Classification Clades and Viruses

What do viruses need to reproduce?

• they need genetic material
• They need a host cell
• They need  bacteria
• They need insulin

One way a virus can be classified by its type of

• mitochondria

• cell membrane

• nucleic acid

• carbohydrates

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

• endospore
• decomposer
• plasmid
• bacteriophage

What part of a virus is the protein capsule that surrounds and protects the genetic material (DNA/RNA)?

• tail

• nucleus

• capsid

• glycoprotein

The reason that viruses are considered to be nonliving is because

• They are not cellular
• They cannot reproduce on their own
• They cannot make proteins
• all of the above

Viruses are cells. 

• True 
• False

A capsid is

• a structure that directly causes cell lysis
• the type of virus that attacks bacteria
• the genetic material of a virus
• the protein coat of a virus

All viruses have at least the following:

• nucleic acid and a sheath

• protein coat and tail fibers

• protein coat and a base plate

• protein coat and nucleic acid

In a bacteriophage, the collar does this.

• helps attach to a cell

• connects the "head" to "tail" and helps produce the nucleic acid

• contracts to push out the nucleic acid

• gives support and helps attach to a cell

In a bacteriophage, the nucleic acid does this.

• contains information on replication, size, etc. of the virus

• provides support

• protects the "tail" of the bacteriophage

• does exactly what the capsid does