Which element could be called the "currency for energy exchange in living systems"?
A) oxygen
B) sulphur
C) nitrogen
D) carbon

Question

Which element could be called the "currency for energy exchange in living systems"? 
A) oxygen 
B) sulphur 
C) nitrogen 
D) carbon

Quizplus · Accepted Answer

Carbon is the element that is the basis for all organic molecules in living systems, including carbohydrates, lipids, nucleic acids, and proteins. These organic molecules are the main source of energy for living organisms and are constantly being exchanged and transformed through metabolic processes. Therefore, carbon could be considered the "currency for energy exchange" in living systems.

Which Element Could Be Called the "Currency for Energy Exchange