36. Why do the fragments of DNA in gel
the
electrophoresis travel
negative electrode?
A. DNA is negatively charged so attracted to
the positive end of the unit
B. DNA is positively charged so attracted to
the negative end of the unit.
C. The agarose gel is negatively charged
D. The agarose gel is negatively charged
37. Which is the primary purpose of using
restriction enzymes in gel electrophoresis?
A. It allows the strands of DNA to be cut into
various lengths for testing.
B. It restricts the number of base pairs that
can be tested in a sample.
C. It makes the testing simpler by moving
the strands into the gel faster,
D. It charges the DNA strands.
38. The manipulation of DNA is called
A. Gel electrophoresis
B. Karyotype
C. Plasmid
D. Genetic Engineering
39. How do scientists cut the DNA into smaller
strands?
A restriction enzymes
C. ligase
B. scissors
D. agarose
40. How can DNA fragments be separated and
analyzed?
A. Plasmids
B. Recombinant DNA
C. Gel electrophoresis
D. Restriction Enzyme​