NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

VIRUSES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Up to what percentage (%) of bacteria are killed by bacteriophages every day.
A
40%
B
35%
C
43%
D
None of the above
Explanation: 

Detailed explanation-1: -Furthermore, they play a major role in regulating natural bacteria populations, with a recent review stating that bacteriophages kill 20-40 percent of all the ocean’s bacteria each day, making them an ecological necessity. Bacteriophages kill bacteria through two sophisticated mechanisms.

Detailed explanation-2: -It is estimated that phages kill and lyse between 15% and 40% of the ocean’s bacteria every day, thereby influencing the ratio of particulate to dissolved carbon, rates of phytoplankton productivity and oxygen production, and perhaps even global climate and weather patterns [4].

Detailed explanation-3: -Even though there are many types of bacteria everywhere, phages only attack some of them. How do phages know which bacteria to kill? It turns out that phages are picky! Each phage is only able to use certain types of bacteria as hosts.

Detailed explanation-4: -Bacteriophages (BPs) are viruses that can infect and kill bacteria without any negative effect on human or animal cells. For this reason, it is supposed that they can be used, alone or in combination with antibiotics, to treat bacterial infections.

There is 1 question to complete.