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What is the primary excretory product of humans? (2021)

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Question: What is the primary excretory product of humans? (2021)

Options:

  1. Urea
  2. Creatinine
  3. Uric acid
  4. Ammonia

Correct Answer: Urea

Exam Year: 2021

Solution:

Urea is the primary nitrogenous waste product excreted by humans, formed in the liver from ammonia and carbon dioxide.

What is the primary excretory product of humans? (2021)

Practice Questions

Q1
What is the primary excretory product of humans? (2021)
  1. Urea
  2. Creatinine
  3. Uric acid
  4. Ammonia

Questions & Step-by-Step Solutions

What is the primary excretory product of humans? (2021)
  • Step 1: Understand that humans produce waste products as a result of metabolism.
  • Step 2: Identify that one of the main waste products is nitrogenous waste, which comes from the breakdown of proteins.
  • Step 3: Know that ammonia is a toxic substance produced during this breakdown.
  • Step 4: Realize that the liver converts ammonia into a less toxic substance called urea.
  • Step 5: Understand that urea is then excreted from the body through urine.
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