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BIO NMDCAT Structure of DNA
nmdcat.online July 3, 2026

37. The standard orientation for reading and writing a gene’s coding sequence to match the resulting protein’s N-terminal to C-terminal direction is

A. 3' to 5'
B. 5' to 3'
✓
C. From the middle outward
D. Randomly determined

📝 Explanation

By convention, the coding strand is written 5' to 3' because the ribosome reads mRNA 5' to 3' to build a protein from its N- to C-terminus.

📖 Additional Information

  • 3' to 5'
  • 5' to 3'
  • From the middle outward
  • Randomly determined

By convention, the coding strand is written 5' to 3' because the ribosome reads mRNA 5' to 3' to build a protein from its N- to C-terminus.

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