Why do longer DNA molecules move more slowlythan shorter ones during electrophoresis?

Gel electrophoresis drives DNA along an electrical current from a negative electrode to a positive electrode. This is because DNA is a negatively charged molecule. Do you think that gel electrophoresis would function differently if DNA was positively charged? How so? Why?

When gel electrophoresis is done correctly, which of these DNA molecules would move the least through the gel? Group of answer choices:   1000 bp molecules 6 Kbp molecules 3 Kbp molecules 2000 bp molecules

Which protein is needed to lay down a segment of RNA complementary to the DNA before replication can begin? O RNA pelymerase NI O primase O helicase O DNA polymerase lII O topoisomerase

Which one of the following statements is true about gel electrophoresis of DNA? Select the correct answer Current is conducted thru the gel by electrons which move away from the negative electrode and towards the positive electrode O if the power supply voltage is fixed increasing the resistance of the gel increases the current that flows through it O Decreasing the power supply voltage increases the resistance of the gel O Choose this answer if none of the statements is true O If the power supply voltage is fixed Increasing the length of the gel will decrease the current flowing through it

How are Chromosomes different from DNA? Who captured the photo of DNA?

Why is it easier to separate the strands of a DNA molecule at pH > 11?

What are the differences between In vitro and In vivo DNA replication?  Please answer at your own words.

How many times wider is a 30 nm fiber than a DNA double helix? Show your work.

Does DNA replication follow the conservative,semiconservative, or dispersive model?