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Advocard [28]
3 years ago
12

Why is the fact that DNA has a negative charge so important in the gel. electrophoresis process?

Biology
1 answer:
Mamont248 [21]3 years ago
6 0

<span>An electric current is running through the gel in the electrophoresis with positive pole on the bottom. So, only negatively charged particles can migrate through the gel in the electrophoresis. </span>Since DNA is negatively charged, it migrates toward the positive pole of the gel. This characteristic enables DNA to move through the gel.

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A pond is located beside an open mine. Mercury from the mine contaminates the river water. This is an example of
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Answer:

The correct answer is C. Point source pollution

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Explanation:

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How did the Tang and Song dynasties differ from the later Ming dynasty?
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Explanation:

7 0
2 years ago
how do i describe the second part of anaphase one the cell cycle? as in after the division of chromosomes.
loris [4]

Answer:

<h2><u><em>I think this will help u with the answer that ur looking for. I hope so</em></u></h2>

Explanation:

<h3><u><em>Anaphase is the fourth phase of mitosis, the process that separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells. Before anaphase begins, the replicated chromosomes, called sister chromatids, are aligned at along the equator of the cell on the equatorial plane. The sister chromatids are pairs of identical copies of DNA joined at a point called the centromere. </em></u></h3><h3><u><em> </em></u></h3><h3><u><em>During anaphase, each pair of chromosomes is separated into two identical, independent chromosomes. The chromosomes are separated by a structure called the mitotic spindle. The mitotic spindle is made of many long proteins called microtubules, which are attached to a chromosome at one end and to the pole of a cell at the other end. The sister chromatids are separated simultaneously at their centromeres. The separated chromosomes are then pulled by the spindle to opposite poles of the cell. </em></u></h3><h3><u><em> </em></u></h3><h3><u><em>Anaphase ensures that each daughter cell receives an identical set of chromosomes, and it is followed by the fifth and final phase of mitosis, known as telophase. </em></u></h3><h3><u><em> </em></u></h3>

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3 0
3 years ago
Name the 2 different types of endoplasmic reticulum and explain the function of each type endoplasmic reticulum to the cell . (i
valentinak56 [21]

Answer:

The surface of the rough endoplasmic reticulum (ER) is covered in ribosomes, while the smooth endoplasmic reticulum is not covered in ribosomes.

Explanation:

Hence their terms, rough and smooth endoplasmic reticulum, the smooth is like a fine tube whereas the rough consists of ribosomes on its surface. Both the smooth and rough endoplasmic reticulum work together, delegate tasks and are the site for production and storage of proteins.

Smooth ER is responsible for storage and lipids production, while the rough ER is responsible for production of proteins and some hormones.

have a darling weekend ^w^

5 0
3 years ago
You notice a species of bird in which females prefer long ornamented feathers on the crest of males. You demonstrate this throug
Georgia [21]

Answer:

The correct answer is "Runaway sexual selection".

Explanation:

Runaway sexual selection, also known as Fisherian runaway in honor to Ronald Fisher the scientist that proposed it, is a type of sexual selection on birds, at which exaggerated male ornamentation are developed since females prefer males with these characteristics. Runaway sexual selection is a  biological paradox, since male with exaggerated ornamentation are selected by the females but also are more easily caught by predators. Runaway sexual selection fits the description of the species of bird herein described.

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3 years ago
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