5 Questions
Which element is the most frequently found in cells, forming about 96% of the human body mass?
Oxygen (O)
How many elements are needed to build living organisms?
25
Which elements are found in small quantities in cells but are important in biological processes?
Trace-elements
Which type of compounds do not contain carbon?
Inorganic compounds
Which type of compounds usually consist of macromolecules and are found in and originate from living organisms?
Organic compounds
Test your knowledge on the chemical composition of cells and the elements found within them. Learn about the key elements required for building living organisms and their significance in the human body. Explore the concept of trace elements and their role in cellular processes.
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