Chapter 8 Flashcards
What are two types of induced mutations ?
Radiation Or Exposure To A Chemical
What are induced mutations ?
Genetic changes that occur due to an influence outside of a cell
What is a mutagen ?
The agent that induces the mutation
What are the three mechanisms in which genes can be transferred from a donor to a recipient ?
Bacterial transformation, transduction, and conjugation
What are the 3 virus shapes ?
Isocahedral, Helical, & Complex
What does a complex virus look like ?
A Isocahedral Nucleocapsid Head & A Helical Protein Tail
Are viruses organisms ?
No, they’re infectious agents
What kind of viruses are more resistant to disinfectants ?
Non-enveloped viruses
How does a virus approach a cell ?
Its spikes attach to a receptor on the host cell
What is the nucleic acid in a virus surrounded by ?
The capsid protein coat
What’s the name of the capsid plus the nucleic acid ?
The nucleocapsid
What are enveloped viruses surrounded by ?
A lipid bilayer
What kind of viruses are spread by insect & can infect different species ?
Arboviruses
How do enteric viruses enter the body ?
Oral-fecal route
What kind of viruses cause zoonoses ?
Zoonotic viruses
