PLTW Biomedical Science

This laboratory procedure is known as

• CLONING

• gel electrophoresis

• chromatography

• use of a dichotomous key

In preparation for an electrophoresis procedure, enzymes are added to DNA in order to

• convert the DNA into gel

• cut the DNA into fragments

• change the color of the DNA

• produce longer sections of DNA

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

• Bob
• Sue
• John
• Lisa

Which suspect is likely guilty?

• Suspect #1
• Suspect #2
• Suspect #3

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

Once DNA has been extracted from the nucleus of a cell, it is exposed to ______ ______ that act like biochemical scissors to cut the DNA.

• restriction enzymes

• gel agarose

• clotting factors

• electric shock

Gel electrophoresis separates fragments of DNA by:

• Size/weight

• Genes

• Base pairs

• Electromagnetic charge

In a DNA fingerprint, lighter-weight fragments can be found at the:

• Top

• Bottom

• Middle

• Front

What are the proper complementary base-pairs?

• A--T and G--C

• A--G and C--T

• G--T and A--C

• A--C and T--G

If a strand of DNA has 39% Cytosine, it has...

• 39% Adenine

• 39% Guanine

• 39% Thymine

• 39% combined Cytosine and Guanine