Which of these is a type of mass movement that is likely to happen after a large amount of rain?

Biology

2 answers:

tiny-mole [99]3 years ago

8 0

I believe it is A, landslide.

yarga [219]3 years ago

8 0

Answer:

A. Landslide

Explanation:

The landslide can be defined as the movement of the mass of land/ rock/ mountain down the slope. The rain can cause water retention in the soil and may result in decreasing the rigidity of the soil. The decrease in the rigidity of the soil may cause the separation of the land particle and result in landslide.

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The nucleoside analogue acyclovir, which is used to treat herpes simplex virus (HSV) infections, lacks a 3′ hydroxyl group (–OH)

Dima020 [189]

Answer:

There won't be any functional viral DNA synthesis

Explanation:

First of all, you must consider that the HSV has a double-stranded, linear DNA genome. Furthermore, the DNA skeleton is made of the 5'-3' phosphodiester bond. In other words, the 5-phosphat of a nucleotide will bond the 3' OH of the Deoxyribose (see image).

Therefore, if you add a molecule which lacks the 3' OH, such as acyclovir, and has a similar chemical structure to a regular nucleotide, the DNA polimerase will be able to add acyclovir to the main backbone of the viral genome. All in all, you'd be ''cheating'' the DNA pol.

Hence, wherever acyclovir was integrated, there won't be any chance to form a 5'-3' phosphodiester bond. The protomolecule will not be stable and will soon be degradated.