Bacterial metabolism US Medical PG Flashcards - Medical Study Cards
Master Bacterial metabolism with OnCourse flashcards. These spaced repetition flashcards are designed for medical students preparing for NEET PG, USMLE Step 1, USMLE Step 2, MBBS exams, and other medical licensing examinations.
Bacterial metabolism Flashcard Deck - 10 Cards
Flashcard 1: What is the oxygen dependency of Bacillus anthracis?_____
Answer: obligate aerobe
Flashcard 2: In the intestine, NH3 may be produced by intestinal _____
Answer: bacteria
Flashcard 3: What are the two types of bacterial transduction?
Answer: Generalized and Specialized
Extra: Generalized transduction: Any piece of bacterial DNA can be packaged into the phage head. Occurs during the lytic cycle.
Specialized transduction: Only specific bacterial genes (those adjacent to the prophage integration site) are packaged. Occurs when a prophage is incorrectly excised during the lysogenic cycle.
Flashcard 4: What is the oxygen dependency of Actinomyces?_____
Answer: Obligate anaerobe
Flashcard 5: What is the oxygen dependency of Nocardia spp.?_____
Answer: Obligate aerobe
Flashcard 6: _____ use fermentation to generate ATP
Answer: Obligate anaerobes
Extra: Obligate anaerobes lack antioxidant enzymes like superoxide dismutase and catalase, making them susceptible to oxidative damage. They generate ATP via fermentation or anaerobic respiration (using a final electron acceptor other than oxygen).
Flashcard 7: Rocky Mountain spotted fever
Answer: Rickettsia rickettsii
Extra: Clinical features: Headache, fever, and rash beginning on wrists and ankles, progressing to trunk, palms, and soles.
Treatment: Doxycycline
Flashcard 8: epidemic typhus
Answer: Rickettsia prowazeckii
Extra: rash that begins centrally and spreads but spares palms and soles doxycycline
Flashcard 9: Ehrlichiosis (Causative agent)
Answer: Ehrlichia chaffeensis
Extra: Monocytes with morula (berry-like) inclusions.
Note: Human Monocytic Ehrlichiosis (HME) is caused by E. chaffeensis, while Human Granulocytic Anaplasmosis (HGA) is caused by Anaplasma phagocytophilum.
Flashcard 10: What is the causative agent of Human Granulocytic Anaplasmosis?
Answer: Anaplasma phagocytophilum (carried by Ixodes tick) :: causative agent
Extra: Characteristic finding: Granulocytes with morulae (mulberry-like cytoplasmic inclusions).
Note: Human Monocytic Ehrlichiosis (HME) shows morulae in monocytes.
Keywords: Bacterial metabolism flashcards, medical flashcards, NEET PG preparation, USMLE Step 1 flashcards, Anki alternative, spaced repetition medical, OnCourse flashcards
