1. What are the components of an atom?

Biology

1 answer:

Akimi4 [234]2 years ago

3 0

Answer:

Proton, neutron, and electron

Explanation:

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How do sediment properties (porosity & permeability) affect how groundwater movement occurs?

padilas [110]

Answer:

Grain size, sorting and shape of particles in sediment or rock can influence how much empty space is available to store water (porosity) and the ability of groundwater to move through the material (permeability). Aquifers are water-bearing formations with good porosity and permeability and are important groundwater resources.

Explanation:

7 0

6 months ago

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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.