객관식
What structural component does have that does not?
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34. Nucleic Acids
Intro to Nucleic Acids
객관식
Why does move from the negative end of the gel to the positive end during gel electrophoresis?
A
Because is hydrophobic and moves towards the water in the gel.
B
Because is negatively charged and is attracted to the positive end.
C
Because is positively charged and is attracted to the negative end.
D
Because is neutral and moves randomly in the gel.
검증된 단계별 안내1
Understand the structure of DNA: DNA molecules have a backbone made of sugar and phosphate groups. The phosphate groups are negatively charged due to the presence of phosphate ions.
Recognize the principle of gel electrophoresis: This technique separates molecules based on size and charge by applying an electric field across a gel matrix.
Identify the charge of DNA: Since DNA has negatively charged phosphate groups, it will be attracted to the positive electrode (anode) in an electric field.
Consider the movement of DNA in the gel: When an electric field is applied, DNA will migrate from the negative electrode (cathode) towards the positive electrode (anode) due to its negative charge.
Conclude why DNA moves in this direction: The movement of DNA from the negative to the positive end during gel electrophoresis is due to its inherent negative charge, which is attracted to the positive end of the gel.
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