Product managers often start with a product requirements document (PRD). A product requirements document defines the product you are about to build: It outlines the product's purpose, its features, functionalities, and behavior. Next, you share the PRD with (and seek input from) stakeholders - business and technical teams who will help build, launch or market your product.
For bacteria: The two major families of common bacteria are distinguished by the chemistry of their walls, specifically the ability of iodine to mordant their staining with crystal violet and prevent its being removed with strong solvent. Gram positives include staph and strep, while gram negatives include e. Coli.
Gram-negative bacteria cannot retain the violet stain after the decolorization step; alcohol used in this stage degrades the outer membrane of gram-negative cells making the cell wall more porous and incapable of retaining the crystal violet stain.pecific to gram-positive bacteria is the presence of teichoic acids in the cell wall. Some of these are lipoteichoic acids, which have a lipid component in the cell membrane that can assist in anchoring the peptidoglycan.