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16. Which will require a higher temperature to denature?

A. DNA with a high G-C content
B. DNA with a high A-T content
C. RNA with a high G-C content
D. RNA with a high A-T content

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17. In an agarose gel, DNA is moving from

A. cathode to anode
B. left to right
C. anode to cathode
D. A to B

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18. T_M refers to the temperature at which

A. membranes are 50% fluid
B. 50% of a DNA molecule is denatured
C. 50% of a protein molecules are denatured
D. all of the above

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19. DNA segments capable of moving from one place in the genome to another is known as

A. transposons
B. retrovirus
C. introns
D. moving elements

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20. What does ligase do during replication of DNA?

A. Synthesizes the lagging strand
B. Makes copies of mRNA from DNA
C. Joins nicks in DNA strands
D. Digests mRNA when it is no longer needed

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