Question

question 11
which of the following is not a major element of a microbial cell?
a oxygen
b copper
c hydrogen
d nitrogen
e carbon

Explanation:

Microbial cells, like all living cells, are mainly composed of major elements such as carbon (C), hydrogen (H), oxygen (O), nitrogen (N), phosphorus (P), and sulfur (S). These elements are essential for the basic structure and function of the cell, such as forming organic compounds (e.g., carbohydrates, proteins, nucleic acids). Copper (Cu) is a trace element. Trace elements are required in very small amounts for specific enzymatic or structural functions but are not among the major elements that make up the bulk of the cell.

Answer:

B. Copper