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

1 answer:

6 0

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. 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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These muscle cell could be best called

Rama09 [41]

Answer:Tissue

Explanation:Heart muscle cells beat in unison to push blood in timing with the rhythm of the heart, at the direction of nearby nerve cells. These muscle cells could best be called. Tissue. As cell division proceeds, the cells increase in number, but also become specialized in structure and function.

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2 years ago

What two body systems use the heart as an organ?

Troyanec [42]

Answer:

cardiovascular and blood vessals

Explanation:

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Select one organism that lives in the Ecosystem and describe three adaptations the organism possesses. Explain why the adaptatio

lesya [120]

Explanation:

Hey, there!

The eco-system consists of various type of organisms in tge ecosystem. The all type of organism as producer, decomposer, consumers live in ecosystem.

Three adaptations of organism are:

By losing and gaining of organs: Some of the animals lose their organs to survive in some places like yak have more hair to survive in cold places.
By changing the colour of body: Some animals such as grasshopper changes their colour to survive in places.
By modification of organs: some animals modify their organs to survive such as legs and beak of ducks are modified to survive in swim and search foods.

The importance of adaptation are:

It helps organism to live a longer life.
The adaptation helps to make an organism fittest to any environment.
The adaptation helps an organism to search foods and live their life.

Hope it helps...

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2 years ago

Choose the structures that most directly provide nutrients and remove wastes from osteocytes in compact bone.

Ber [7]

I had to look for the missing options of this question and here is my answer:

Osteocyte is the term that describes the cells of the bone. These cells are formed in the mesenchyme. Once the bone matures, the processes then take place inside the Lacunae and the Canaliculi, respectively. Therefore, we can say that the structure that allows the provision of nutrients and removal of wastes from osteocytes would be the canaliculi.

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2 years ago

RSS What happens in meiosis during telophase 2?

ololo11 [35]

Telophase 2 is the final step of meiosis 2 in which homologous chromosomes reach the opposite poles and four haploid cells are formed.

Explanation:

The telophase 2 ends up in four haploid (n=2) cells. It is in this phase the genetic material of the parent cell is divided into 2 daughter cells. The events taking place are nuclear membrane reappears (karyokinesis has taken place by now), spindle fibres and astral rays disappear, chromosomes decondensed to become chromatids (thin fibres), constriction on equatorial plate consequently four daughter cells formed.

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2 years ago