Bacteria Morphology
Which is most likely to be exposed on the surface of a gram-negative bacterium?

Pore protein (porin)
Protein involved in energy generation
Phospholipids
Lipoteichoic acid

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Bacteria Morphology
Periplasm is

the area between the inner and outer membranes of Gram-positive bacteria
the area outside the cell membrane that is influenced by the polymers
the interior portion of mitochondria
the area between the inner and outer membranes of gram-negative bacteria

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Bacteria Morphology
Porins are located in

the cytoplasmic membrane of both gram-negative and gram-positive bacteria
the periplasmic space of gram-negative bacteria
the outer membrane of gram-negative bacteria
the peptidoglycan layer of gram-positive bacteria

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