Question

1. viruses can cause disease by:

a) releasing toxins into the bloodstream
b) invading and hijacking target cells
c) using human cells as food
d) producing antibiotics
answer: _________

1. which of the following diseases is caused by a virus?

a) tuberculosis
b) influenza
c) strep throat
d) lyme disease
answer: _________

Explanation:

Question 12

• Option a: Bacteria (not viruses) often release toxins. Viruses don't release toxins in this way.
• Option b: Viruses invade host cells and use the cell's machinery (hijack) to replicate, which can cause cell damage and disease.
• Option c: Viruses don't "eat" human cells; they replicate within them.
• Option d: Bacteria or fungi produce antibiotics, not viruses.

• Option a: Tuberculosis is caused by the bacterium Mycobacterium tuberculosis.
• Option b: Influenza (flu) is caused by the influenza virus.
• Option c: Strep throat is caused by the bacterium Streptococcus pyogenes.
• Option d: Lyme disease is caused by the bacterium Borrelia burgdorferi (transmitted by ticks).

Answer:

b) Invading and hijacking target cells

Question 13