1st 9 Weeks Retest 17-18

Viruses can be transmitted in a variety of ways. The virus that causes SARS (severe acute respiratory syndrome) can be transmitted when an infected person coughs or sneezes. This virus is transmitted in a manner most similar to the transmission of —

• smallpox
• influenza
• west nile virus
• AIDS

Viruses can only replicate-

• inside a host cell
• in another virus
• outside the nucleus
• between cells

A student prepared the following list of characteristics about a cellular organelle. The characteristics listed below apply to which organelle?

• cell wall
• chloroplast
• mitochondria
• nucleus

The diagram represents a-

• plant cell
• animal cell
• bacteria cell 

The diagram represents a-

• carbohydrate
• lipid
• protein
• nucleic acid

Which of the structures shown in the picture control all the cell activities that are to be released from the cell?

• 1
• 2
• 3
• 5

Plant cells are much less flexible than animal cells. Which cellular structure in plant cells is most responsible for this characteristic?

• vacuole
• cell wall 
• chloroplast 
• cell membrane

A prokaryotic cell contains all of the following parts except – 

• cell membrane
• cytoplasm
• nucleus
• DNA

Which of the following structures contains digestive enzymes that allow the cell to break down damaged organelles?

• golgi apparatus
• lysosome
• ribosome
• nucleus

Scientists examining steam vents deep in the ocean for signs of primitive life identify an organism similar to prokaryotes. Which characteristic would most likely support this identification?

• formation of colonies
• a cell wall 
• a single-celled organism
• lack of a nucleus