Question

A cell without an organized nucleus is called as
(a)Prokaryotic cells
(b)Eukaryotic cell
(c)Both a and b
(d)None of the above

Answer 1

Hint: Examples of this cell are bacteria and Archaea. These contain appendages like flagella, pili, and fiber used as the locomotory organ or to capture food. They have a cell envelope containing glycocalyx in either capsule or slime layer.

Complete answer:
Prokaryotic cells have a primitive nucleus that means the nucleus is not surrounded by the nuclear membrane. Prokaryotes contain a circular loop of DNA without non- coding regions. These are devoid of the nuclear envelope thusDNA of the cell aggregates in a dense area of the cell known as the nucleoid.

Additional Information:
-The prokaryotic cells have cell envelopes and cell membranes made up of peptidoglycan.
-Based on the cell wall composition Hans Christian Gram divides the bacteria into two types- gram-positive and gram-negative.
-Prokaryotic cells contra extracellular material known as plasmids.
-Prokaryotic cells have 70s ribosomes which consist of small subunit 30s and large subunit 50s.

So, the correct answer is, ‘ prokaryotic cells.’

Note: -Gram-positive cells have many layers of peptidoglycan and teichoic acids and when stained form crystal violet- teichoic acid complex.
-Gram-negative cells have a very little amount of peptidoglycans and teichoic acid.
-Gram non reactive cells are those cells that have peptidoglycan but very waxy thick lipids waterproof, thus dyes cannot enter either. Examples- Mycobacterium tuberculosis and leprosy.