Term
| Who first proposed the term VIRUS? |
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Definition
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Definition
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Term
| Can viruses exit independently? |
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Definition
NOPE!
so they aren't considered living things but since they can direct life processes they are often considered more than lifeless molecules |
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Term
| Obligates intracellular parasites |
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Definition
| viruses are! have to infect other cells |
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Term
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Definition
| they invade a specific host cell and instruct its genetic and metabolic machinery to make and release new viruses |
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Term
| What is the molecular structure of virus? |
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Definition
| composed of regular, repeating subunits that give rise to their crystalline (regular and repeating) appearance |
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Term
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Definition
Only contain those parts needed to invade and control a host cell
1. Capsid
2. Envelope- not found in all viruses
3. Core- genetic material (DNA or RNA) |
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Definition
not all have envelopes!
external coating |
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Term
| If no envelope what are viruses call? |
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Definition
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Term
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Definition
nucleic acid
either DNA or RNA |
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Term
| What is the capsid and the nucleic acid together called |
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Definition
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Term
| what is a fully formed virus that is able to establish an infection in host cell |
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Definition
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Term
| What is the viral capsid made of? |
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Definition
| identical subunits called capsomers- protein molecules |
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Term
| What are the three of viral capsids? |
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Definition
| Helical, Icosahedral and Complex |
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Term
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Definition
| three dimensional viral capsid |
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Term
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Definition
found in bacteriophages.
shape is not symmetrical.
contain tail fibers and capsid head.
look like spiders. |
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Term
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Definition
| viruses that infect bacteria |
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Term
| Whats up with viral envelopes |
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Definition
| envelopes viruses take a bit of the host cell membrane in the form of an envelope |
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Term
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Definition
| Glycoproteins on the envelope of the virus... they are essential for attachemnt |
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Term
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Definition
the h and the n stand for
Hemaglutinin
Neuraminidase
which are types of spikes |
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Term
| What are the functions of the viral capsid/envelope |
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Definition
1. Proteins nucleic adics
2. Help introduce the viral DNA or RNA into a suitable host cell
3. Stimulate the immune system to produce antibodies that can protect the host cells against future infections |
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Term
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Definition
| the sum total of the genetic information carried by an organism |
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Term
| Number of viral genes? (adjective) |
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Definition
| relatively small, only have the genes necessary to invade host cells and redirect their activity |
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Term
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Definition
single stranded DNA
exceptions to typical |
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Definition
double stranded RNA
exceptions to typical |
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Definition
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Term
| Positive sense RNA viruses? |
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Definition
| genomes that are ready for immediate translation into proteins |
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Term
| Negative sense RNA viruses? |
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Definition
| genomes have to be converted into the proper form to be made into proteins |
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Term
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Definition
| individual genes exist on separate pieces of RNA |
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Term
| Orthomyxoviruses AKA influenza... tell me about it |
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Definition
| RNA virus, enveloped, single stranded, segmented genome |
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Term
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Definition
| RNA virus, enveloped, single straned genome encodes reverse transcriptase |
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