Campbell Biology In Focus, Loose-leaf Edition (3rd Edition)
3rd Edition
ISBN: 9780134895727
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky
Publisher: PEARSON
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Textbook Question
Chapter 15.3, Problem 1CC
WHAT IF? Suppose the mRNA being degraded in Figure 15.13 coded for a protein that promotes cell division in a multicellular organism. What would happen if a mutation disabled the gene for the miRNA that triggers this degradation?
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Q14: The figure below shows a ribosome in the process of translating an mRNA with the sequence:
5'..AUGCCGUAUGCUCUUUA...3'
Elongation
3
5
3
3
LAUGEEGUAUGCU
UACGGC
CG AUGC EUT
P sitez
UAC
A site
A
Met
Pro
Pro
Met
Anticodon
Met
Amino
Incoming-
tRNA
terminus
Pro
© 2001 Sinauer Associates, Inc.
The right side shows the ribosome with an empty A site aligned with the codon 5’UAU 3’.
The next tRNA to occupy the A site on the ribosome will have what anti-codon sequence
( label 5' and 3’)? Keep in mind the wobble pairing rules and make sure your answer is
consistent with the genetic code. Explain your answer.
а.
b. Suppose, just as the ribosome started translating the mRNA, the cell suddenly lost
all of its alanine tRNAs. Using the figure above as a guide, draw and label the state
the ribosome would arrest in.
Chapter 15 Solutions
Campbell Biology In Focus, Loose-leaf Edition (3rd Edition)
Ch. 15.1 - How does binding of the trp corepressor to its...Ch. 15.1 - Describe the binding of RNA polymerase,...Ch. 15.1 - WHAT IF? A certain mutation in E. coli changes the...Ch. 15.2 - Prob. 1CCCh. 15.2 - Compare the roles of general and specific...Ch. 15.2 - Prob. 3CCCh. 15.3 - WHAT IF? Suppose the mRNA being degraded in Figure...Ch. 15.3 - MAKE CONNECTIONS Inactivation of one of the X...Ch. 15.4 - Prob. 1CCCh. 15.4 - WHAT IF? Study the microarray in Figure 15.17. If...
Ch. 15 - If a particular operon encodes enzymes for making...Ch. 15 - The functioning of enhancers is an example of A. a...Ch. 15 - Which of the following is an example of...Ch. 15 - Prob. 4TYUCh. 15 - Prob. 5TYUCh. 15 - Which of the following would not be true of cDNA...Ch. 15 - Prob. 7TYUCh. 15 - SCIENTIFIC INQUIRY Imagine you want to study one...Ch. 15 - FOCUS ON EVOLUTION DNA sequences can act as tape...Ch. 15 - FOCUS ON INTERACTIONS In a short essay (100150...Ch. 15 - Prob. 11TYU
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- Q1: In your own words, define RNA splicing. When during gene expression does it occur? Q2: What do you predict would happen if the introns were not removed from RNA before translation? Why would it be a problem if the introns were not removed? Q3: Where is the mRNA destined to go once it has been transported out of the nucleus?arrow_forwardNeed answer in short and ASAParrow_forwardGive typed full explanationarrow_forward
- Plz asaparrow_forwardHey, I need help with this: Describe the main events that occur after transcription to generate a mature mRNA and ensure its correct localisation in the cell. Please include splicing, 5' and 3' modifications, RNA export from the nucleus, and how some mRNAs are localised within the cytoplasm. Please be very detailed and long explanation ,and dont copy from google answer in your own words asap pleasearrow_forwardQ10. Does frame +2 have an ORF in the coding region of this exon? What about frame +1 and frame +3? Q11. Given that 3 of the 64 possible codons are stop codons, what is the chance of having a stop codon at any given position, assuming that the sequence is random?arrow_forward
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