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Vikentia [17]
1 year ago
7

Before the development of electrophoresis to separate macromolecules, ____________ was used.

Chemistry
1 answer:
max2010maxim [7]1 year ago
4 0

Before the development of electrophoresis to separate macromolecules, high-speed centrifugation was used to isolate DNA.

A laboratory procedure called electrophoresis is used to divide DNA, RNA, or protein molecules according to their size and electrical charge. The molecules are moved by an electric current through a gel or other matrix. The technology of electrophoresis is crucial for the separation and examination of nucleic acids. At the lab bench, cloned DNA fragments are frequently isolated and worked with using nucleic acid electrophoresis.

High-speed centrifugation employs centrifugal force to separate particles with various densities or masses suspended in a liquid. High-speed rotation of the solution inside the tube causes each particle's angular momentum to experience centrifugal forces inversely proportionate to its mass.

To know more about electrophoresis refer to: brainly.com/question/28709201

#SPJ4

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What is the mass of a solution that has a density of 0.775 g/ml and a volume of 50.0ml?
Margarita [4]
Hey there!

D = m / V

0.775 = m / 50.0

m = 0.775 * 50.0

m = 38.75 g
6 0
2 years ago
Examples for non metals​
nadezda [96]

Answer:

you can write plastic , paper , stone e.t.c

Explanation:

non metals means who are not being attracted by magnets

                                        or

which does not have good conductor of heat and electricity

          some others examples can be sulpher

4 0
2 years ago
Write the isotope notation for an element with 53 protons and 20 neutron?
iris [78.8K]

The isotope notation : ⁷³₅₃X

<h3>Further explanation</h3>

Given

53 protons and 20 neutron

Required

The isotope notation

Solution

Isotopes are elements that have the same atomic number with a different mass number

The following element notation,

\large {{{A} \atop {Z}} \right X}

X = symbol of element

A = mass number

   = number of protons + number of neutrons

Z = atomic number

   = number of protons = number of electrons, on neutral elements

So the mass number of element = 53 + 20 = 73

Atomic number = 53

The symbol :

\large {{{73} \atop {53}} \right X}

5 0
2 years ago
Look at this graph:
ankoles [38]

\frac{3}{2}

3 0
2 years ago
Which of the following represent a chemical compound? a. Cr b. CO c. Au d. Mg
Stolb23 [73]
B, because all the other are elements. You can tell because Carbon and Oxygen in CO are both capitals while something like Au is gold.
5 0
3 years ago
Read 2 more answers
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