5 Questions
Which organs are primarily responsible for excretion in vertebrates?
Lungs, kidneys, and skin
What is the main waste product excreted by mammals?
Urine
How do unicellular organisms excrete waste products?
Directly through the surface of the cell
What are the waste products produced during cellular respiration in the body?
Carbon dioxide, water, salts, urea, and uric acid
What is the harmful consequence of the accumulation of metabolic waste beyond a certain level in the body?
Harmful to the body
Study Notes
Excretory Organs
- Kidneys, liver, lungs, and skin are primarily responsible for excretion in vertebrates, with kidneys being the primary excretory organs.
Waste Product Excreted by Mammals
- Urea is the main waste product excreted by mammals, produced in the liver and excreted through the kidneys.
Unicellular Organisms
- Unicellular organisms excrete waste products directly through their cell membranes, without the need for specialized excretory organs.
Waste Products of Cellular Respiration
- Carbon dioxide and lactic acid are the waste products produced during cellular respiration in the body, which need to be excreted to maintain homeostasis.
Consequences of Waste Accumulation
- The accumulation of metabolic waste beyond a certain level in the body can lead to harmful consequences, including acidosis, toxicity, and disease.
Test your knowledge on excretion and learn about the different organs involved in this vital process. Explore how waste is eliminated from the body and understand its importance in maintaining overall health.
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