Which One of the Following Pairs of Substances Could Be

question 52

Multiple Choice

Which one of the following pairs of substances could be used to construct a single redox electrode (i.e., they have an element in common, but in different oxidation states) ?

• A) HCl and Cl-
• B) H+ and OH-
• C) H₂O and H⁺
• D) Fe³⁺ and Fe₂O₃
• E) MnO₂ and Mn²⁺

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Definitions:

Circular Chromosome

A type of chromosome common in bacteria and archaea, characterized by a circular DNA molecule that lacks a telomere and where replication occurs in a bidirectional manner.

Ribosomes

Small cellular structures that are the sites of protein synthesis in living cells.

Cell Wall

Cellular structure that surrounds a plant, protistan, fungal, or bacterial cell and maintains the cell’s shape and rigidity; composed of polysaccharides.

Transformation

In genetics, a process by which the genetic material carried by an individual cell is altered by the incorporation of foreign DNA from its surroundings.