3 years ago

In gel electrophoresis, DNA fragments move across a gel. What causes them to move?

1 answer:

4 0

When placed in an electrical field, the negative charge found in the sugar-phosphate backbone of DNA polymers cause them to migrate towards the positive electrode.

In gel electrophoresis, electricity is used to separate fragments of DNA based on its length. DNA is place in a porous gel. The pores of the gel restricts the movement of the DNA. It then creates fragments on the DNA because its movement varies on its lengths.

You might be interested in

Which type of wave has the lowest energy of the following:

Tcecarenko [31]

Answer:

use this to help u it starts from left to right

Please mark as brainliest if answer is right

Have a great day, be safe and healthy

Thank u

3 0

3 years ago

A reaction that breaks large molecules into smaller ones by the addition of water is called a(n):

Luda [366]

Answer: "condensation reaction" .
__________________________________________________

5 0

3 years ago

Abigail obtained 36.6 grams of calcium carbonate after performing a reaction. From her calculations, she knew she should have ob

Zielflug [23.3K]

Answer:

it would be 1

Explanation:

3 0

3 years ago

In a constant‑pressure calorimeter, 60.0 mL of 0.300 M Ba(OH)2 was added to 60.0 mL of 0.600 M HCl. The reaction caused the temp

Zepler [3.9K]

Answer:

ΔH = 57.04 Kj/mole H₂O

Explanation:

60ml(0.300M Ba(OH)₂(aq) + 60ml(0.600M HCl(aq)

=> 0.06(0.3)mole Ba(OH)₂(aq) + 0.60(0.6)mole HCl(aq)

=> 0.018mole Ba(OH)₂(aq) + 0.036mole HCl(aq)

=> 100% conversion of reactants => 0.018mole BaCl₂(aq) + 0.036mole H₂O(l) + Heat

ΔH = mcΔT/moles H₂O <==> Heat Transfer / mole H₂O

=(120g)(4.0184j/g°C)(27.74°C - 23.65°C)/(0.036mole H₂O)

ΔH = 57,042 j/mole H₂O = 57.04 Kj/mole H₂O

3 0

3 years ago

Can you help me understand this question

snow_tiger [21]

You should talk about how it evaporates then it turn into a gas then back in to a liquid

6 0

3 years ago