1: Analysis of DNA fragments in gel electrophoresis involves A: DNA moving to th

Question

1: Analysis of DNA fragments in gel electrophoresis involves

A: DNA moving to the positive pole

B: Staining DNA fragments to visualize them

C: An electric current causes DNA fragments to migrate

D: all of the above

2: Which of the following techniques involve the purposeful removal of genetic material from one organism and combining it with the genetic material of another organism?

A: Gel electrophoresis

B: Biotechnology

C: Recombinant DNA

D: Genetic engineering

3: Adult stem cells are

A: totipotent

B: pluripotent

C: found only in those over the age of 18

D: not found in children

4: What is the purpose of the salt in the DNA extraction solution?

A: aids in breaking down the cell membranes

B: helps the DNA molecules stick together

C: forces the DNA to precipitate out of solution

D: stabilize the pH of the solution

Explanation / Answer

1.Correct answer is:D.all of the above

Reason: All the options are the features of gel electrophoresis involving DNA.

2.Correct answer is:C.Recombinant DNA

Reason:Recombinant DNA technology best defines the above process.

3.Correct answer is:B.Pluripotent

Reason:Stem cells are pluripotent means that they are capable of dividing infinitely and differentiation as well.

4.Correct answer is:B.helps the DNA molecule stick together.

Reason:Salt helps the DNA molecules to bind to each other.

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