Why can most organisms not directly use atmospheric nitrogen?
Answer and explanation
Correct answer: Because it is not directly in a biologically usable form
Atmospheric nitrogen exists mainly as N₂, whose two nitrogen atoms are joined by a very strong triple bond. Most organisms cannot break this bond and therefore cannot use N₂ directly to make proteins or nucleic acids. Nitrogen-fixing bacteria and some industrial or natural processes convert it into ammonia, ammonium, or nitrates. The other options describe incorrect physical conditions or irrelevant comparisons.
Frequently asked questions
What is the correct answer to this question?
Because it is not directly in a biologically usable form
Why is this the correct answer?
Atmospheric nitrogen exists mainly as N₂, whose two nitrogen atoms are joined by a very strong triple bond. Most organisms cannot break this bond and therefore cannot use N₂ directly to make proteins or nucleic acids. Nitrogen-fixing bacteria and some industrial or natural processes convert it into ammonia, ammonium, or nitrates. The other options describe incorrect physical conditions or irrelevant comparisons.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Financial Statements I.
