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Decker Bio B

Viruses and Prokaryotes Chapter 18.1 and 18.2

Prokayotes belonging to one of three domains of life Archaea
nonpolar molecules made of carbon, hydrogen and oxygen Lipid
condition of constant internal conditions homeostasis
A doctor may prescribe this if you have a bacterial infection. antibiotic
You may receive this in the form of a shot to prevent getting the flu vaccine
Any poison produced by an organism, including the oil produced by poison ivy, is this. toxin
Any living organism or particle that can cause an infectious disease is called a pathogen
This is a single celled organism. They are living things-they contain DNA, use nutients and energy, they grow and reproduce and respond to their environment. Bacteria
This is an infectious particle made only of a piece of DNA or RNA surrounded by a protein coat. They cannot reproduce on their own. They need living cells to help them reproduce. Virus
This is a piece of single-stranded RNA without a protein coat. They cause diseases in plants, and are passed through seeds and pollen. They cannot reproduce without the help of living cells. Almost always use plants as a host. Viroids
An infectious particle made only of proteins. They are always deadly because the body has no immune response against a protein. They can cause other proteins to fold incorrectly. Prion
Viruses are made up of two main parts: a piece of genetic material, and a protein covering, or coat called a capsid
a group of viruses that infect bacteria. Bacteriophages
In which cycle of infection are new viral particles released, lytic or lysogenic? Lytic infections.
Viral DNA combined with the host cell's DNA is called prophage
A virus is made of two main parts, genetic material and a capsule
In this infection the viral DNA becomes part of the host cell's DNA and the host cell is not destroyed. lysogenic infection
This this infection the host cell bursts, releasing new viral offspring into the host's system. lytic infection.
What do viruses need to reproduce? living cells
What are the main difference between the lytic and lysogenic cycles of infection? Lytic cycle results in the destruction of infected cells Lysogenic cycle doesn't destroy the host cells.
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