Question

Which describes eukaryotes?

A) Their nucleic acids are not in a nucleus.

B) Their cells contain nuclei.

C) They do not have a defined structure.

D) They are all multicellular.

Answer 1

Eukaryotes are described as having cells that contain nuclei, distinguishing them from prokaryotes, which lack a true nucleus.

Step-by-step explanation:

The characteristic that describes eukaryotes is B) Their cells contain nuclei. Eukaryotic cells are sophisticated, containing a well-defined nucleus and specialized structures called organelles, such as mitochondria, endoplasmic reticulum, and Golgi apparatus. These cells are usually larger than prokaryotic cells and are found in both single-celled and multicellular organisms. Eukaryotes include diverse life forms ranging from protozoans, algae, fungi, plants, to animals. Moreover, eukaryotes have multiple, rod-shaped chromosomes housed within the nuclear membrane. This is a key feature that distinguishes them from prokaryotic cells, which lack a true nucleus and generally have a single, circular chromosome.