Bacteria & Viruses

• Viruses are ​ (a)   particles that are composed of ​ (b)   enclosed  in a ​ (c)   coat.

• ​ (d)   than the smallest bacterium

• Nonliving
• nucleic acids
• protein
• Smaller

• Viruses ​ (a)   carry out respiration, grow, or develop

• DO ​ (b)   , but ​ (c)   a living

   cell to replicate.

• Do NOT
• replicate
• need

Viruses are not living things

• True

• False

Viruses can carry out respiration, grow, or develop on their own, without a living cell as a host?

• True

• False

The Virus must complete the following steps :

1. ​ (a)   a host cell

2. ​ (b)   to the host cell

3. ​ (c)   the host cell and take over its ​ (d)  

• recognize
• Attach
• Enter
• metabolism

Lytic Cycle

• Virus capsid ​ (a)   to the host cell

• ​ (b)   its nucleic acid into the host

• Host’s metabolic machinery makes​ (c)   nucleic acids and proteins

• Host cell ​ (d)   and releases new virus particles

• Host cell​ (e)  

• attaches
• injects
• viral
• breaks open
• dies

Lysogenic Cycle

• Virus capsid ​ (a)   to host cell

• Host’s plasma membrane ​ (b)   virus making a vacuole

• Virus’s DNA is ​ (c)   into the host’s chromosome making a ​ (d)  

• Every time the host cell reproduces, the provirus is ​ (e)   .

• attaches
• surrounds
• integrated
• provirus
• replicated

Match the following

• Lytic

• 
• Lysogenic

• 
• Lytic

• 
• Lytic

• 

Match the following

• HIV

• 
• Chicken pox

• 
• Herpes simplex 1

• 

• HIV

• Infects ​ (a)  

• Host cell function ​ (b)   because virus is a ​ (c)   ; Person may not appear sick, but can ​ (d)   the virus in ​ (e)  

• white blood cells
• normally
• provirus
• transmit
• body fluids