Viruses

1)  It is recommended that people at risk for serious flu complications be vaccinated so that their bodies will produce

• antigens to fight the flu virus
• antibodies against the flu virus
• toxins to fight the infection caused by the flu virus
• antibiotics to reduce symptoms caused by the flu virus

According to cell theory, why are viruses not considered living organisms?

• Viruses cannot reproduce outside a living organism
• Viruses do not contain genetic material
• Viruses cannot cause diseases in other organisms.
• Viruses do not contain organic compounds

Which of the following is incapable of reproducing outside a host cell?

• alga
• mold
• moss
• virus

Most viruses infect a specific kind of cell. Which of the following are infected by the human immunodeficiency virus (HIV)?

• Immune cells
• liver cells
• GABA-receptor cells
• Blood cells

 What is the most common threat to a host organism posed by an invading virus?

• Production of viral fluids in the bloodstream
• Fermentation of acids in the digestive system
• Destruction of cells by viral reproduction
• Stimulation of muscle tone in the heart

Scientists are designing new medicines to fight
infectious diseases caused by viruses. One of the
most effective ways these medicines could limit the spread of the virus within the body would be to –

• prevent viruses from dividing
• burst cells infected with viruses
• stop viruses from attaching to cells
• make it easier for viruses to leave cells

Viruses and cells are different in many ways. 
In which of these ways are viruses and cells most
similar?

• composition of outer covering
• stages of life cycle
• made of genetic material
• stages of reproduction

viruses use host cells to -

• fermentation
• respiration
• reproduction
• antibodies

which of the following illnesses is caused by a virus?

• common cold
• diabetes
• strep throat
• malaria

1)  Which of the following is effective in reducing the number of viral infections

• antibiotics 
• vaccines
• inhalers
• none of the above