Biology Unit 2: Tree of Life: Prokaryotes & Viruses

Which type of organism is considered the earliest form of life on Earth?

• Viruses

• Prokaryotes

• Eukaryotes

• Fungi

True or False: Viruses are considered living organisms because they can reproduce on their own.

• True

• False

Prokaryotes lack which of the following?

• DNA

• Ribosomes

• A nucleus

• Cell membranes

The two main domains of prokaryotes are Bacteria and (a)   .

Which domain of prokaryotes is known for living in extreme environments like hot springs and salt lakes?

• Bacteria

• Archaea

• Eukarya

• Viruses

Which macromolecule is most important for the genetic information of both prokaryotes and viruses?

• Protein

• Lipid

• DNA or RNA

• Carbohydrate

Tags

NGSS.HS-LS3-2

Viruses reproduce by:

• Binary fission

• Photosynthesis

• Hijacking a host cell's machinery

• Mitosis

A virus’s protein coat is called a (a)   .

Which process describes when a virus integrates its DNA into the host’s genome and stays dormant?

• Lytic cycle

• Lysogenic cycle

• Binary fission

• Photosynthesis

True or False: Some prokaryotes can live without oxygen.

• True

• False

Tags

NGSS.HS-LS2-3