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anastassius [24]
3 years ago
12

Please please help hdjdjd question 9

Biology
1 answer:
Alex787 [66]3 years ago
5 0
Spspspsppssspspps its c
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"A technologist in a tissue bank who performed HLA typing by DNA analysis was asked to bank all DNA extracted from specimens rec
professor190 [17]

Explanation:

The DNA could be dried -through the process of lyophilization- or stored, as a precipitate of ethanol, in liquid nitrogen (temperatures below -80 degrees Celsius). The aim is to reduce water in the stored samples as much as possible because the water can be involved in natural hydrolytic reactions (depurination, depyrimidination, deamination, and hydrolytic cleavage) that could degrade the nucleic acids of the DNA.

If the DNA is stored while being used regularly it is not advisable to store it as a precipitate of ethanol. It should be stored in aqueous form but in a slightly alkaline pH of about 8.5 to prevent acid-catalysed degradation processes.

Learn More:

For more on DNA storage check out;

brainly.com/question/8841070

brainly.com/question/13435389

#LearnWithBrainly

4 0
3 years ago
What can be done for repair if a gauge line leaks at the fitting?
kobusy [5.1K]
If it leaks at the fitting, either try to tighten the fitting, or cut it off and put on a new one.

hope this helps (:
5 0
3 years ago
A scientist who studies living things in the environment 1 point
gregori [183]
It's a biologist (a person that studies living organisms and systems)
5 0
3 years ago
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Which best describes how mRNA is produced in a cell
Alex787 [66]
A. mRNA is made by RNA polymerase, using DNA as a template.
6 0
3 years ago
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Identify the labeled structures. A B C D E
DerKrebs [107]

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A is cell wall

B is valcuole

C is mitochondria

A is ribosome

D is nucleus

3 0
3 years ago
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