DNA polymerase synthesis is in ----- direction only A. 3' to 5' B. 5' to 3' C. C to N D. N to C
Question
DNA polymerase synthesis is in ----- direction only
A. 3' to 5'
B. 5' to 3'
C. C to N
D. N to C
Solution
1. Break Down the Problem
The question asks about the direction in which DNA polymerase synthesizes new DNA strands. The choices provided represent four different directions.
2. Relevant Concepts
In molecular biology, understanding the direction of synthesis is crucial. DNA polymerase can only add nucleotides to the growing strand in a specific orientation. This is based on the structure of DNA nucleotides and their phosphate groups.
3. Analysis and Detail
- DNA strands have two ends: the 5' end (with a phosphate group) and the 3' end (with a hydroxyl group).
- During DNA replication, DNA polymerase adds new nucleotides to the 3' end of the growing strand, facilitating the synthesis from the 5' to 3' direction.
4. Verify and Summarize
After reviewing the information about DNA synthesis, it is confirmed that DNA polymerase synthesizes DNA strands in the 5' to 3' direction.
Final Answer
B. 5' to 3'
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