Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 17, Problem 11PIAT
What better not be for dinner?
Eating even a single death cap mushroom (Amanita phalloides) can be fatal due to a compound called α-amanitin, a toxin that inhibits transcription.
What would you predict to be the immediate outcome of adding α -amanitin to a cell?
a. reduced DNA synthesis
b. reduced production of one or more types of RNA
c. reduced binding of tRNAs to anticodons
d. reduced activity of ribosomes translating mRNA
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1)You add a drug to cells that can pass through hydrophilic or hydrobic environments (e.g., membranes & cytosol). The drug specifically prevents the binding of KDEL (ER retention signal) to any other molecules. In the short term, what would happen to the synthesis and localization of translocon proteins?
a. New complete translocon proteins would be made, but they would end up in the golgi apparatus.
b. New complete translocon proteins would be made, but they would end up at the plasma membrane
c. No new intact translocon proteins would be synthesized
d. New complete translocon proteins would be made, but they would be secreted
e. New complete translocon proteins would be made and localized normally
The structure of a prodrug used for treating people with HIV virus (human immunodeficiency virus) and AIDS is shown below. This molecule is a precursor of a protease inhibitor that competitively inhibits HIV protease due to its resemblance to the proteolytic site of the enzyme. Which process in the viral life cycle does this inhibitor target directly ?
Group of answer choices
a. viral protein processing for making new viruses
b. viral mRNA synthesis
c. viral DNA integration into the host cell DNA
d. viral DNA synthesis
What is the role of ribosomes in protein synthesis? *
A. they carry proteins to the site of action
B. they provide a source of amino acids
C. they provide a site from tRNAs to link to mRNAs
D. they translate the basic DNA code using tRNA
Consider the following DNA bases sequence 3' TAT CGG 5'. what dipeptide is formed if a DNA point mutation converts CGG to CGT? *
A. Val-Ala
B. Asp-Glu
C. Ala- Ala
D. Gly-Ala
A tRNA molecule possesses the anticodon 5' CGU 3' , which amino acid will this tRNA molecule carry? *
A. Threonine
B. Valine
C. Alanine
D. Arginine
What will most likely be the effect of the change in the DNA molecule? *
A. the change will cause a harmful mutation
B. the DNA molecule will be unable to replicate…
Chapter 17 Solutions
Biological Science (7th Edition)
Ch. 17 - Prob. 1TYKCh. 17 - Prob. 3TYKCh. 17 - Prob. 4TYKCh. 17 - 5. RNases and proteases are enzymes that destroy...Ch. 17 - Prob. 6TYUCh. 17 - The nucleotide shown below is called cordycepin...Ch. 17 - Prob. 10TYPSSCh. 17 - What better not be for dinner? Eating even a...Ch. 17 - 12. α-Amanitin inhibits transcription by binding...Ch. 17 - Prob. 13PIAT
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