Viral Life Cycle and Host Interaction

The video tutorial by Malinki on the 'Voice of Malinki' channel explains the lytic cycle of viruses, specifically focusing on bacteriophages. It covers the process of virus entry into a bacterial host cell, attachment, and insertion of viral DNA. The tutorial details how the viral DNA hijacks the host's cellular mechanisms to synthesize viral proteins and DNA, leading to the assembly of new viruses. Finally, it describes the lysis of the host cell, releasing new viruses to infect other cells.

What are the two main cycles a virus can follow once it enters a host?

• Transcription and translation

• Mitosis and meiosis

• Photosynthesis and respiration

• Lytic and lysogenic cycles

During the lytic cycle, what is the first step after the virus attaches to the host cell?

• The host cell produces antibodies

• The virus becomes dormant

• The viral DNA is inserted into the host cell

• The host cell divides

What happens to the host cell's chromosome during the lytic cycle?

• It is replicated

• It is fragmented and degraded

• It becomes a part of the viral DNA

• It remains unchanged

Which process is hijacked by the virus to produce its own DNA and proteins?

• Photosynthesis

• Cellular respiration

• Replication, transcription, and translation

• Mitosis

What is the result of the viral DNA replication and protein synthesis in the host cell?

• The virus is destroyed

• The host cell repairs its DNA

• New viral particles are assembled

• The host cell becomes immune to the virus

What happens to the host cell at the end of the lytic cycle?

• It repairs itself and survives

• It is lysed, releasing new viruses

• It divides into two new cells

• It becomes a permanent host for the virus

What is the term used to describe the breaking down of the host cell in the lytic cycle?

• Fusion

• Lysis

• Endocytosis

• Mitosis

What is the primary purpose of the lytic cycle for a virus?

• To protect the host cell from other viruses

• To replicate and spread to new host cells

• To produce energy for the host cell

• To integrate into the host's DNA

How does the lytic cycle contribute to the spread of viruses?

• By stopping other viruses from entering

• By releasing new viruses into the environment

• By creating antibodies

• By making the host cell immune

What is the significance of the lytic cycle in viral infections?

• It helps the host cell to grow

• It allows the virus to replicate and spread

• It prevents other viruses from entering the host

• It cures the host cell of the virus