Unit 8: Classification, Viruses, and Kingdoms

Front

What are viruses?

Back

Viruses are microscopic infectious agents that cannot replicate on their own and require a host cell to reproduce. They are not considered living cells.

Front

What domain of life includes organisms that can survive in extreme environments?

Back

Archaea.

Front

What type of organisms are classified as prokaryotic?

Back

Organisms whose cells lack a nucleus, such as bacteria.

Front

True or False: All living things are made of one or more cells.

Back

True.

Front

What takes over a cell's functions when a virus invades it?

Back

The genetic material of the virus.

Front

Define prokaryotic cells.

Back

Prokaryotic cells are simple, single-celled organisms that do not have a nucleus or membrane-bound organelles.

Front

What is the main difference between prokaryotic and eukaryotic cells?

Back

Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells have a nucleus and organelles.

Front

What are the three domains of life?

Back

Bacteria, Archaea, and Eukarya.

Front

What is a virus made of?

Back

A virus is made of genetic material (DNA or RNA) surrounded by a protein coat.

Front

How do viruses reproduce?

Back

Viruses reproduce by infecting a host cell and using the host's cellular machinery to replicate their genetic material and produce new virus particles.