Restriction enzymes are called 'molecular scissors' because they:
AJoin two DNA fragments together with covalent bonds
BCut DNA at specific palindromic sequences to create fragments
CAmplify DNA millions of times through thermal cycling
DCarry foreign genes into host cells
Question 2
In recombinant DNA technology, plasmids are used as:
AEnzymes to cut DNA at specific sites
BVectors to carry foreign DNA into host cells
CTools to separate DNA fragments by size
DPrimers to start DNA replication
Question 3
Humulin (recombinant human insulin) was the first recombinant drug, approved by the FDA in:
A1953
B1972
C1982
D1996
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