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The continental drift says that the world was made up of a single continent, now divided by the plate-tectonics movement. The plate-tectonics, so, explains how the continents are drifting.
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Answer:
Option C, varicella-zoster virus
Explanation:
The synonym for varicella-zoster virus is VZV and it is responsible for causing chicken pox in primary infection and shingles after the reactivation of latent VZV infection
It is a DNA virus that belong to the group of herpesvirus. All herpesviruses have the capability to persists in the body after primary infection as latent infection. These viruses survive for a short duration in the environment.
Hence, option C is correct.
Answer:
The following that is true about the statements is letter A, Both (A ) and (R) are true, but (R) is not the correct explanation of A.
Explanation:
A mutagen is any physical, chemical or biological agent that, when exposed to cells, is capable of inducing a mutation, that is, damage to the DNA molecule that is not repaired at the time of cell replication, and is passed on to subsequent generations.
With that being said, Radiation, UV light, and chemicals are exemples of mutagens.
Examples of mutation would be: gene or chromosomal mutations. Gene mutations can be by substitution, insertion or deletion; on the other hand, chromosomal mutations can be structural or numerical.
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AIDS patients would be most likely to be infected with aspergillus.
<h3>Aspergillus:</h3>
The majority of persons who get this ailment do so by inhaling mold spores. Spores can also enter the body through a cut or open wound, but this happens less frequently. People with cystic fibrosis or asthma are more likely to develop allergic bronchopulmonary aspergillosis.
Other than your lungs, Aspergillus can infiltrate other parts of your body, like your sinuses. The fungus in your sinuses might result in a stuffy nose and occasionally discharge that may contain blood. There may also be fever, face pain, and headache.
The fungus can develop on dead leaves, grain that has been kept, compost piles, or other rotting vegetation. Additionally, it is present on marijuana leaves. Despite the fact that aspergillus is something to which most people are frequently exposed, aspergillus infections in immune-suppressed individuals are quite uncommon.
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