2. Viruses and Viral replication Flashcards
What are viruses
Nott living cells, just nucleic acids with a protein coat
How do they reproduce
Invade and reproduce inside other cells known as host cells
Do they have membrane, cytoplasm or ribosomes?
NO
What do they have?
- Capsid(protein coat)
- DNA
- Attachment proteins
- Sheath
How do we remember Viral replication?
A- Attachment
E- Entry
S- Synthesis
A- Assembly
R- Release
What happens in the first phase (A)
Attachment - Virus attaches to host cell receptor proteins
What happens in the second phase (E)
Entry - Genetic material is released into the host cell with capsid left behind
What happens in the third phase (S)
Synthesis - Genetic material and proteins are replicated by host cell receptor
What happens in the fourth phase (A)
Assembly - Viral components are assemble
What happens in the fifth phase (R)
Release - Replicated viruses released from host cells - often results in cell death
What does it look like?
What happens in the fifth phase (R)
Release - Replicated viruses released from host cells - often results in cell death