Quiz: Excretion

1. State the name of the gas excreted through the lungs and write the balanced chemical equation for its production during cellular respiration.
   
   

2. What are the two main regions of the kidney? Describe their functions.
   
   

3. Explain how urea is produced in the human body. Include a chemical equation.
   
   

4. Describe the process of deamination. How does it relate to urea formation?
   
   

5. Outline the steps involved in urine formation within a nephron.
   
   

6. State the three substances excreted by the kidneys. Explain why each is important to be excreted.
   
   

7. What happens if waste products like urea are not excreted? Give reasons for each consequence.
   
   

8. Describe the structure of the nephron, including the glomerulus and tubules. Explain their functions.
   
   

9. Which of the following statements about urea is correct?
   A) Urea is produced in the kidneys and excreted directly.
   B) Urea is produced in the liver from excess amino acids.
   C) Urea is only excreted during exercise.
   D) Urea is a nutrient required by the body.
   
   

10. Which kidney region is primarily responsible for producing concentrated urine?
    A) Cortex
    B) Medulla
    C) Cortex and medulla
    D) Neither cortex nor medulla

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Mark Scheme
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