A mammal removes carbon dioxide made by its cells through the lungs and removes urea through the kidneys. The removal of these waste products of metabolism ...
Question 1 Report
A mammal removes carbon dioxide made by its cells through the lungs and removes urea through the kidneys. The removal of these waste products of metabolism is an example of which characteristic?
Answer Details
Excretion is the removal of the waste products of metabolism, the substances made by the chemical reactions inside cells. Carbon dioxide from respiration and urea from breaking down proteins are both such wastes, so removing them through the lungs and kidneys is excretion. It is not egestion, which removes undigested food that never entered the cells, and it is not movement or nutrition. Remember that excretion deals with waste the body itself made, not with food passing through the gut.
Download The App On Google Playstore
Everything you need to excel in your exams
