How does mRNA transcribed from bacterial DNA differ from mRNA transcribed from eukaryotic DNA?Multiple choice question.Only bacterial mRNA contains introns.Only eukaryotic mRNA contains introns.Only eukaryotic mRNA encodes amino acids.Only bacterial mRNA encodes amino acids.
Question
How does mRNA transcribed from bacterial DNA differ from mRNA transcribed from eukaryotic DNA?Multiple choice question.Only bacterial mRNA contains introns.Only eukaryotic mRNA contains introns.Only eukaryotic mRNA encodes amino acids.Only bacterial mRNA encodes amino acids.
Solution
The correct answer is "Only eukaryotic mRNA contains introns."
Here's why:
-
Both bacterial and eukaryotic mRNA are transcribed from DNA and both encode amino acids. So, the options "Only eukaryotic mRNA encodes amino acids" and "Only bacterial mRNA encodes amino acids" are incorrect.
-
The main difference between bacterial and eukaryotic mRNA is the presence of introns. Introns are non-coding sequences of DNA that are initially transcribed into RNA but are cut out of the RNA molecule before it becomes functional. This process, known as splicing, occurs in eukaryotes but not in bacteria. Therefore, the correct answer is "Only eukaryotic mRNA contains introns."
-
Bacterial mRNA does not contain introns. In bacteria, genes are often organized into operons, or groups of genes controlled by a single promoter. The mRNA transcribed from an operon is polycistronic, meaning it contains the information to translate several proteins. This is different from eukaryotic mRNA, which is usually monocistronic, meaning it encodes only one protein. So, the option "Only bacterial mRNA contains introns" is incorrect.
Similar Questions
If source DNA is extracted from a eukaryotic organism and used to create transgenic bacteria, why will the mRNA transcribed from the recombinant DNA encode a defective protein in the bacteria?Multiple choice question.Eukaryotic DNA contains introns, which bacteria cannot remove.Bacterial DNA only contains introns, and so bacterial enzymes do not recognize the exons present in eukaryotic mRNA.Bacteria do not use the same genetic code as eukaryotes do.Eukaryotic DNA only contains exons, and the mRNA made from it will not be able to be translated by bacterial ribosomes.
Which of the following best describes a major difference between prokaryotic and eukaryotic mRNA transcription?Multiple choice question.In prokaryotes, a primary transcript is first synthesized, which is then split into several mature mRNAs.In eukaryotes, a primary transcript is first synthesized which is modified to become the mature mRNA.In eukaryotes, the mature mRNA transcript is directly synthesized from the DNA template.
Prokaryotes and eukaryotes differ in how they accomplish transcription and translation. Which of the following are unique to prokaryotic cells?SELECT ALL THAT APPLYMessenger RNA must travel out of the nucleus to reach a ribosome for translation.Uses a lot of cellular energy.Transcription occurs in the cytoplasm.RNA must be spliced after it is transcribed before it can be translated.Main enzyme is RNA polymerase.Translation of an RNA sequence can begin before transcription is complete.
Which of the following is true of mRNA transcription in eukaryotes? A. Daar is 3 belangrike vorme van RNA polimerase / There are 3 major forms of RNA polymerase B. mRNA ondergaan post-transkripsionele modifikasie / mRNA undergoes post-transcriptional modification C. Promoters sluit in die TATA, GC, en CAAT bokse / Promoters include the TATA, GC, and CAAT boxes D. Al die bogenoemde / All of the above
Which statement best describes the difference between prokaryotes and eukaryotes?Multiple ChoiceEukaryote DNA is not contained within a nucleus.Prokaryote DNA is not contained within a nucleus.Prokaryotes do not possess DNA while eukaryotes do.Prokaryotes use different nucleotides in their DNA than eukaryotes.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.