-humans are only natural host... -can be normal … grow best aerobically in an atmosphere containing 5–10% carbon dioxide at a temperature of 89.6–98.6°F (32–37°C) and a pH of 7–7.5. Created by. All the bacteria classified within the genus Bacillus are capable of forming endospores. PLAY. Match. Neisseria spp. During periods of endemic disease, about 10 % of the general population harbour Neisseria meningitidis in the nasopharynx. D. is commonly found in raw milk. Exam II. Since N. meningitidis is a strict human pathogen and most patients have not been in contact with other cases, asymptomatic carriers are presumably the major source of the pathogenic strains.

A gram-negative, oxidase-positive diplococcus growing on chocolate agar likely belongs to the genus-Neisseria.-Mycobacterium.-Pseudomonas.-Escherichia. The mol% G + C of the DNA is: 48–56. Neisseria structure and physiology... gram…. Taxonomy of the Family Neisseriaceae. are fastidious. The genus Neisseria belongs to the family Neisseriaceae of the Betaproteobacteria. The genus Neisseria, for example, includes the bacteria N. gonorrhoeae, the causative agent of the STI gonorrhea, and N. meningitides, the causative agent of bacterial meningitis. The genera Moraxella and Acinetobacter are also included in the family Neisseriaceae . Bergey's Manual of Systematics of Archaea and Bacteria. E. Coli - Genus I Shigella - Genus II. Microbiology - Enterobacteriaceae. Learn vocabulary, terms, and more with flashcards, games, and other study tools. An analysis of 16S rRNA gene sequences from archived clinical reference specimens has identified two novel Neisseria species. Amongst species with validly published names, the closest species to the newly identified organisms were Neisseria canis, N. dentiae, N. zoodegmatis, N. animaloris and N. weaveri.

Choose the genus that is best described as oxidase-positive, gram-negative cocci that are normal flora of the respiratory and other mucosal surfaces and that often form diplococci. These results suggest that these organisms are likely identical and belong to the genus Neisseria. Terms in this set (96) What organisms belong in tribe I - Escherichia. what are the two species of neisseria t…. Neisseria spp. This genus, Neisseria, is divided into more than ten different species, but most of them are gram negative and coccoid. The mol % G + C of the DNA is : 48–56. Table 1. Test. For each species, two strains from independent sources were identified. Inhabitants of the mucous membranes of mammals. Flashcards. M catarrhalis was formerly placed in the genus Neisseria; however, studies of DNA base content, fatty acid composition, and genetic transformation showed that this organism did not belong in that genus.

The matches with all other established Neisseria species, including the bacillary organisms N. elongata and N. weaveri, were at or less than 95%. The predominant cellular fatty acids were C 16 : 0, summed feature 3 (C 16 : 1 ω7c and/or iso-C 15 : 0 2-OH) and C 18 : 1 ω7c.