Which of the following is a major element of life?

Question

BlackTom AI · Accepted Answer

The question asks to identify a major element of life from the given options.
Option 1: Oxygen (O). This is correct because oxygen is one of the most abundant elements in living organisms, making up a large portion of water and organic molecules, and it is a key component of many biomolecules. In biological contexts, oxygen is considered a major element alongside carbon, hydrogen, and nitrogen.
Option 2: Fluorine (F). Fluorine is not a major constituent of living matter. It occurs only in trace amounts and is not a foundational element in biology.
Option 3: Sodium (Na). Sodium is essential for physiological processes such as nerve transmission and fluid balance, but it is not a major element in the composition of biomolecules or overall biomass.
Option 4: Copper (Cu). Copper is a trace element important for certain enzyme functions, but it is not a major element in living organisms.
Option 5: Potassium (K). Potassium is vital for many cellular processes and is essential, but it is still not classified as a major element in the bulk composition of life when compared to elements like oxygen, carbon, hydrogen, and nitrogen.
In summary, among the choices, oxygen stands out as a major element of life due to its abundance in water and organic compounds, whereas the others are trace or physiologically important elements rather than major constituents.

Dashboard TEST 1 2025 T3

Which of the following is a major element of life?

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