Microbiology - Bacteria Morphology - Discussion

Discussion :: Bacteria Morphology - Section 1 (Q.No.23)


Periplasm is

[A]. the area between the inner and outer membranes of gram-negative bacteria
[B]. the area between the inner and outer membranes of Gram-positive bacteria
[C]. the interior portion of mitochondria
[D]. the area outside the cell membrane that is influenced by the polymers

Answer: Option A


No answer description available for this question.

Diksha Singla said: (Dec 27, 2016)  
The periplasm is a concentrated gel-like matrix in the space between the inner cytoplasmic membrane and the bacterial outer membrane called the periplasmic space in gram-negative bacteria. It has been found using cryo-electron microscopy, that a much smaller periplasmic space is present in gram-positive bacteria.

The periplasm may constitute up to 40% of the total cell volume of gram-negative bacteria, and this is a much smaller percentage in gram-positive bacteria.

So option A &B Both correct then how we can choose option A?

Abdirashid Ahmed said: (Apr 5, 2017)  
A & B both correct because they have layers inner and outer.

Nidhi said: (Jun 24, 2017)  
There is no outer membrane in gram-positive bacteria.

Oodaniels said: (Sep 9, 2017)  
Both gram negative and positive bacteria have periplasmic space; gram negative has higher volume.

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