9 Questions
What is the specific mechanism used by the virus to penetrate the host cell membrane?
Endocytosis
What is the purpose of the uncoating stage in the replication cycle?
To release the viral genome into the host cell
What is the role of the host cell's machinery in the transcription stage?
To transcribe the viral genetic material into mRNA
What is the final stage of the replication cycle?
Release
What is the purpose of the replication stage in the replication cycle?
To replicate the viral genome using the host cell's machinery
What is the role of the viral mRNA in the translation stage?
To be translated into protein using the host cell's ribosomes
What is the specific mechanism used by the virus to attach to the host cell?
Hemagglutinin
What is the purpose of the assembly stage in the replication cycle?
To assemble new viral particles using the viral proteins and genome
What is the consequence of the release stage in the replication cycle?
The host cell dies, releasing new viral particles
Study Notes
Replication Cycle of Viruses
The replication cycle of viruses is a complex process that involves several stages:
Attachment
- The virus attaches to the host cell using its surface proteins (e.g., hemagglutinin in influenza)
- The attachment is specific to the host cell and virus type
Penetration
- The virus penetrates the host cell membrane using various mechanisms (e.g., endocytosis, membrane fusion)
- The virus releases its genetic material (e.g., DNA, RNA) into the host cell
Uncoating
- The virus releases its genetic material from the protein coat (capsid)
- The genetic material is now free to interact with the host cell machinery
Transcription
- The viral genetic material is transcribed into messenger RNA (mRNA) using the host cell's machinery
- The mRNA is translated into protein using the host cell's ribosomes
Translation
- The viral mRNA is translated into protein using the host cell's ribosomes
- The proteins are used to replicate the viral genome and assemble new viral particles
Replication
- The viral genome is replicated using the host cell's machinery
- The replicated genome is used to assemble new viral particles
Assembly
- The viral proteins and genome are assembled into new viral particles
- The assembly process is specific to the virus type
Release
- The new viral particles are released from the host cell through lysis (cell death) or budding
- The released viral particles can infect other host cells, repeating the replication cycle
Learn about the complex process of virus replication, including attachment, penetration, uncoating, transcription, translation, replication, assembly, and release. Understand how viruses interact with host cells and replicate their genetic material.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
