Which molecule directs the synthesis of a polypeptide at a ribosome? Which of the following identifies the process shown at point Z?
Understand the Problem
The question is asking which molecule is responsible for directing the synthesis of a polypeptide (protein) at a ribosome, as well as identifying a specific cellular process depicted in a diagram involving DNA and RNA. It seeks to understand concepts related to protein synthesis, including transcription and translation.
Answer
RNA; Translation
The molecule that directs the synthesis of a polypeptide at a ribosome is RNA, specifically mRNA. The process shown at point Z is translation.
Answer for screen readers
The molecule that directs the synthesis of a polypeptide at a ribosome is RNA, specifically mRNA. The process shown at point Z is translation.
More Information
RNA, particularly mRNA, carries the genetic information for protein synthesis. During translation at the ribosome, the sequence on mRNA is decoded to build polypeptides.
Tips
A common mistake is confusing transcription and translation. Transcription occurs in the nucleus when DNA is converted to mRNA, while translation occurs at the ribosome, using mRNA for protein synthesis.
Sources
- RNA - en.wikipedia.org
- Science / SC.912.L.16.3 DNA Replication - escambiaschools.org
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