Multiple Choice
Which of the following is a category of microbial identification methods?
28
views
1. Introduction to Microbiology
Introduction to Microbiology
Struggling with Microbiology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following is not a normal portal of exit for an infectious disease?
A
Blood
B
Urine
C
Saliva
D
Stomach acid
Verified step by step guidance1
Understand the concept of 'portal of exit' in infectious diseases: it refers to the route through which a pathogen leaves the host to spread to others.
Review common portals of exit, which typically include blood, urine, saliva, respiratory droplets, feces, and skin lesions.
Analyze each option given: blood, urine, and saliva are all recognized portals of exit because pathogens can be transmitted through these fluids.
Consider 'stomach acid' as a potential portal of exit. Since stomach acid is a digestive secretion inside the body and not a route through which pathogens exit the host, it is not a normal portal of exit.
Conclude that the correct answer is the option that does not serve as a pathway for pathogens to leave the host, which in this case is stomach acid.
1:29mWatch next
Master Introduction to Microbiology Channel with a bite sized video explanation from Jason
Start learningRelated Videos
Related Practice
Introduction to Microbiology practice set
Problem sets built by lead tutorsExpert video explanations