- may involve some self-assembly AND may involve the use of scaffolds.
- randomly bump into the bacteria AND attach to proteins or carbohydrates on the bacterial surface
- produced in a sequential manner AND used to customize the cell for viral production
- may have a persistent infection AND may be a source of infection.
- differ because bacteriophages leave the capsid outside the cell, while animal virus entry involves the entry of the whole nucleocapsid.
- (all correct)-are extruded.-contain a positive-sense DNA strand.-have their DNA transformed to double-stranded DNA before replication and transcription occur.
- may be lysogenic AND enters a lysogenic or lytic life cycle shortly after entering the host cell
- may be used to grow viruses AND can be cultivated in vitro indefinitely.
- (all correct)-replicate by converting normal host proteins into prion proteins. -responsible for "mad cow disease" can cause a similar disease in humans.-can be transmitted by consumption of dried or cooked food.that cause Spongiform Encephalopathy have the same amino acids but different folding properties from PrPc.
- No, because the virus would depend too much on having the active machinery of a living cell for its replication. Without the ability of the cell to try to replace what is lost/damaged/used as the virus goes through its life cycle, the virus couldn't reproduce effectively.
- (all correct)-the majority of phages are temperate.-when integrated into host DNA, the phage DNA is called a prophage. -lambda is a good example of a temperate phage.
- are immune to infection by the same virus AND may have new properties.
- (all correct)-is replicated.-is transcribed.-may get degraded by bacterial nucleases.
- involves the transfer of a few specific genes, utilizes a defective virus AND only involves genes near the viral DNA integration site.
- A virus that has lost some of its genetic material, and therefore cannot replicate within a new target cell
- have an outer lipid bilayer membrane containing various proteins
- probably keep the numbers of bacteria in check AND are active in passing DNA from one bacterium to another
- is called a capsid, protects the nucleic acid, AND is involved in the recognition of host cell receptors by non-enveloped viruses.
- attachment, penetration, transcription, replication of nucleic acid and protein, assembly, release.
- FSME = Frühsommer- Meningo-Enzephalitis, Zeckenenzephalitis Impfung