Questions and Answers
Name the four most abundant elements in living organisms.
Carbon, Hydrogen, Oxygen, Nitrogen
What percentage of human body mass is Carbon?
18%
What percentage of human body mass is Hydrogen?
9%
What percentage of human body mass is Oxygen?
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What percentage of human body mass is Nitrogen?
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What percentage of atoms in the human body is Carbon?
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What percentage of atoms in the human body is Hydrogen?
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What percentage of atoms in the human body is Oxygen?
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What percentage of atoms in the human body is Nitrogen?
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Carbon classifies under which category?
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Hydrogen classifies under which category?
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Oxygen classifies under which category?
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Nitrogen classifies under which category?
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Calcium classifies under which category?
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Chlorine classifies under which category?
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Magnesium classifies under which category?
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Phosphorus classifies under which category?
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Potassium classifies under which category?
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Sodium classifies under which category?
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Sulfur classifies under which category?
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Boron classifies under which category?
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Chromium classifies under which category?
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Cobalt classifies under which category?
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Copper classifies under which category?
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Fluorine classifies under which category?
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Iodine classifies under which category?
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Iron classifies under which category?
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Manganese classifies under which category?
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Molybdenum classifies under which category?
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Selenium classifies under which category?
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Silicon classifies under which category?
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Tin classifies under which category?
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Vanadium classifies under which category?
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Zinc classifies under which category?
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Mineral elements carry how much % of body mass?
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Trace elements carry how much % of body mass?
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Most common elements carry how much % of body mass?
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Study Notes
Essential Elements in Living Organisms
- Four most abundant elements in living organisms: Carbon, Hydrogen, Oxygen, Nitrogen.
- Carbon constitutes 18% of human body mass.
- Hydrogen accounts for 9% of human body mass.
- Oxygen is the most abundant, making up 65% of human body mass.
- Nitrogen comprises 3% of human body mass.
Distribution of Atoms in the Human Body
- Carbon represents 9.5% of total atoms in the human body.
- Hydrogen dominates with 63.0% of total atoms.
- Oxygen accounts for 25.5% of the atoms.
- Nitrogen contributes 1.4% to the atomic composition.
Classification of Common Elements
- Carbon, Hydrogen, Oxygen, and Nitrogen are classified as the most common elements.
- Calcium, Chlorine, Magnesium, Phosphorus, Potassium, Sodium, and Sulfur are categorized as mineral elements.
Trace Elements
- Minor components in biology include Boron, Chromium, Cobalt, Copper, Fluorine, Iodine, Iron, Manganese, Molybdenum, Selenium, Silicon, Tin, Vanadium, and Zinc, all classified as trace elements.
Body Mass Contribution
- Mineral elements contribute less than 1% to total body mass.
- Trace elements constitute even less, less than 0.01% of body mass.
- The most common elements together account for approximately 95% of the human body's mass.
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Description
Explore the essential elements that make up living organisms, focusing on the most abundant elements in the human body. This quiz covers their distribution, classification, and significance. Test your knowledge on the vital atoms required for life!
