Viruses (Leaving Cert Biology): Flashcards
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What is the cellular structure of viruses?
What is the cellular structure of viruses?
Non-cellular (not made of cells)
Size of viruses compared to bacteria
Size of viruses compared to bacteria
50 times smaller than bacteria
Two main components of virus structure
Two main components of virus structure
Protein coat (capsid) and nucleic acid core
What is a capsid?
What is a capsid?
Outer protein coat protecting genetic material
Types of genetic material in viruses
Types of genetic material in viruses
DNA or RNA (never both)
Primary function of viruses
Primary function of viruses
Replicate by hijacking host cell machinery
Where can viruses replicate?
Where can viruses replicate?
Only inside living host cells
Three main virus shapes
Three main virus shapes
Round (spherical), rod (helical), and complex
Example of spherical virus
Example of spherical virus
Influenza virus
Example of rod-shaped virus
Example of rod-shaped virus
Tobacco mosaic virus
Example of complex virus
Example of complex virus
Bacteriophages
Human viral diseases (examples)
Human viral diseases (examples)
Flu, measles, hepatitis, AIDS, Ebola, COVID-19
Example of plant virus disease
Example of plant virus disease
Tobacco mosaic disease
Use of bacteriophages
Use of bacteriophages
Control harmful bacterial infections
Myxoma virus use in Australia
Myxoma virus use in Australia
Biological control of rabbit population