5 Questions
Which element is the most predominant and versatile element of life?
Carbon
Which of the following elements are functionally important and found in cells?
Ca, K, Na, Cl, Mg, Fe, Cu, Co, I, Zn, F, Mo, and Se
Which elements together constitute about 90% of the dry weight of the human body?
Carbon, hydrogen, oxygen, nitrogen, phosphorus, and sulfur
How many different organic compounds are found in a single cell of the bacterium, Escherichia coli?
6,000
Approximately how many different types of molecules are believed to be present in the human body?
100,000
Study Notes
Elements of Life
- Carbon is the most predominant and versatile element of life.
Functionally Important Elements
- Oxygen, carbon, nitrogen, and hydrogen are functionally important and found in cells.
Human Body Composition
- Oxygen, carbon, nitrogen, and hydrogen together constitute about 90% of the dry weight of the human body.
Organic Compounds in Bacteria
- A single cell of the bacterium Escherichia coli contains approximately 4,000 different organic compounds.
Molecules in the Human Body
- The human body is believed to contain around 10,000 to 15,000 different types of molecules.
Test your knowledge on the essential elements of living matter with this quiz! From carbon to sulfur and many more, discover the key elements that make up the human body and play crucial roles in cellular functions. Challenge yourself and see how well you know the building blocks of life.
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