Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
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Chapter 10, Problem 9RQ
Summary Introduction
To review:
E. coli slows the production of ribosomes when there is a slow growth rate.
Introduction:
A ribosome is a minute particle that contains RNA (ribonucleic acid) which is found in all living cells for protein synthesis of cells. It contains two subunits, one small subunit which helps to read the mRNA (messenger ribonucleic acid) and another subunit is large that forms the polypeptide chain by joining the amino acids. They convert a genetic code into an amino acid sequence.
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:) Choose the statement that correctly explains how an antibiotic that inhibits protein
synthesis can be selective.
A) Antibiotics bind to the 70S bacterial ribosomes but not to the 80S eukaryotic
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ribosomes.
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B) Eukaryotic cells are impermeable to these antibiotics so the antibiotics cannot enter
them.
2)
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3)
4)
C) Eukaryotic cells inactivate these antibiotics.
D) Antibiotics prevent the synthesis of bacterial tRNAs but not eukaryotic tRNAs.
Infection occurs when
A) a person swallows microbes in/on food
B) contaminants are present on the skin
C) pathogens enter and multiply in body tissues
D) a person inhales microbes in the air
E) All of the choices are correct.
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moitetai neosolong (
moitostai legat (C
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Ampicillin, amoxicillin, mezlocillin, and penicillin G all
A) target the cell wall
B) have an expanded spectrum of activity
C) have resistance to the action of penicillinase server ingrat at egub…
Ribosomes in the cytoplasm capture mRNA that can be translated into an enzyme for the lysosome. a) Explain what happens from the time the enzyme begins to form in the cytoplasm until it ends up in the lysosome and also explains how the enzyme is transported to the lysosome?
Which is true of ribosomes found in eukaryotic cells? They:
A) contain DNA
B) synthesize carbohydrates
C) are attached to the Rough Endoplasmic reticulum (RER) and carry out the synthesis of proteins
D) are found inside the endoplasmic reticulum
E) are originally found associated with the endoplasmic reticulum in prokaryotic cells.
Chapter 10 Solutions
Microbiology: An Evolving Science (Fourth Edition)
Ch. 10.1 - Prob. 1TQCh. 10.2 - Prob. 1TQCh. 10.2 - Prob. 2TQCh. 10.2 - Prob. 3TQCh. 10.2 - Prob. 4TQCh. 10.2 - Prob. 5TQCh. 10.3 - Prob. 1TQCh. 10.3 - Prob. 2TQCh. 10.4 - Prob. 1TQCh. 10.5 - Prob. 1TQ
Ch. 10.5 - Prob. 2TQCh. 10.6 - Prob. 1TQCh. 10 - Prob. 1RQCh. 10 - Prob. 2RQCh. 10 - Prob. 3RQCh. 10 - Prob. 4RQCh. 10 - Prob. 5RQCh. 10 - Prob. 6RQCh. 10 - Prob. 7RQCh. 10 - Prob. 8RQCh. 10 - Prob. 9RQCh. 10 - Prob. 10RQCh. 10 - Prob. 11RQCh. 10 - Prob. 12RQCh. 10 - Prob. 13RQCh. 10 - Prob. 14RQCh. 10 - Prob. 1TQCh. 10 - Prob. 2TQCh. 10 - Prob. 3TQCh. 10 - Prob. 4TQ
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- a) What is the role of the lysosome in degrading proteins? What are the enzymes that degrade/hydrolyze proteins? How does the further degradation of amino acids occur?arrow_forwardWhich is true of Prokaryote cells? A) Because their DNA exists in a nucleoid area, the synthesis of proteins depends on random interactions between mRNA and rRNA, B) They contain membrane-bounded compartments or organelles. C) A true nucleus contains the DNA in the form of chromosomes D) Some contain mitochondria E) They contain many organelles in the cytoplasmarrow_forwardConsider two different proteins that are leaving from the Golgi in order to arrive in their common destination, a lysosome. In order for these two different proteins to be sent to the same place, what should they have in common? A) They must have the same primary structure B) They must have been imported into the cell by endocytosis. C) They must have the same tertiary structure D) They probably have the same glycosylation pattern. ..arrow_forward
- What is the energy source that powers the cotranslational movement of proteins across the endoplasmic reticulum?arrow_forwardRibosomes in the cytoplasm (cytosol) capture mRNA that can be translated into an enzyme (in this case a protease) to the lysosome. a) Describe what happens from the time the enzyme (protease) begins to form in the cytoplasm until it end up in the lysosome and explain how the enzyme is transported to the lysosome, Explain in terms of the clathrin and thethering proteinsarrow_forwardIn a lysosomal storage disease, newly synthesized lysosome hydrolases are secreted from the cells rather than being delivered to the lysosomes. From the list below, what is the most likely reason? Please EXPLAIN. a) The cis-Golgi network lacks a proton gradient b) The ER is unable to produce lysosomal vesicles c) Lysosomal enzymes are not phosphorylated in the rER d) Mannose is not phosphorylated in the cis-Goligi network e) All the hydrolase genes are mutated, resulting in synthesis by ribosomes free in the cytoplasm rather than on the endoplasmic reticulum membrane Give typing answer with explanation and conclusionarrow_forward
- Ribosomes in the cytoplasm (cytosol) capture mRNA that can be translated into an enzyme (in this case a protease) to the lysosome. a) Describe what happens from the time the enzyme (protease) begins to form in the cytoplasm until it end up in the lysosome and explain how the enzyme is transported to the lysosome.arrow_forwardDefine ribozyme.arrow_forward32. The antimetabolites inhibit: a) the ribosome assembly b) the ribosome movement c) cell respiration d) glycolysis e) the Krebs cyclearrow_forward
- Paramecium caudatum is a unicellular organism that can phagocytose and digest a bacterium using hydrolytic enzymes. Proteases are one example of hydrolytic enzymes that can break down proteins into polypeptides and amino acids. Name all of the organelles involved, in the order that the protease will go through. from its synthesis to its final destination. Note that this protease needs to be modified through the addition of a carbohydrate in order to be functional.arrow_forward1) It is declared that some ribozymes are tightly bound to proteins. What isn't the function of those proteins? Select one: A) Regulate the enzymatic activities of the ribozyme B) Conduct the enzymatic function of the ribozyme C) Help the RNA fold properly D) Stabilize the RNA and the ribozyme 2) What promotes the histone chaperone - CAF-I aggregation to the replication machinery? Select one: A) Nucleosome tall modification B) sliding DNA clamp C) Clamp Loader D) DNA polymerasearrow_forwardHow treatments for treacher Collins Syndrome disorder help ribosomes function properly?arrow_forward
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