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Chapter 12: Problem 14

Describe what happens to the chemical bonding interactions when transcriptional termination occurs. Be specific about the type of chemical bonding.

Short Answer

Expert verified
In transcriptional termination, hydrogen bonds, which hold the RNA strand to the DNA, are broken. This allows the RNA polymerase and the newly formed RNA strand to disconnect from the DNA strand, marking the end of the transcription process.

Step by step solution

01

Understanding Transcriptional Termination

Transcriptional termination occurs when the RNA polymerase gets to the termination sequence of the DNA being read. At this point, it detaches from the DNA, signifying an end to the transcription process.
02

Chemical Bonding Involved

The chemical bonds involved in this process are primarily hydrogen bonds. Hydrogen bonds occur between the bases of the DNA strand and the newly synthesized RNA strand. These bonds are what essentially hold the RNA strand to the DNA.
03

Bonding Interactions upon Transcriptional Termination

During transcriptional termination, these hydrogen bonds are broken. This allows for the RNA polymerase, as well as the newly formed RNA strand, to disconnect from the DNA strand. The RNA strand, which is a transcript of a part of the DNA strand, is then free to undergo further processes such as translation to cause protein synthesis.

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