Question

Prokaryotes contain ……………….. at the place of the nucleus.

Answer 1

Hint: Most of the prokaryotes have a small circular DNA found floating in the cell which acts as genetic material. It does not have a nuclear coat or membrane surrounding it.

Complete answer:
The undefined nuclear region in the prokaryotes is known as the nucleoid. The prokaryotes have a primitive type of nucleus and it is devoid of a nuclear membrane to surround it.
prokaryotes do not have a nucleus with an envelope called a nuclear membrane. Therefore it is called a nucleoid.
Additional information:
1. The word prokaryote comes from the Greek words ‘pro’ and ‘karyon’ where ‘pro’ means primitive and ‘karyon’ means nucleus.
2. Prokaryotes are a type of organism which do not have a covered nucleus.
3. Prokaryotes include most of the single-celled organisms, which consists of 2 major classes: archaea and bacteria.
4. Other membrane-bound cell organelles such as vacuole, mitochondria, or plastids are also missing with the nuclear membrane.
5. All the living organisms can be divided into 3 domains, they are as follows:
bacteria, archaea, and eukarya.
6. While in the case of eukaryotes instead of the nucleoid, a well developed advanced structure is found called nucleus having an outer nuclear membrane and inner nuclear membrane as their covering.

So, the correct answer is, ‘nucleoid’.

Note:
Bacterial or prokaryotic cells have only one cell which carries all the functions of the organisms. These cells can also form a community in which company each other to combat the competitors.
Multicellular organisms have more than one cell and the work is almost equally divided among the cells. Each cell has its own function and workings.