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Salsk061 [2.6K]
3 years ago
13

Joy has a DNA sample from each of five unknown animals. She wants to find the molecular mass of each sample to determine which s

ample belongs to which animal. Which method should she use?
a. gel electrophoresis of the DNA samples
b. transformatiion of different E. coli strains using the DNA samples
c. paper chromatography of the DNA samples
Biology
1 answer:
murzikaleks [220]3 years ago
3 0
Answer is B since it uses strains and differential transformation to see
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I think that the fossil is a carbon fossil

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expeople1 [14]

Transport of blood under high pressure is done through the concerted efforts of the heart and arteries.

<h2>The circulatory system is the network of the heart, arteries, veins, and capillaries responsible for the movement of blood around the body.</h2>

Transporting blood under high pressure can be explained in the following steps:

  1. Contraction of the heart ventricles creates blood under high pressure
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As a result of the above, the high pressure of blood is maintained and transported to the extremities of the body.

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SPJ12

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How many protons and neutrons does an oxygen atom have
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Anton [14]

Answer:

The correct option is C. Building a well between the two wells that goes deeper into the earth would not stop the water from being polluted .

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Even if a well was constructed between the wells B and C, it wouldn't have stopped the contamination of the water. As the oil would still be leaking and it would contaminate the wells.

All of the other options can be used to stop the contamination.

Option A suggests building an impermeable membrane that would stop the oil flow. Hence, the water in the wells will not be contaminated.

Option B suggests not using the water from the wells and using an alternate water supply. The alternate water supply wouldn't be contaminated with oil.

Option D suggests chemically purifying the contaminated water. This can be an effective technique to clean the contaminated water.  

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