Mycoplasma: Morphology, Structure, Features, Habitat, Diseases II Free Study Material II With Question Practice II ASRB NET, ICAR-JRF, ICAR-SRF, DBT-JRF, ICMR-JRF II Biology Exams

Mycoplasmas are the microorganisms that lacks Cell Wall.

They are Prokaryotes.

They are Pleomorphic vary in shape ~Pleomorphic.

They lack cell wall and cannot synthesize Peptidoglycan.

They are Penicillin resistant.

Most of them are Non-Motile

They require sterols for growth, which are Incorporated into the plasma membrane. 

Sterols may facilitate osmotic stability.

Most of them are facultative anaerobes but few are obligate.

They have smallest genome among prokaryotes.

They are incapable of synthesizing a large number of macromolecules.

HABITAT:

Mycoplasmas can be saprophytes, commensals, or parasites, and many are pathogens of plants, animals, or insects.

ECONOMIC IMPORTANCE:

Some of the major diseases caused by Mycoplasmas are: -

Contagious bovine pleuropneumonia in cattle (M.mycoides)

Chronic respiratory disease in chickens (M. gallisepticum), 

Pneumonia in swine (M. hyopneumoniae)

Pneumonia in humans (M. pneumoniae) 

QUESTION PRACTICE

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R (ICAR PG Plant Science)

Assertion A : Mycoplasmas are pleomorphic in shape 

Reason R : Cell wall in Mycoplasmas is flexible 

In light of the above statements, choose the correct answer from the options given below

Both A and R are true and R is the correct explanation of A

Both A and R are true but R is NOT the correct explanation of A 

A is true but R is false 

A is false but R is true 

Comment down the answer.