Question

What is a eukaryote, and when did eukaryotes first arise?

Answer 1

An organism whose cells contain membrane-bound organelles and whose DNA is enclosed in a cell nucleus and is associated with proteins.

The first eukaryotes appeared between 1.5 and 2 billion years ago.

Answer 2

Eukaryote are cells with a nucleus an internal membrane-bound organelles probably evolved about 2 billion years ago.

What is the origin of eukaryotes?

The leading hypothesis, called the endosymbiotic theory, is that eukaryotes arose as a result of a fusion of Archaean cells with bacteria, where an ancient Archaean engulfed (but did not eat) an ancient, aerobic bacterial cell.

What is meant by eukaryotic cell?

Eukaryotes are organisms whose cells contain a nucleus and other membrane-bound organelles.

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