Viruses and Cells Review

Cells differ from viruses in that only cells -

• use genetic material.

• are microscopic structures.

• contain cytoplasm.

• have protective covering.

Viruses have structures that allow them to inject their genetic material directly into the DNA of the host cell. This strategy benefits the virus in that –

• the host cell is turned into a virus.

• mutations are introduced into the host cell.

• it is able to transform into a host cell.

• the virus uses the host’s machinery to replicate.

Tags

NGSS.HS-LS3-2

The presence of which of the following structures could be used to distinguish a cell from a virus?

• Genetic material

• Protective covering

• Cytoplasm

• Protein Coat

The viral structure responsible for recognizing specific host cells is –

• a surface protein.

• genetic material.

• a retrovirus.

• a bacteriophage.

A bacteriophage virus causes infection in bacteria by injecting which of the following?

• DNA

• Hormones

• Proteins

• Lipids

Which of the following characteristics is shared by viruses and living cells? Both viruses and living cells –

• have a nucleus, as well as a cell wall.

• contain nucleic acids such as DNA or RNA.

• can replicate independently of a host cell.

• use organelles to perform life functions.

Which organism contains a cell membrane, ribosomes, a cell wall, a DNA loop, and has no nucleus?

• Virus

• Bacteria

• Plant cells

• Animal cells

Tags

NGSS.MS-LS1-1

Which two organisms are eukaryotic , contain a cell nucleus, and are considered living?

• viruses and plant cells

• bacteria and animal cels

• plant and animal cells

• viruses and animal cells

Which organism requires a host cell for reproduction?

• bacteria

• plant cells

• viruses

• animal cells

Which organism is pictured?

• bacteria

• plant cell

• virus

• animal cell