Question

a technique used to amplify a single copy or a few copies of a piece of dna is known as
polymerase chain reaction
molecular cloning
gel electrophoresis
blotting
question 10
1 pts
which of the following is not a component that makes up dna?
ribose sugar
nucleic acids
phosphate groups
deoxyribose sugar

Explanation:

• For the first question:
• Polymerase Chain Reaction (PCR) is specifically designed to amplify DNA. Molecular cloning is about inserting DNA into vectors. Gel electrophoresis separates DNA fragments by size. Blotting is for transferring DNA.
• For the second question:
• DNA is made of nucleic acids (nucleotides), phosphate groups, and deoxyribose sugar. Ribose sugar is part of RNA.

Answer:

• First question: Polymerase Chain reaction
• Second question: Ribose sugar