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3 years ago

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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Choose all the answers that apply.

Ksju [112]

Answer:

stores extra food

is responsible for photosynthesis

supports the plant

makes up the majority of a plant

Explanation:

Ground tissues are one of the three types of plant tissues (others being dermal and vascular). They are composed of cells as follows: parenchyma, collenchyma, and sclerenchyma. These three cells that make up the ground tissues perform different functions in the plant cell.

- Parenchyma functions in photosynthesis and storage of extra food (carbohydrates) in the cell.

- Collenchyma functions in the support of young regions of the plant

- Sclerenchyma, which has the thickest cell wall, functions mainly in the strengthening/support of the plant cell.

Also, among the three tissue types in a plant, ground tissues make up majority of the plant cell.

4 0

2 years ago

What is the most likely reason why Tuj1 was used to assess the phenotype of cells that have incorporated the five candidate gene

Serhud [2]

Answer:

Tuj1 induces expression of the TauEGFP protein. Tuj1 is expressed in fibroblasts and neurons. Tuj1 is an early marker of neural differentiation.

6 0

3 years ago

How many possible open reading frames (frames without stop codons) are there that extend through the following sequence? 5'... C

fenix001 [56]

Answer:

There are 4 reading frames without stop codons.

Explanation:

1) To find the possible reading frames you need to separate your sequence in codons (trios) for the 5'-> 3' sense, first, excluding the first nucleotide, then excluding 2 nucleotides and then not excluding nucleotides.

5'... C TTA CAG TTT ATT GAT ACG GAG AAG G... 3' NO STOP CODON

5'... CT TAC AGT TTA TTG ATA CGG AGA AGG... 3' NO STOP CODON

5'... CTT ACA GTT TAT TGA TAC GGA GAA GG... 3'

2)Then you find the complementary sequence (which you already have)

3'... GAA TGT CAA ATA ACT ATG CCT CTT CC... 5'

3'... GA ATG TCA AAT AAC TAT GCC TCT TCC... 5'

3'... G AAT GTC AAA TAA CTA TGC CTC TTC C... 5'

3) Next, you have to obtain the reverse complementary

CCT TCT CCG TAT CAA TAA ACT GTA AG NO STOP CODON

CC TTC TCC GTA TCA ATA AAC TGT AAG NO STOP CODON

C CTT CTC CGT ATC AAT AAA CTG TAA G

4)Now you need to find start (AGT in terms of DNA) and stop codons(TAA, TAG, TGA, also in terms of DNA), in 5->3 and de reverse complementary.

As you can see, you have for open reading frames that lack of stop codon, unfortunately, they also lack of AGT, the start codon.

I added a table where you can find thestart and stop codons as well as the proteins that they translate to in terms of RNA.

I hope you find this information interesting and useful, good luck!

8 0

3 years ago

The run off of which of these can result in cultural eutrophication

Lilit [14]

sulfur and dihydrogen monoxide

3 0

3 years ago

Which states of matter is water in during the water cycle?

Andre45 [30]

Answer:

Explanation:

The water cycle is the path that all water follows as it moves around our planet.

3 0

3 years ago