13.1 Excretion (Cambridge (CIE) O Level Biology): Flashcards
Exam code: 5090
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Define excretion.
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Define excretion.
The removal of the waste products of metabolism and other toxic materials from the body
What are the two main waste products of metabolism that must be excreted?
The two main waste products are:
carbon dioxide
urea
Which process produces carbon dioxide as a waste product?
Carbon dioxide is a waste product of respiration
Which organ excretes carbon dioxide from the body?
Carbon dioxide is excreted via the lungs
Where in the body is urea produced?
Urea is produced in the liver during the breakdown of excess amino acids
Which organ excretes urea from the body?
Urea is excreted via the kidneys
Carbon dioxide is a waste product of respiration and is excreted via the .
Carbon dioxide is a waste product of respiration and is excreted via the lungs.
Urea is produced in the liver during the breakdown of excess .
Urea is produced in the liver during the breakdown of excess amino acids.
Why must the waste products of metabolism be removed from the body?
They are toxic, so a buildup would lead to cell damage and eventually organ failure and death
True or False?
Urea is excreted via the lungs.
False.
Urea is excreted via the kidneys; the lungs excrete carbon dioxide
True or False?
Carbon dioxide is a waste product of respiration.
True.
Carbon dioxide is produced during respiration and is excreted via the lungs
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