What kind of cell is an unfertilized chicken egg?

An unfertilized chicken egg is essentially a single, large cell known as an ovum or oocyte. It contains a nucleus and cytoplasm, surrounded by a protective membrane and layers of albumen (egg white) and shell. This cell is not fertilized, meaning it does not have the potential to develop into a chick. Instead, it serves as a nutrient-rich environment, primarily for the development of an embryo if fertilization occurs.