Correct Answer: Option B

Explanation

Viruses are considered parasitic because they require a host cell to replicate. They do this by injecting their genetic material into the host cell and using the cell's machinery to replicate.

There is an explanation video available below.

• a gaseous hydrocarbon contains 80 carbon and 20 hydrogen.one dm^3 of the compound at s.t.p weigh 1.35g. find its molecular... Answer this

  3 Answers   ·   Chemistry   ·   3 years ago
• A converging glass lens will refractive index 1.52 has a focal length of 40cm in air. Find its focal length... Answer this

  0 Answers   ·   Physics   ·   39 minutes ago
• a stand by generator is connected to 40w lamps and a musician's 600w amplifier system. How energy is used if... Answer this

  1 Answers   ·   Physics   ·   1 hour ago