Answer the following questions.
a) What are viruses? Name some common diseases in human caused by virus.
b) Explain the formation of curd from the milk.
c) Mention one beneficial effects of bacteria.
Answers
Answer:
(A)
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.Some viral diseases are:
(1) smallpox.
(2) the common cold and different types of flu.
(3) measles, mumps, rubella, chicken pox, and shingles.
(4) hepatitis.
(5) herpes and cold sores.
(6) polio.
(7) rabies.
(8) Ebola and Hanta fever.
Answer:
Viruses are microscopic parasites, generally much smaller than bacteria. They lack the capacity to thrive and reproduce outside of a host body.
Predominantly, viruses have a reputation for being the cause of contagion. Widespread events of disease and death have no doubt bolstered such a reputation. The 2014 outbreak of Ebola in West Africa, and the 2009 H1N1/swine flu pandemic (a widespread global outbreak) likely come to mind. While such viruses certainly are wily foes for scientists and medical professionals, others of their ilk have been instrumental as research tools; furthering the understanding of basic cellular processes such as the mechanics of protein synthesissmallpox.
the common cold and different types of flu.
measles, mumps, rubella, chicken pox, and shingles.
hepatitis.
herpes and cold sores.
polio.
rabies.
Ebola and Hanta fever.
Explanation:
that is the 1 st answer