Question
An image is shown here where a strand of mRNA is modified by spliceosome activity after it is transcribed. Which statement(s) accurately evaluate the importance of this activity? Select all that apply.
Responses
A All life on Earth can remove introns as part of their mRNA modification.All life on Earth can remove introns as part of their mRNA modification.
B Intron removal ensures the correct polypeptide will be translated from this mRNA.Intron removal ensures the correct polypeptide will be translated from this mRNA.
C All eukaryotes on Earth have the ability to remove introns with spliceosome activity.All eukaryotes on Earth have the ability to remove introns with spliceosome activity.
D Differential removal of introns can increase the diversity of proteins that are produced.Differential removal of introns can increase the diversity of proteins that are produced.
E This process occurs in the nucleus for prokaryotic cells and in the cytoplasm for eukaryotic cells.
Responses
A All life on Earth can remove introns as part of their mRNA modification.All life on Earth can remove introns as part of their mRNA modification.
B Intron removal ensures the correct polypeptide will be translated from this mRNA.Intron removal ensures the correct polypeptide will be translated from this mRNA.
C All eukaryotes on Earth have the ability to remove introns with spliceosome activity.All eukaryotes on Earth have the ability to remove introns with spliceosome activity.
D Differential removal of introns can increase the diversity of proteins that are produced.Differential removal of introns can increase the diversity of proteins that are produced.
E This process occurs in the nucleus for prokaryotic cells and in the cytoplasm for eukaryotic cells.
Answers
GPT-4o mini
The correct statements regarding the importance of spliceosome activity in mRNA modification are:
B: Intron removal ensures the correct polypeptide will be translated from this mRNA.
D: Differential removal of introns can increase the diversity of proteins that are produced.
### Evaluations of other options:
- **A:** This statement is incorrect because not all life on Earth (particularly prokaryotes) removes introns; introns are primarily a feature of eukaryotic genes.
- **C:** While most eukaryotes have the ability to remove introns with spliceosome activity, not all eukaryotes have the same spliceosomal mechanisms and capabilities, so this statement is overly broad.
- **E:** This statement is incorrect as prokaryotic cells do not have a nucleus, and therefore do not process mRNA in the same way; they do not typically undergo intron removal like eukaryotes do.
Thus, the correct responses are B and D.
B: Intron removal ensures the correct polypeptide will be translated from this mRNA.
D: Differential removal of introns can increase the diversity of proteins that are produced.
### Evaluations of other options:
- **A:** This statement is incorrect because not all life on Earth (particularly prokaryotes) removes introns; introns are primarily a feature of eukaryotic genes.
- **C:** While most eukaryotes have the ability to remove introns with spliceosome activity, not all eukaryotes have the same spliceosomal mechanisms and capabilities, so this statement is overly broad.
- **E:** This statement is incorrect as prokaryotic cells do not have a nucleus, and therefore do not process mRNA in the same way; they do not typically undergo intron removal like eukaryotes do.
Thus, the correct responses are B and D.