Question

What are viruses? Name some common diseases in human caused by virus.​

Answer 1

Answer:

A virus is a small parasite that cannot reproduce by itself. Once it infects a susceptible cell, however, a virus can direct the cell machinery to produce more viruses. Most viruses have either RNA or DNA as their genetic material. The nucleic acid may be single- or double-stranded.

Explanation:

Spread of viruses

Route Examples

Skin contact HPV (warts)

Respiratory Cold virusues, influenza, measles, mumps, rubella

Faecal-oral Polio, echo, Coxsackie, Hepatitis A, Rotavirus

Milk HIV, HTLV-1, CMV

Answer 2

Answer:

the organisms whics can be seen and they are lying between the category off living and non-living they are called sub organisms

Explanation:

ex tuberculosis, chickenpox f