IB Biotech Electrophoresis

Based on these results whose blood was found in the blood stain at the crime scene?

• Bob

• Sue

• John

• Lisa

Which two bear species are most closely related?

• Bear 1 and Bear 2

• Bear 1 and Bear 3

• Bear 2 and Bear 3

• There’s no way to tell

Tags

NGSS.MS-LS4-2

Which suspect is most likely to be guilty?

• Suspect #1

• Suspect #2

• Suspect #3

• None of the suspects

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

DNA is recovered from a dead soldier who was so badly injured she could not be formally identified. Which parents have lost their child?

• Parents C and D

• Parents E and F

• Parents A and B

• Parents G and H

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

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

• DNA is negatively charged so attracted to the positive end of the unit

• DNA is positively charged so is attracted to the negative end of the unit

• the agarose gel is 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

Restriction Enzymes are . . .

• proteins

• DNA

• fats

• carbohydrates

Tags

NGSS.HS-LS1-1

Restriction Enzymes . . .

• cut DNA at precise locations

• help bacteria to pick up DNA

• move DNA through a gel

• copy DNA

Restriction Enzymes come from . . .

• viruses

• bacteria

• fungi

• all of these answers

Why do bacteria have restriction enzymes?

• To prevent them from being infected by viruses

• To help them get DNA into their cell

• Restriction enzymes are an essential enzyme needed during replication

• To cut their DNA into more manageable fragments