Viruses (Edexcel GCSE Biology): Flashcards
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12 cards from this deck
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Practise the cards
12 cards from this deck
Why do viruses need host cells?
Why do viruses need host cells?
They cannot reproduce independently
Two main viral lifecycle pathways
Two main viral lifecycle pathways
Lytic pathway and lysogenic pathway
What does the virus protein coat do?
What does the virus protein coat do?
Protects genetic material
Are viruses living or non-living?
Are viruses living or non-living?
Non-living pathogens
How virus binds to host cell receptors
How virus binds to host cell receptors
Complementary in shape
What is lysis?
What is lysis?
Cell bursting (in lytic pathway)
What virus injects into host cell
What virus injects into host cell
Genetic material (DNA or RNA)
What host produces in lytic cycle
What host produces in lytic cycle
Viral DNA/RNA and viral proteins
Norovirus lytic cycle time
Norovirus lytic cycle time
12 hours
Ebola lytic cycle time
Ebola lytic cycle time
Several days
Where viral DNA goes in lysogenic pathway
Where viral DNA goes in lysogenic pathway
Integrates into host cell's DNA
State of virus in lysogenic pathway
State of virus in lysogenic pathway
Dormant