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Anna11 [10]
2 years ago
7

a cell contains a 4% concentration of salt. the cells enviornment is isotonic. which is a possible salt concentration outside th

e cell?
Biology
1 answer:
pishuonlain [190]2 years ago
4 0

Answer: 4%

If it was another then it would not make any sense.

Explanation:

Hope this helps you!!!!!!! :D

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Alexander Litvinenko was poisoned with 10 micrograms of the radioactive substance Polonium-210. Since radioactive decay follows
irina [24]

Answer:

Left amount of Polonium-210 after 115 days will be 4.5927 microgram

Explanation:

We have given initial mass of Polonium-210 N_0=10microgram

Decay rate x= 0.502% = 0.00502

Time t = 115 days

We have to find the left amount of Polonium -210 after 115 days

We know that left amount is given by

N=N_0e^{-xt}=10e^{-0.00502\times 115}=4.5927microgram

So left amount of Polonium-210 after 115 days will be 4.5927 microgram

7 0
3 years ago
What are the three things that can come out of a volcano during a volcanic eruption?​
vredina [299]

Answer:

It will produce 3 types of material

Gas, lava, teprah

Explanation:

Another 3 is

Hot rock, lava and ash

4 0
3 years ago
You first use PCR to amplify the fragment so that there is sufficient DNA for sequencing. You carry out dideoxy sequencing and t
dsp73

Answer:

The first attached figure below shows the design of an agarose gel with four sequencing reactions. The second figure presents a photo of an agarose gel, so that you can better understand how the bands are represented in this gel.

Explanation:

To view the bands of four sequencing reactions on an agarose gel, you will need to use a melted agarose gel, plastic combs suitable for that reaction and a container suitable for that type of gel. You will place the plastic combs in the container and pour all the gel into the vat and wait for the melted gel to solidify. The plastic combs will form holes in the hardened gel where the DNA samples will be placed.

Once the gel is hardened, you will remove the plastic combs and begin to apply the sequenced DNA.

The sequenced DNA samples will be mixed with a dye, usually bromophenol blue, which will allow you to visualize the bands formed on the gel. You will also apply the dye to a sample without DNA containing only the dye, which serves as a comparison for the size of the bands.

Each sample of DNA will be plated in the column of holes formed by the plastic combs. Then, this container, with the gel, will be placed in a larger container that contains a loading buffer. The larger container will be closed and an electric field will be applied that will force the DNA samples to be moved from one pole to another inside the container, in this case, the samples leave the negative pole for the positive pole.

After a few minutes, it is possible to visualize the DNA displacement and at the end of the procedure it will be possible to visualize the formation of bands as shown in the drawing and in the figure below. The size of these bands can be compared and analyzed.

3 0
2 years ago
How is gerrymandering used to help a political party
Arturiano [62]
Hello my friend, you is my friend, and we are friends.
7 0
3 years ago
Hemoglobin is produced by
Sliva [168]

Answer: Hemoglobin is produced in bone marrow by erythrocytes and is circulated with them until their destruction. It is then broken down in the spleen, and some of its components, such as iron, are recycled to the bone marrow.

hope it help you if not sorry

6 0
3 years ago
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