Micro MCQ 3 Flashcards
What step does amantadine act on in Orthomyxoviruses replication?
Uncoating step
Where does transcription take place in Orthomyxoviruses?
Nucleus
How are Orthomyxoviruses transmitted?
Via droplets
Describe the structure of Orthomyxoviruses.
Linear, negative-sense, single-stranded RNA viruses that are segmented, helical, and enveloped
What symptom is caused by measles?
Koplik’s spots against molar teeth
Where do Paramyxoviruses replicate?
Epithelial cells of the upper respiratory tract
What is the most common cause of bronchiolitis?
Respiratory syncytial virus
What complications can mumps cause?
Orchitis, epididymitis, and infertility
What pigments does Pseudomonas aeruginosa produce?
Various pigments
Is Pseudomonas aeruginosa an opportunistic pathogen?
Yes
What are the optimum temperatures for Pseudomonas aeruginosa growth?
37°C and 42°C
What type of bacteria is Pseudomonas aeruginosa?
Gram-negative aerobic bacillus
What cell layers can human herpesviruses infect?
Many different cell layers
What type of infection does HSV establish?
Lytic, latent, and recurrent infections
Which herpesviruses are lymphotropic?
Cytomegalovirus (CMV) and Epstein-Barr Virus (EBV)
Name human coronaviruses.
HCoV-NL63, HCoV-OC43, HCoV-229E, HCoV-HKU1
Is HCoV-RNA a designated human coronavirus?
No
Name slow virus diseases.
Fatal Familial Insomnia (FFI), Kuru, Creutzfeldt-Jakob Disease (CJD), Progressive Multifocal Leukoencephalopathy (PML)
Name viruses released without cell lysis.
Retroviruses, Papillomaviruses, Herpesviruses, Orthomyxoviruses
What is the most virulent strain of H. influenzae?
H. influenzae type b
What phenomenon does H. influenzae exhibit around Staphylococcus aureus?
Satellite phenomenon
How many antigenic serotypes does H. influenzae have?
Six (a–f)
What test detects all capsular serotypes of H. influenzae?
Rapid latex agglutination test
What is Actinomyces spp. associated with?
Intrauterine device use
What condition requires prolonged treatment in bacterial associations?
Suppurative granuloma
What can Nocardia spp. cause?
Mycetoma
What feature is present in Corynebacterium diphtheriae?
Mycolic acids
What is the function of glycoprotein 41 (gp41)?
Aids in fusion of the virus with host cells
What protein is used to confirm HIV diagnosis?
P24 capsid protein
What disease affects birds due to Aspergillus?
Turkey X disease
What is a manifestation of aspergillosis?
Allergic bronchopulmonary aspergillosis
What refers to a fungal ball typically found in the lungs?
Aspergilloma
What are the infectious particles of Chlamydia called?
Elementary bodies
Are vaccines available for syphilis?
No
What heals spontaneously in syphilis?
Chancres
What Brucella species cause mild infections?
Brucella abortus and Brucella canis
What type of pathogens are Brucellae?
Facultative intracellular pathogens
What is the structure of poxvirus?
DNA-containing viruses with a central dumbbell-shaped core enclosed by an envelope