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Campbell Biology in Focus; Modified Mastering Biology with Pearson eText -- ValuePack Access Card -- for Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780134433776
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman
Publisher: PEARSON
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Textbook Question
Chapter 14.3, Problem 3CC
WHAT IF? What would be the effect of treating cells with an agent that removed the cap from mRNAs?
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Students have asked these similar questions
E22. The method of Northern blotting is used to determine the amount
and size of a particular RNA transcribed in a given cell type.
Alternative splicing (discussed in Chapter 12) produces mRNAs
of different lengths from the same gene. The Northern blot shown
here was made using a DNA probe that is complementary to the
MRNA encoded by a particular gene. The mRNA in lanes 1 through
4 was isolated from different cell types, and equal amounts of total
cellular MRNA were added to each lane.
2
3
4
Lane 1: MRNA isolated
from nerve cells
Lane 2: MRNA isolated
from kidney cells
Lane 3: MRNA isolated
from spleen cells
Lane 4: MRNA isolated
from muscle cells
Explain these results.
| |
MRNA- based therapeutics
The following questions:
Which research group has initially developed the technology?
What was the purpose behind the invention of the technology?
What type of questions could be answered with the technology?
What are the applications of the technology?
Are there any clinical trials associated with the method?
What is the mechanism of action for the technology?
Q34. mRNA decay (breakdown) can play an important role in controlling protein abundance.
Which of the following scenarios correctly describes a relationship between mRNA decay and protein abundance?
A. A decrease in transcription with an increase in the rate of mRNA decay can result in increased protein abundance.
B. An increase in transcription with an increase in the rate of mRNA decay can result in no change in protein abundance.
C. An increase rate of protein synthesis but failure to form an apoprotein can be explained by a decrease in mRNA decay.
D. None of the above
Chapter 14 Solutions
Campbell Biology in Focus; Modified Mastering Biology with Pearson eText -- ValuePack Access Card -- for Campbell Biology in Focus (2nd Edition)
Ch. 14.1 - MAKE CONNECTIONS In a research article about...Ch. 14.1 - What polypeptide product would you expect from a...Ch. 14.1 - DRAW IT The template strand of a gene contains the...Ch. 14.2 - What is a promoter? Is it located at the upstream...Ch. 14.2 - What enables RNA polymerase to start transcribing...Ch. 14.2 - WHAT IF? Suppose X-rays caused a sequence change...Ch. 14.3 - Given that there are about 20,000 human genes, how...Ch. 14.3 - How is RNA splicing similar to how you would watch...Ch. 14.3 - WHAT IF? What would be the effect of treating...Ch. 14.4 - What two processes ensure that the correct amino...
Ch. 14.4 - Discuss the ways in which rRNA structure likely...Ch. 14.4 - Describe how a polypeptide to be secreted is...Ch. 14.4 - WHAT IF? DRAW IT Draw a tRNA with the anticodon...Ch. 14.5 - What happens when one nucleotide pair is lost from...Ch. 14.5 - Prob. 2CCCh. 14.5 - WHAT IF? DRAW IT The template strand of a gene...Ch. 14 - In eukaryotic cells, transcription cannot begin...Ch. 14 - Prob. 2TYUCh. 14 - The anticodon of a particular tRNA molecule is A....Ch. 14 - Prob. 4TYUCh. 14 - Which component is not directly involved in...Ch. 14 - Prob. 6TYUCh. 14 - Prob. 7TYUCh. 14 - Prob. 8TYUCh. 14 - Fill in the following table: Type of RNA Functions...Ch. 14 - SCIENTIFIC INQUIRY Knowing that the genetic code...Ch. 14 - Prob. 11TYUCh. 14 - FOCUS ON INFORMATION Evolution accounts for the...Ch. 14 - SYNTHESIZE YOUR KNOWLEDGE Some mutations result in...
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- Need help:, The rRNAs are isolated from the large subunit of a bacterial ribosome and separated by density gradient centrifugation. Draw the resulting density gradient and label the bands observed. Which rRNA is longest?arrow_forwardMatching type Choices are in the picture 6. RF1 and RF2 recognize the three bases to terminate the process 7. CAAT box is found 80 nucleotides from the actual site 8. rho factor and sequence of uracil in a loop conclude the process 9. sigma factor binds to RNA polymerase in the promoter region 10. methionine is removedarrow_forwardQ15. Some viruses that infect E. coli produce an “anti-terminator” protein that causes RNA polymerase to “ignore” the termination signal of one virus gene and continue transcribing right into the next gene. What might this anti-terminator protein do? A. Bind to DNA, causing a loop that prevents the RNA polymerase from reaching the termination signal in DNA. B. Bind to mRNA to prevent it from complementary base pairing with itself at the terminator signal. C. Bind to the termination factor, keeping it away from ribosomes that reach the stop codon. D. Bind to the polyadenylation signal, preventing the action of the RNAase clipping enzyme.arrow_forward
- please help, will rate! What is the difference between obligate and non-obligate chain terminating nucleotides? How were sofosbuvir and remdesivir modified to make them non-obligate terminators?arrow_forwardWhat are the differences between protein subunit vaccines and mRNA vaccines?” “2. What is the minimal inhibitory concentration (MIC, the question means in general, not of a specific drug)? Why might different bacteria have different MICs to different drugs?” “3. Knowing what you know now about misuse of antibiotics, is it beneficial or harmful to stop including the antiseptic triclosan in soaps?”arrow_forwardYes or no? Is sequence of riboprobe identical to the mrna produced by gene in situ hybridization? does column of purification in DNA allow it to flow while other molecules are trapped ?arrow_forward
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