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Is it burned-out or burnt-out light bulb?
bulb light burned out every 4 months.type of bulb is H7
What is h and o antigens?
H antigens correspond to the antigenic type of the bacterial flagellaO antigens correspond to the antigenic type of the Lipopolysaccharide layer on the outer membrane of gram negative bacteriabacteria all have different antigenic types on their surface which react to different types of antibodies and are classified using this method. For example the pathogenic E. coli O157:H7 has the designation 157 for its O antigen meaning it will not react with antibodies with a different serotype.
Describe three harmful effects of unicellular organisms?
One might consider "Nature" as being bad... but it is all a double edged coin with both positives and negatives.1 - Disease. Certainly colds, flu, etc, are inconvenient. Noting that cold and flu are viral, strep throat, is bacterial, yeast infections, Giardiasis (Giardia) is a protozoa, etc.However, consider what bread would be like without yeast, for example.As far as E-Coli, the news only discusses one type, O157:H7. There are other perfectly harmless types of E-Coli.2 - Allergies, for example molds which can be unicellular or multicellular.Although, yeasts and bacteria fight a mini-battle on your body, and keep each other in check.3 - Spoiling of food.Consider what the world would be like if nothing decomposed. Dead animal carcasses just sat there. Apple cores lasted forever. And, of course, this decomposition with bugs and bacteria converts the nutrients from one form to another and aids in the reuptake of the vitamins and minerals by plants, and continuing of the food chain.
