Viruses are microscopic parasites responsible for a host of familiar – and often fatal – diseases, including the flu, Ebola, measles and HIV. They are made up of DNA or RNA encapsulated in a protein shell andcan only survive and replicate inside a living host, which could be any organism...
hepatitis, herpes, and even cancer. They are an extremely small foreign organism that invade healthy cells, and seek to wreak havoc in a healthy human or animal. Viruses are comprised of either RNA or DNA covered in a protein shell, and cannot reproduce on their own, so they rely on thei...
Viruses are microscopic parasites responsible for a host of familiar – and often fatal – diseases, includingthe flu,Ebola,measlesandHIV. They are made up of DNA or RNA encapsulated in a protein shell and can only survive and replicate inside a living host, which could be any organism on e...
A virus is made up in a DNA or RNA genome inside a protein shell called? The genetic material of a ___ may be DNA or RNA. a. bacteria b. dinoflagellate c. ciliate d. virus All retroviruses are RNA viruses, but are all RNA viruses retroviruses? All viruses...
Answer:Since viruses are not alive, they rely on host cells to complete their lifecycle. They act like parasites—infecting healthy cells, using them to reproduce, and destroy them when they are done. Viruses are tiny packages ofDNA or RNA (genetic material)that travel in a protein shell. ...
What is a cheat? Cheats are individuals that exploit cooperators, by avoiding paying the cost of cooperation, while still benefiting from the cooperation of others5,6(Box1). Cheating can be thought of as a special form of parasitism, in which the parasite exploits a social trait, benefitting...
A limitation of our concentric shell model of a virion is that it is highly simplified. The real protein capsid charge is pH-dependent. Moreover, the exterior walls of the capsid tend to be oppositely charged, and enveloped viruses such as influenza are characterised by more complex charge dis...
structure must be regular, with each protein subunit occupying a position at least approximately equivalent to that occupied by all other proteins of its class in the final structure (the principle of quasi-equivalence), although some viruses are now known to violate the principle of quasi-...
Any of a heterogeneous class of agents that share three characteristics: (1) They consist of a nucleic acid genome surrounded by a protective protein shell, which may itself be enclosed within an envelope that includes a membrane; (2) they multiply only inside living cells, and are absolutely...
In spherical viruses, the visible shell consists of protein subunits, whereas the nucleic acid is inside the shell but it is not known how it is arranged. Viruses are not cells and have neither the cytoplasm nor the nucleus, but the rhabdoviruses and a few spherical viruses have an outer ...