PBS

A student performed a gel electrophoresis experiment. The results are represented in the diagram

below. Compared to the fragments at the top of the gel, the fragments at the lower end are

• larger, and move slower

• larger, and move faster

• smaller, and move faster

• smaller, and move slower

Why do the fragments of DNA in gel electrophoresis travel away from the negative electrode?

• DNA is negatively charged

• DNA is positively charged

• the agarose gel in negatively charged

• the agarose gel is positively charged

In gel electrophoresis, the largest DNA fragment will appear

• closest to the starting wells

• farthest from the starting wells

• three quarters away from the starting wells

• it depends on how many fragments there are

Tags

NGSS.HS-PS1-3

How many fragments resulted from the cut above?

• 1

• 2

• 3

• 4

Which letter represents amplitude? (a)  

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS4-1

How many restriction sites appear in the picture?

• 1

• 2

• 3

• 4

Which restriction enzyme listed below was isolated from E.coli bacteria?

• AluI

• HindIII

• HaeII

• EcoRI

This process produces millions of copies of a DNA sequence from a small amount of DNA.

• Amplification

• PCR (Polymerase Chain Reaction)

• DNA Digestion

• Transcription

The location where restriction enzymes cut DNA is called a..

• nucleotide

• recognition site

• phosphate

• molecular clevage site

Check all the places from where you can collect DNA.

• Red Blood Cells

• Clothing

• Bone

• Hair with a follicle

• Body Fluids