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During RNA processing, a(n) _____ is added to the 5' end of the RNA.
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15. Gene Expression
Eukaryotic RNA Processing and Splicing
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The regions in DNA & RNA that encode actual gene products are known as:
A
Terminators.
B
mRNA.
C
Exons.
D
tRNA.
E
Promoters.
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Understand the structure of genes: Genes are composed of regions called exons and introns. Exons are the sequences that code for proteins, while introns are non-coding sequences that are removed during RNA processing.
Differentiate between the options: Terminators are sequences that signal the end of transcription, mRNA is the messenger RNA that carries the genetic information from DNA to the ribosome, tRNA is transfer RNA that helps decode mRNA into a protein, and promoters are regions that initiate transcription.
Identify the role of exons: Exons are the coding regions of DNA and RNA that are transcribed into mRNA and then translated into proteins. They contain the actual genetic information that determines the amino acid sequence of proteins.
Recognize the function of each component: While terminators, promoters, mRNA, and tRNA play crucial roles in gene expression and protein synthesis, exons specifically encode the gene products.
Conclude that exons are the correct answer: Based on the understanding of gene structure and function, exons are the regions in DNA and RNA that encode actual gene products.
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