Final answer:
Hemoglobin is a tetramer consisting of two α and two β chains. The level of protein structure described in the statement is the quaternary structure.
Step-by-step explanation:
Hemoglobin is a tetramer consisting of two α and two β chains.
The level of protein structure described in the statement is the Quaternary Structure.
The quaternary structure refers to the arrangement and interactions of multiple protein subunits to form a functional protein complex.
In this case, the two α chains and two β chains come together to form the tetrameric structure of hemoglobin.