Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 10.3, Problem 2TYK
Summary Introduction
Introduction:
Capping is a post modification event in the RNA of eukaryotes. In capping methyl guanosine triphosphate is added to 5’ end of mRNA transcript. The guanosine is linked to mRNA via 5’-5’ triphosphate linkage.
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Which of the following is a function of the 7-methylguanosine cap?a. Exit of mRNA from the nucleusb. Efficient splicing of pre-mRNAc. Initiation of translationd. All of the above are functions of the cap.
Which of the following is a function of the 7-methylguanosine cap?
a. Exit of mRNA from the nucleus
b. Efficient splicing of pre-mRNA
c. Initiation of translation
d. All of the above
Failure to add the 3’ polyA tail will result in which of the following?
The prokaryotic mRNA cannot be translated
A break in the 5’-5’ triphosphate bond
The eukaryotic mRNA is not transported outside the nucleus
No changes, the polyA tail is not necessary
Chapter 10 Solutions
Principles of Biology
Ch. 10.1 - What is the direction of flow of genetic...Ch. 10.1 - Prob. 1TYKCh. 10.1 - Prob. 2TYKCh. 10.1 - Prob. 3TYKCh. 10.2 - How would removing a terminator from a gene affect...Ch. 10.2 - Prob. 1BCCh. 10.2 - Prob. 1TYKCh. 10.2 - Prob. 2TYKCh. 10.3 - Do the ends of protein-encoding genes have a poly...Ch. 10.3 - The splicing of pre-mRNA in eukaryotes involves...
Ch. 10.3 - Prob. 2TYKCh. 10.4 - Prob. 1CCCh. 10.4 - Prob. 2CCCh. 10.4 - Prob. 1TYKCh. 10.4 - Prob. 2TYKCh. 10.5 - Prob. 1CCCh. 10.5 - Prob. 1BCCh. 10.5 - Based on the gene sequences shown here, pick two...Ch. 10.5 - Prob. 1TYKCh. 10.5 - Prob. 2TYKCh. 10.5 - Prob. 3TYKCh. 10.6 - Prob. 1CCCh. 10.6 - Prob. 1TYKCh. 10.6 - Prob. 2TYKCh. 10 - Which of the following best represents the central...Ch. 10 - Prob. 2TYCh. 10 - Prob. 3TYCh. 10 - Prob. 4TYCh. 10 - Prob. 5TYCh. 10 - Prob. 6TYCh. 10 - The legion of a tRNA that is complementary to a...Ch. 10 - Prob. 8TYCh. 10 - Prob. 9TYCh. 10 - Prob. 10TYCh. 10 - Lets suppose a gene mutation changed the sixth...Ch. 10 - What is the function of an aminoacyl-tRNA...Ch. 10 - A principle of biology is that the genetic...Ch. 10 - Prob. 1CBQCh. 10 - Prob. 2CBQ
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- The following segment of DNA codes for a protein. The uppercase letters represent exons. The lowercase letters represent introns. The lower strand is the template strand. Draw the primary transcript and the mRNA resulting from this DNA.arrow_forwardThe genetic code is defined as a series of _______________ in _______________. (a) anticodons; tRNA (b) codons; DNA (c) anticodons; mRNA (d) codons; mRNA (e) codons and anticodons; rRNAarrow_forwardPortions of eukaryotic mRNA sequence that are removed during RNA processing are . a. exons b. caps c. poly-A tails d. intronsarrow_forward
- Eukaryotic mRNA: usessnRNPs to cut out introns and seal together translatableexons. uses a spliceosome mechanism made of DNA to recognizeconsensus sequences to cut and splice. has a guanine cap on its 39 end and a poly(A) tail on its 59 end. is composed of adenine, thymine, guanine, and cytosine. codes the guanine cap and poly(A) tail from the DNAtemplate.arrow_forwardWhich of the following is not directly involved in translation? mRNA RNA Polymerase Ribosomes tRNA Elongation Factorsarrow_forwardWhich of the following help(s) to stabilize mRNA by inhibiting degradation? a. Introns b. 3'-poly(A) tail c. both the 3' cap and the 3'-poly(A) tail d. 3' cap e. exonsarrow_forward
- Which of the following is involved in the termination of translation in bacteria? RF1 and RF2 A tRNA that binds to the stop codon EF-Tu and EF-G An amino acid specified by a stop codon A hairpin-loop structure on the mRNAarrow_forwardWhich modification of eukaryotic mRNA is likely absent if the mRNA can leave the nucleus but cannot bind the ribosome? Group of answer choices splicing together of exons removal of introns 3′ polyadenylated tail 7-methylguanosine cap on the 5′ end RNA editingarrow_forwardWhich of the following segments of RNA are retained after conversion of a pre-mRNA to a mature mRNA? Group of answer choices Introns Exons Codons Nucleotidesarrow_forward
- Of the following, which is a modification made to the pre-mRNA of eukaryotes before translation? a. The 5’ end receives a poly-A tail b. All of the above c. The 3’ end receives a cap d. Introns are cut out and exons are spliced togetherarrow_forwardWhich of the following would not be found in a mature mRNA in a eukaryotic cell? A Star Codon B Poly-A tail C Promoter D Exonsarrow_forwardWhich of the following regions of RNAs are translated?a. 5' UTRb. exonsc. intronsd. 3' UTRe. poly-Aarrow_forward
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