Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Chapter 19, Problem 19.5PS
Bacterial and Eukaryotic Protein Synthesis Compared. For each of the following statements, indicate whether it applies to protein synthesis in bacteria (Ba), in eukaryotes (E), in both (Bo), or in neither (N).
- (a) The mRNA has a ribosome-binding site within its leader region.
- (b) AUG is a start codon.
- (c) The enzyme that catalyzes peptide bond formation is an RNA molecule.
- (d) The mRNA is translated in the 3′ → 5′ direction.
- (e) The C-terminus of the polypeptide is synthesized last.
- (f) Translation is terminated by special tRNA molecules that recognize stop codons.
- (g) A 5’cap structure promotes formation of a translational initiation complex.
- (h) ATP hydrolysis is required to attach an amino acid to a tRNA molecule.
- (i) The specificity required to link the right amino acids to the right tRNA molecules is a property of the enzymes called aminoacyl-tRNA synthetases.
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Please help me with this question. More than one answer may be correct.
Elastin _______.
Options:
A)
has a repeating structure of 3 amino acids such as Gly-Pro-X
B)
crosslinks with numerous other elastin peptides to make an elastic fiber
C)
is physically attached to the smooth endoplasmic reticulum
D)
is physically attached to ribosomes
E)
is rich in hydrophobic residues
AAAGAGAAAAGAAUA
to AAAGAGAAAUGAAUA.
Suppose the codon sequence
has a single base pair mutation
If the old protein sequence was Lys-Glu-Lys-Arg-Ile, what will be the new sequence encoded by the mutant gene?
(Use the 3-letter amino acid abbreviations with hyphens and no spaces in between, i.e. Ser-Asn-Tyr-Leu-Pro.)
Submit Answer
Retry Entire Group No more group attempts remain
True or False. Explain.
A) At no time during protein synthesis does an amino acid make direct
contact with the mRNA being translated.
B) Because the two strands of DNA are complementary, the mRNA of a gene can be synthesized using either strand as a template.
Chapter 19 Solutions
Becker's World of the Cell (9th Edition)
Ch. 19 - Suppose a tRNA has the anticodon 3-CGU-5. What two...Ch. 19 - Kanamycin is an antibiotic that binds to bacterial...Ch. 19 - You are working in a lab to identify new alleles...Ch. 19 - Suppose you are using GFP fusion proteins to study...Ch. 19 - Enzymes can undergo allosteric regulation or...Ch. 19 - Suppose you use molecular biology techniques to...Ch. 19 - Prob. 19.1PSCh. 19 - Tracking a Series of Mutations. The following...Ch. 19 - Prob. 19.3PSCh. 19 - Prob. 19.4PS
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