IGCSE Excretion in humans

In which organ of the body deamination take place?

• Kidney

• Lungs

• Liver

• Stomach

State the molecule produced from the breakdown of excess amino acids

Which of the following is too large to be filtered by the kidneys from the blood?

• Glucose

• Protein

• Mineral ions

• Water

In a healthy person what percentage of the glucose filtered by the kidneys from the blood is reabsorbed?

• 0.1%

• 1%

• 10%

• 100%

State the process responsible for the reabsorption of water

What region of the kidney is coloured red in the diagram?

Which structure transports urine to the outside of the body?

• Urethra

• Cortex

• Ureter

• Glomerulus

Identify the process responsible for the reabsorption of glucose against the concentration gradient

Which organ in the body is responsible for the excretion of carbon dioxide?

• Kidney

• Brain

• Heart

• Lung

In which organ of the body is urine stored?