the ureter?
A.
?
To remove waste from the blood
B.
?
To carry urine from the kidney to the bladder
C.
?
To store urine
D.
?
To carry urine out of the body
8. Which one of the following substances is NOT excreted by the human body?
A.
?
Saliva
B.
?
Urea
C.
?
Salt
D.
?
Carbon dioxide
9. Through what organs do humans excrete salts?
A.
?
Kidneys and lungs
B.
?
Lungs and skin
C.
?
Kidneys and skin
D.
?
Kidneys, lungs and skin
10. Blood enters the kidneys via
A.
?
the renal arteries
B.
?
the ureters
C.
?
the renal veins
D.
?
the urethra
11. The waste products of the lungs are produced by
A.
?
respiration
B.
?
photosynthesis
C.
?
digestion
D.
?
reproduction
12. Which of the following is NOT part of the urinary system?
A.
?
Urethra
B.
?
Kidneys
C.
?
Liver
D.
?
Bladder
13. Urea is made of
A.
?
protein broken down in the kidneys
B.
?
protein broken down in the liver
C.
?
urine, salt & water
D.
?
protein stored in the urethra
14. Apart from excretion, select another function of the skin from the following list:
A.
?
To regulate heat in the body
B.
?
To give the body shape
C.
?
To protect delicate organs
D.
?
To prevent bleeding
15. Which one of the following pairs carry waste products?
A.
?
Renal vein and ureter
B.
?
Renal artery and ureter
C.
?
Renal artery and renal vein
D.
?
Renal vein and urethra
16. Name the parts labelled X and Y in the diagram
A.
?
X = kidney, Y = renal artery
B.
?
X = kidney, Y = renal vein
C.
?
X = bladder, Y = renal artery
D.
?
X = kidney, Y = bladder
17. What are the waste products of the kidneys?
A.
?
Urea & salts
B.
?
Urea & water
C.
?
Salts, water and carbon dioxide
D.
?
Urea, water & salts
18. Name the parts labelled A and B in the diagram.
A.
?
A = urethra, B = kidney
B.
?
A = ureter, B = bladder
C.
?
A = bladder, B = ureter
D.
?
A = ureter, B = kidney
19. Which is the correct order for the path taken by urine after it leaves the
kidneys?
A.
?
Bladder, urethra, ureters
B.
?
Urethra, bladder, ureters
C.
?
Bladder, ureters, urethra
D.
?
Ureters, bladder, urethra
20. Which one of the following is NOT present in urine?
A.
?
Salivary amylase
B.
?
Urea
C.
?
Water
D.
?
Salts