Question
Choose the incorrect statement about restriction enzymes.a. They are used to create recombinant plasmids.b. They are necessary for translation.c. They are used to produce DNA fingerprints.d. They cut DNA at specific sequences.
Step 1
Restriction enzymes are proteins that recognize specific short nucleotide sequences in DNA and cut the DNA at those sequences. Show more…
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Which of the following statements concerning restriction enzymes is FALSE? They cut DNA molecules at specific sequences. They are found in all cells. There are two basic types of restriction enzymes. They are an important tool in recombinant DNA technology.
Select the incorrect statement. (a) More than 900 restriction enzymes have been isolated from over 230 strains of bacteria. (b) In the year 1963 , the two enzymes responsible for restricting the growth of bacteriophage in Escherichia coli were isolated. (c) Some key tools for recombinant DNA technology are restriction enzyme, polymerase enzyme, ligase, vectors and host root organisms. (d) EcoRI cut the DNA between bases $\mathrm{A}$ and $\mathrm{T}$ only when the sequence GAATTC is present in the DNA.
All of the following statements related to gel electrophoresis are correct EXCEPT: (A) restriction enzymes cut DNA at particular recognition sequences (B) restriction enzymes are extracted from bacteria (C) the farther a piece of DNA runs, the larger it is (D) EcoRI is an example of a restriction enzyme (E) restriction enzymes are necessary in order to insert a gene into a plasmid
SAMPLE TEST
Biology E/M Sample Test 1
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