Unit 3.4 Online Review

Front

What is the lytic cycle of a virus?

Back

The lytic cycle is a viral reproductive cycle where the virus infects a host cell, replicates quickly, and causes the cell to burst, releasing new viruses.

Front

What is the lysogenic cycle of a virus?

Back

The lysogenic cycle is a viral reproductive cycle where the virus integrates its genetic material into the host cell's DNA, remaining dormant until triggered to enter the lytic cycle.

Front

What happens if a virus receptor protein is not complementary with the host cell?

Back

The virus will not attach to the host cell, preventing infection.

Front

What are antibiotics effective against?

Back

Antibiotics are effective against bacteria, not viruses.

Front

Why do we need to update vaccines for the influenza virus annually?

Back

The influenza virus mutates annually, leading to new strains that may not be covered by last year's vaccine.

Front

How do vaccines work to prevent viral infections?

Back

Vaccines stimulate the immune system to recognize and fight off viruses by preventing them from attaching to host cells.

Front

What is a virus?

Back

A virus is a microscopic infectious agent that can only replicate inside the living cells of an organism.

Front

What is the role of receptor proteins in viral infection?

Back

Receptor proteins on the virus surface allow it to attach to specific host cells, initiating infection.

Front

What is the difference between a virus and a living cell?

Back

Viruses cannot reproduce or carry out metabolic processes on their own; they require a host cell.

Front

What is mutation in the context of viruses?

Back

Mutation refers to changes in the virus's genetic material, which can lead to new strains and affect vaccine effectiveness.