What distinguishes mycoplasma from other bacteria?

Absence of a cell wall

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Presence of organised nucleus

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Presence of organised cell organelles

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None of the above

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Solution

The correct option is A
Absence of a cell wall

Unlike all other bacteria, mycoplasma does not have a cell wall around their cell membrane. Due to the absence of cell wall, they are immune to several antibiotics such as Penicillin and Beta-lactam antibiotics. They are either pathogenic or saprophytic in nature.

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Similar questions

An animal and a plant cell can be differentiated on the basis of:
(i) Presence or absence of chloroplast
(ii) Presence or absence of a cell wall
(iii) Presence or absence of a nucleus
(iv) Presence or absence of a central vacuole
(v) Presence of cell membrane

A plant cell can be identified from an animal cell by the :
(a) absence of centrosome.
(b) presence of cell membrane.
(c) presence of vacuoles
(d) none of the above

Question 1

A common characteristic feature of plant sieve tube cells and most of mammalian erythrocytes is

(a) absence of mitochondria (b) presence of cell wall

What are the types of cells based on the presence or absence of nucleus?

Q. In the eukaryotes the DNA molecules are organised withing the nucleus. How is the DNA molecules organised in a bacterial cell in the absence of nucleus?

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