Question

check your understanding
choose the correct answer from the drop - down selection for each definition below
a uni - celled organism without a membrane - bound nucleus
the plural form of bacterium
the term for an organism without a membrane - bound nucleus
an organism that can only live within the cells of other organisms

Explanation:

First Question (A uni - celled organism without a membrane - bound nucleus)

Prokaryotes are defined as unicellular organisms that lack a membrane - bound nucleus. Bacteria are prokaryotes, but the term for the group of organisms without a membrane - bound nucleus is prokaryote. Viruses are not cells, and bacteria is a type of prokaryote. So the correct answer is Prokaryote.

The plural of bacterium is bacteria. Bacterium is singular, prokaryote is a type of organism, and virus is a different entity. So the correct answer is Bacteria.

Organisms without a membrane - bound nucleus are called prokaryotes. Bacteria are prokaryotes, virus is not a cell, and bacteria is a type of prokaryote. So the correct answer is Prokaryote.

Answer:

Prokaryote

Second Question (The plural form of bacterium)