Multiple Choice
Which of the following statements best supports the argument that viruses are nonliving?
88
views
1. Introduction to Microbiology
Acellular Infectious Agents: Viruses, Viroids & Prions
Multiple Choice
All of the following organisms produce exotoxins except:
A
Fungi
B
Protozoa
C
Bacteria
D
Viruses
Verified step by step guidance1
Step 1: Understand what exotoxins are. Exotoxins are toxic proteins secreted by certain living bacteria into their surrounding environment. They are typically heat-labile and highly potent.
Step 2: Identify which groups of organisms are known to produce exotoxins. Bacteria are well-known producers of exotoxins, which contribute to their pathogenicity.
Step 3: Consider fungi and protozoa. While fungi and protozoa can produce various harmful substances, they generally do not produce exotoxins in the same way bacteria do.
Step 4: Analyze viruses. Viruses do not produce exotoxins because they rely on host cells to replicate and do not secrete proteins independently; their pathogenicity is due to other mechanisms.
Step 5: Conclude that among the options, viruses are the organisms that do not produce exotoxins, making them the correct answer to the question.
Related Videos
Related Practice
