Which of the following elements is considered a second tier biochemical element meaning that it is less abundant than first tier elements but still required for life in all organisms?
A)H
B)N
C)P
D)C
E)O

Question

Quizplus · Accepted Answer

First tier elements are the most abundant elements in living organisms, including C, H, O, N, S, and P. Among them, phosphorus (P) is considered a second-tier biochemical element because it is less abundant than the others but necessary for life in all organisms.

Which of the Following Elements Is Considered a Second Tier