Answer:
The correct answer is B. The virus can infect the host.
Explanation:
- As the host and the virus both remain in the agar plate, the virus is capable of infecting the host cells.
- The host cell multiplies and grows by utilising the nutrient from the agar medium.
- After the virus particles infect the host, they replicate inside the host and produce new progeny virions which get released out of the host cell by killing it.
- The newly formed virions infect other host cells and the process continues.
- The killing of the host cells by the viruses result in the generation of clear zones on the agar plate which is also known as the zone of exclusion.
- In the zone of exclusion region, the host cells have been killed by the viruses.
Chargaff's law is a rule that in DNA there is always equality in quantity between the bases A(adenine) and T(thymine) and between bases G(guanine) and C(cytosine). They were discovered by Austrian chemist named Erwin Chargaff. Composition of DNA varies from one species to another.
Atherosclerosis is a progressive disorder that results from the inflammation, rupture, or erosion of atheromatous plaque in the coronary arteries due to the presence of some heavy blockage materials.
Coronary arteries are the path that supply blood to the heart muscle. Due to high cholesterol and high blood pressure, the inner wall of Coronary arteries becomes harder and blocks the passage of blood to the heart, which gradually causes the erosion of atheromatous plaque. The eroded materials will collect and one place and block the passage completely, and the person may die.
So this kind of progressive disorder is known as Atherosclerosis.
Learn more about atherosclerosis here
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