Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 17, Problem 23TYK
Summary Introduction
Introduction: Mutations refer to the alteration in the genome of an organism. Mutation is caused as a result of an error in the replication process of DNA. Mutations can be neutral, beneficial, or harmful for any organism. The alterations caused as a result of mutations are permanent in nature.
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Select the best explanation of the unfolded protein response (UPR):
O A. The UPR senses misfolded proteins through detection of proteins tagged with polyubiquitin chains and sends them for degradation in the lysosome
B. The UPR senses misfolded proteins through recognition of specific oligosaccharide conformations and sends them for degradation via the
proteasome
C. The UPR senses high levels of misfolded proteins in the ER and activates ubiquitin ligases to add ubiquitin to the misfolded proteins and target them
for secretion from the cell.
D. The UPR senses ER stress in the form of high levels of misfolded proteins and signals the cell to halt translation and induces expression of ER
chaperones
The phosphorylation of proteins is an important regulatory mechanism. a. Name three amino acids that are frequently phosphorylated in regulated proteins. b. Draw the phosphorylated version of the amino acids named in part “a.”
Indicate (x) if the following statements about synthesis of proteins containing an ER
signal sequence are True or False:
True False
i. Translation is initiated by ribosomes located on the ER membrane
The signal recognition particle (SRP) binds a sequence of nonpolar
(hydrophobic) amino acids.
ii.
iii.
The ER signal sequence may be cleaved by signal peptidase on the
cytoplasmic side of the ER membrane.
iv.
The part of a transmembrane protein that will ultimately be located
outside of the cell is inserted into the lumen of the ER during
translation.
A stop transfer sequence is a series of polar amino acids that halts
translocation of a newly synthesized peptide into the ER lumen.
Chapter 17 Solutions
Study Guide for Campbell Biology
Ch. 17 - a. In what three ways does RNA differ from DNA? b....Ch. 17 - Prob. 2IQCh. 17 - Prob. 3IQCh. 17 - How does the mRNA that leaves the nucleus differ...Ch. 17 - Prob. 5IQCh. 17 - In the following diagrams of polypeptide...Ch. 17 - What determines if a ribosome becomes bound to the...Ch. 17 - Define the following terms and explain what type...Ch. 17 - You have been introduced to several types of RNA...Ch. 17 - Prob. 2SYK
Ch. 17 - What is the genetic code? Explain redundancy and...Ch. 17 - Prepare a concept map showing the types and...Ch. 17 - Prob. 1TYKCh. 17 - Transcription involves the transfer of information...Ch. 17 - Prob. 3TYKCh. 17 - Prob. 4TYKCh. 17 - Which of the following is a statement of the...Ch. 17 - Prob. 6TYKCh. 17 - Prob. 7TYKCh. 17 - Prob. 8TYKCh. 17 - Which of the following is true of RNA processing?...Ch. 17 - Prob. 10TYKCh. 17 - Prob. 11TYKCh. 17 - Prob. 12TYKCh. 17 - Prob. 13TYKCh. 17 - Prob. 14TYKCh. 17 - What type of bonding is responsible for...Ch. 17 - Prob. 16TYKCh. 17 - Prob. 17TYKCh. 17 - Prob. 18TYKCh. 17 - Prob. 19TYKCh. 17 - Prob. 20TYKCh. 17 - Prob. 21TYKCh. 17 - Prob. 22TYKCh. 17 - Prob. 23TYKCh. 17 - Prob. 24TYKCh. 17 - Prob. 25TYKCh. 17 - Prob. 26TYKCh. 17 - Prob. 27TYKCh. 17 - Prob. 28TYK
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- Which factor has NOT been shown to play a role in determining the specificity of protein kinases? a. protein tertiary structure b. protein quaternary structure c. primary sequence at phosphorylation site d. disulfide bonds near the phosphorylation site e. residues near the phosphorylation sitearrow_forwardConsider the genes that specify the structure of hemoglobin. Arrange the following events in the most likely sequence in which they would take place.a. Anemia is observed.b. The shape of the oxygen-binding site is altered.c. An incorrect codon is transcribed into hemoglobinmRNA.d. The ovum (female gamete) receives a high radiationdose.e. An incorrect codon is generated in the DNA of ahemoglobin gene.f. A mother (an X-ray technician) accidentally stepsin front of an operating X-ray generator.g. A child dies.h. The oxygen-transport capacity of the body is severelyimpaired.i. The tRNA anticodon that lines up is one of a typethat brings an unsuitable amino acid.j. Nucleotide-pair substitution occurs in the DNA of agene for hemoglobinarrow_forwardPlease answer completely both questionsarrow_forward
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