bacteroides and escherichia are both gram-negative rods found in the large intestine. why are they in different phyla?

A lipopolysaccharide-containing outer membrane surrounds the peptidoglycan cell wall that encases gram-negative bacteria. In contrast to Gram-negative bacteria, which have an outer membrane, gram-positive bacteria have layers of peptidoglycan that are many times thicker.

What do you mean by Gram-negative rods ?

The crystal violet stain used in the Gram staining method of bacterial differentiation is not retained by gram-negative bacteria.

There are gram-negative bacteria in almost every place on Earth that supports life. Escherichia coli, a model organism, and other pathogenic bacteria, including Pseudomonas aeruginosa, Chlamydia trachomatis, and Yersinia pestis, are all examples of gram-negative bacteria.

Conjugation is the process of directly transferring genetic material from one bacterium to another.

During conjugation, one bacteria serves as the source of the genetic material and the other as the recipient.
A DNA sequence known as the fertility element, or F-factor, is present in the recipient's bacterium.

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