Viruses

Which is not one of the 6 characteristics of all living things?

• Needs oxygen

• Grows and Develops

• Reproduces

• Excretes

What is the first step of the virus reproduction cycle?

• The viruses genetic material (DNA) starts to take over the functions of the cell
• The host cell bursts open, releasing the new viruses
• The virus injects its genetic material into the cell
• A virus attaches to the surface of a host cell

Which of the following is an example of how living things are classified?

• Differences
• Similarities
• Movement Method
• Habitat Location

Tags

NGSS.MS-LS4-2

What is the last step in the viral reproduction cycle?

• A virus attaches to the surface of a host cell
• The proteins and genetic material start to assemble in the cell
• The host cell bursts open, releasing the new viruses
• The virus injects its genetic material into the cell

Reasons that viruses are considered to be nonliving is because

• They have no metabolism

• They cannot reproduce on their own

• They cannot make proteins

• all of the above

A(n) _____ is a virus that enters a bacterial cell.

• endospore

• virion

• plasmid

• bacteriophage

When a virus invades a living cell, its _______

takes over the cell's functions.

• surface proteins

• genetic material

• capsid

• lipid envelope

What do viruses have in common with living cells? They both

• store genetic information

• have chloroplasts

• use glucose for cellular respiration

• have nuclei

The genetic material of a virus is in the form of

• RNA
• DNA
• either RNA or DNA

Lysis is

• rupture of a cell membrane

• replication of a virus

• multiplication of the genetic material in the cell

• the same as lysogenic