Which feature is found in prokaryotic cells but not in eukaryotic cells?
a. cytoplasm
b. nucleoid
c. plasma membrane
d. nucleus

The correct answer is B - nucleoid.

The nucleoid is a region in a prokaryotic cell that houses the main DNA material of the cell.

In contrast to eukaryotic cells with a nucleus, prokaryote have a nucleoid where the genetic material can be found. The nucleoid is different from the nucleus in eukaryotes in that the genetic material is not enclosed in a membrane to separate it from the cytoplasm.

The nucleoid usually contains  only a single chromosome which has the cell DNA.

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

yes? sounds right, but you didn’t ask a question.