Which of the following infectious particles do not have protein in their structure?
A. bacteriophages
B. prions
C. animal viruses
D. viroids
E. both prions and viroids
Answer: D
Biology & Microbiology
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Humans are incidental hosts for ________, thus infected humans CANNOT spread the disease
A) Toxoplasma gondii B) Trichomoniasis vaginalis C) Entamoeba histolytica D) Plasmodium vivax
Biology & Microbiology
The last continent to be inhabited by monkeys was:a
South America. b. Africa. c. Europe. d. Asia. e. Antarctica.
Biology & Microbiology
Molecules of extrachromosomal DNA in bacteria are known as
a) Golgi complexes b) lysosomes. c) plasmids. d) ribosomes.
Biology & Microbiology
A complete virus particle is called a ________.
A. nucleocapsid B. virion C. cell D. capsid
Biology & Microbiology