Which organism is a GNB with gull wing shape, oxidase positive, motile, and weak catalase positive?

Prepare for the CAMLPR Microbiology Test. Utilize flashcards and engaging multiple-choice questions, each equipped with descriptions and explanations. Ready yourself for an excellent performance!

The key idea here is recognizing curved, gull-wing–shaped Gram-negative rods that are oxidase positive and motile. This combination points to Campylobacter species, especially Campylobacter jejuni, the classic human pathogen. They appear as curved, S- or gull-wing–shaped bacteria on Gram stain, and their motility comes from a polar flagellum. Oxidase positivity supports this genus, and catalase activity is usually present (though some strains may show weak activity depending on conditions). This contrasts with the other organisms: Stenotrophomonas maltophilia appears as straight Gram-negative rods and is typically oxidase negative; Haemophilus parainfluenzae is a small, non-motile coccobacillus that requires X and V factors; Salmonella is a straight, motile Gram-negative rod that is oxidase negative.