Question

Among the following, the egg yolk protein is_______.

• A. Livetin
• B. Ovalbumin
• C. Avidin
• D. Conalbumin

Hint:

Remember that most well-known egg proteins like Ovalbumin, Conalbumin, and Avidin are from the egg WHITE. The main yolk proteins are lipoproteins (like lipovitellin) and phosphoproteins (like phosvitin), with water-soluble proteins called livetins.

Answer 1

The Correct Option is A

Step 1: Differentiate between egg yolk and egg white proteins. The egg is composed of two main protein-containing parts: the yolk and the white (albumen). They contain different types of proteins.
Step 2: Classify the proteins listed.

Livetin: This is one of the main classes of proteins found in the egg yolk.
Ovalbumin: This is the most abundant protein in the egg white.
Avidin: This is a minor protein found in the egg white, known for its ability to bind biotin.
Conalbumin (Ovotransferrin): This is a major protein in the egg white with iron-binding properties. \end{itemize} Therefore, livetin is the egg yolk protein among the choices.