Junior Cert Science - Biology

Which of the following is NOT an excretory organ?
1. Liver
2. Skin
3. Kidney
4. Lungs
Which one of the following substances is NOT excreted by the human body?
1. Saliva
2. Urea
3. Carbon dioxide
4. Salt
Which one of the following set of waste products is excreted by the lungs?
1. Carbon dioxide & water vapour
2. Carbon dioxide & oxygen
3. Oxygen & water vapour
4. Nitrogen & carbon dioxide
The waste products of the lungs are produced by
1. respiration
2. photosynthesis
3. digestion
4. reproduction
What are the waste products of the kidneys?
1. Urea, water & salts
2. Urea & water
3. Urea & salts
4. Salts, water and carbon dioxide
Urea is made of
1. protein broken down in the liver
2. urine, salt & water
3. protein stored in the urethra
4. protein broken down in the kidneys
The waste product from skin is known as
1. sweat
2. urine
3. urea
4. salts
Which one of the following is NOT part of the urinary system?
1. Liver
2. Kidneys
3. Bladder
4. Urethra
Which is the correct order for the path taken by urine after it leaves the kidneys?
1. Ureters, bladder, urethra
2. Bladder, ureters, urethra
3. Urethra, bladder, ureters
4. Bladder, urethra, ureters
Name the parts labelled A and B in the diagram.
1. A = ureter, B = bladder
2. A = urethra, B = kidney
3. A = bladder, B = ureter
4. A = ureter, B = kidney
What is the function of the ureter?
1. To carry urine from the kidney to the bladder
2. To store urine
3. To carry urine out of the body
4. To remove waste from the blood
The function of the skin is
1. regulate heat in the body
2. to give the body shape
3. to prevent bleeding
4. to protect delicate organs
Blood enters the kidneys via
1. the renal arteries
2. the renal veins
3. the ureters
4. the urethra
In what part of the body is the waste filtered from the blood?
1. Kidneys
2. Liver
3. Bladder
4. Intestine
Which one of the following pairs carry waste products?
1. Renal artery and ureter
2. Renal vein and urethra
3. Renal artery and renal vein
4. Renal vein and ureter
Through what organs do humans excrete salts?
1. Kidneys and skin
2. Lungs and skin
3. Kidneys, lungs and skin
4. Kidneys and lungs
Which one of the following is NOT present in urine?
1. Salivary amylase
2. Salts
3. Water
4. Urea
The two main functions of sweat are
1. to remove waste products and to cool the body
2. to keep the body warm and to filter the blood
3. to filter the blood and to remove waste products
4. to keep the body cool and to remove excess proteins
Name the parts labelled X and Y in the diagram
1. X = kidney, Y = renal artery
2. X = kidney, Y = bladder
3. X = kidney, Y = renal vein
4. X = bladder, Y = renal artery
Water is an excretory product of the human body. What would you test the presence of water with?
1. Cobolt chloride paper
2. Litmus paper
3. Limewater
4. Universal Indicator paper
What is manufactured in the liver by removing excess protein?
1. Urea
2. Hydrochloric acid
3. Sugar
4. Carbon dioxide
What happens if a person has one kidney removed?
1. They will continue as normal
2. They will die
3. They will accumulate excess urea
4. They will stop making urine
Name the parts of the urinary system labelled P and Q in the diagram
1. P = urethra, Q = renal vein
2. P = ureter, Q = renal vein
3. P = urethra, Q = bladder
4. P = ureter, Q = kidney
What is the function of the part labelled R in the diagram?
1. To store urine until it is released from the body
2. To filter waste from the blood
3. To carry urine to the bladder
4. To get rid of excess water and salts from the body
The largest organ in the human body is
1. the skin
2. the kidneys
3. the lungs
4. the brain

Junior Cert Science - Biology - Excretion

Multiple Choice Quiz