P&E and Viruses

Front

What is a prokaryote?

Back

A prokaryote is a single-celled organism that lacks a nucleus and other membrane-bound organelles. Examples include bacteria.

Front

What is the cell theory?

Back

The cell theory states that all living organisms are made of cells, and that cells are the basic unit of life.

Front

What is a capsid?

Back

A capsid is the protein shell of a virus that encases its genetic material and protects it from the environment.

Front

What is the function of a nuclear membrane?

Back

The nuclear membrane surrounds the nucleus in eukaryotic cells, protecting the genetic material and regulating the passage of substances in and out of the nucleus.

Front

How do vaccines work?

Back

Vaccines introduce weakened or inactive parts of a virus to stimulate the immune system to develop antibodies without causing the disease.

Front

What is viral replication?

Back

Viral replication is the process by which a virus enters a host cell and uses the host's cellular machinery to produce new virus particles.

Front

What is the role of antibodies in the immune response?

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Antibodies are proteins produced by the immune system that identify and neutralize foreign objects like viruses and bacteria.

Front

What is the difference between a virus and a bacterium?

Back

Viruses are non-living entities that require a host to replicate, while bacteria are living organisms that can reproduce independently.

Front

What is genetic mutation?

Back

Genetic mutation is a change in the DNA sequence of an organism, which can lead to variations in traits and can affect how viruses replicate.

Front

What is the significance of the envelope in some viruses?

Back

The envelope is a lipid layer that surrounds some viruses, helping them to enter host cells and evade the immune system.