Multiple Choice
What is the primary function of single-strand binding proteins during DNA replication?
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14. DNA Synthesis
Introduction to DNA Replication
Multiple Choice
In which direction do DNA helicase enzymes move along the DNA during DNA replication?
A
Randomly
B
3' to 5'
C
Both directions simultaneously
D
5' to 3'
Verified step by step guidance1
Understand the role of DNA helicase: DNA helicase is an enzyme that unwinds the DNA double helix during replication, allowing the two strands to be copied.
Recognize the directionality of DNA strands: DNA strands have directionality, characterized by the 5' (five prime) and 3' (three prime) ends. This is based on the orientation of the sugar-phosphate backbone.
Identify the movement of DNA helicase: DNA helicase moves along the DNA strand in a specific direction, which is crucial for the replication process.
Recall the correct direction: DNA helicase moves from the 5' end towards the 3' end of the DNA strand. This directionality is essential for the synthesis of new DNA strands.
Consider the implications: The movement of DNA helicase in the 5' to 3' direction ensures that the replication machinery can synthesize new DNA strands efficiently, following the template provided by the unwound DNA.
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