Which of the following is the correct structure level of hemoglobin protein?Group of answer choicessecondaryprimarytertiaryquarternary

To determine the correct structural level of hemoglobin protein, we first need to understand the different levels of protein structure.

1. Primary Structure: This is the sequence of amino acids in the polypeptide chain.
2. Secondary Structure: This refers to local structures formed by hydrogen bonding, such as alpha helices and beta sheets.
3. Tertiary Structure: This is the overall three-dimensional shape of a single polypeptide chain, formed by various interactions among the side chains of the amino acids.
4. Quaternary Structure: This describes the arrangement of multiple polypeptide chains in proteins that consist of more than one chain, as seen in hemoglobin, which is made up of four subunits.

Final Answer

Hemoglobin has a quaternary structure because it is composed of four subunits (two alpha and two beta chains) that work together to carry oxygen.