Question

Bacteria lack
A. Cell wall
B. Cell membrane
C. Mitochondria
D. Cytoplasm

Answer 1

Hint:- A cell is the basic component of all life forms. A cell can be classified into two types- prokaryotic cell and eukaryotic cell. The most distinctive feature of the prokaryotic cell is that it does not have membrane-bound cell organelles. Instead of a membrane-bound nucleus, the genetic material of prokaryotic cells is found in the central region of the cell called the nucleoid. They also lack certain cell organelles that are usually found in eukaryotic cells.

Complete Answer:-
Certain eukaryotic cells as well as some prokaryotes have this non-living component that protects the cell and its inner components. This external layer is called the cell wall. Prokaryotes such as bacteria do have a cell wall. A prokaryotic cell wall is mostly made up of peptidoglycan. Some bacteria (gram-negative bacteria) also have an outer lipopolysaccharide (LPS) layer in addition to the inner peptidoglycan layer. The cell wall prevents osmotic lysis of the cell, any mechanical injury to the cell, etc.
While bacteria do not have membrane-bound cell organelles such as the nucleus, they do have a cell membrane. It encloses the cell organelles and the cytoplasm of the bacterial cell. This membrane is composed of phospholipids and it aids in the exchange of nutrients.
The mitochondrion is a cell organelle that can generate an energy-rich molecule called ATP. This double membrane-bound cell organelle is found in most eukaryotic cells. Bacterial cells lack this particular organelle.
The cytoplasm is an inner component of the cell made up of cytosol, cell organelles, and cytoplasmic inclusions. Every living cell has cytoplasm present in it.


The correct option is (C). Bacteria lack mitochondria.


Note:- Bacterial cells, such as Mycoplasma, do not have a cell wall. While eukaryotes such as plant cells, fungi, and algae contain cell walls; their cell walls are very different from bacterial cell walls. Specific antibiotics used during bacterial infections target the cell walls and cell membranes of the bacteria. Erythrocytes or red blood cells are eukaryotic cells that do not have mitochondria.