Text Ba 12. During DNA replication there are two daughter strands being synthesi

Question

Text Ba 12. During DNA replication there are two daughter strands being synthesized, one of which is called the Moving in the direction of the replication fork, while the other is th..... .tsrand moving in the opposite direction. A. Alding, Needing B. Fast, Slow Leading, Lagging D. Heading, Following 13. A protein which usually has its promoter blocked by a repressor needs to be transcribed, what is the best situation for the transcription of this protein? A. A repressor in the absence of sugar B. A repressor in the presence sugar C. An activator in the absence of sugar D. An activator in the presence of sugar 14. Which of the following statements is true? A. A repressor can be found in a positive regulation model B. An inducer can be found in a positive regulation model An activator will NOT be prese nt in a negative regulation model D. Both and activator and repressor can be found in a negative regulation model under the right circumstances SecPages:3 of 3 Words: 0of 649 ut View

Explanation / Answer

12. The correct option is C. Two strands are synthesized simultaneously during DNA replication. One which is synthesized continuosly is known as leading strand whereas one which is synthesized discontinuosly is known as lagging strand.

13. The correct option is B. In case of lac operon, if the lactose sugar is present, repressor molecule will not bind the promoter site and transcription can occur.

14. The correct option is C.

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