Microbiology: An Introduction
11th Edition
ISBN: 9780321733603
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: Benjamin Cummings
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Chapter 12, Problem 3R
Summary Introduction
Introduction
The structure above, which has an affinity for keratin are Trichophyton genus is a eukaryotic
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Plasmodium use digestive vacuoles (DV) to digest hemoglobin and heme from red blood cells into fuel sources for their life cycle. The DV is the site where host proteins are degraded by the parasite and then the peptide pieces are exported into the Plasmodium cytosol for use in biosynthesis. Plasmodium falciparum chloroquine resistance transporter, PfCRT, is a transporter in this DV membrane and its original function was unknown until recently. Researchers digested hemoglobin into peptide fragments and then tested the effect of these fragments on PfCRT function. VF-6-2 is one of these fragments of hemoglobin and apparently a natural substrate of PfCRT. Chloroquine, for which the transporter was originally named, is a substrate only of mutant transporters. One mutant PfCRT, for instance, has K76T in its substrate binding site and thus a significantly lower Km for chloroquine, inspiring the original name of the transporter, because of its importance for drug resistance in malaria…
Chapter 12 Solutions
Microbiology: An Introduction
Ch. 12 - Prob. 1RCh. 12 - A mixed culture of Escherichia coli and...Ch. 12 - Prob. 3RCh. 12 - Prob. 4RCh. 12 - Differentiate cellular and plasmodial slime molds....Ch. 12 - Prob. 6RCh. 12 - Prob. 7RCh. 12 - Prob. 8RCh. 12 - Prob. 9RCh. 12 - DRAW IT A generalized life cycle of the liver...
Ch. 12 - How many phyla are represented in the following...Ch. 12 - Prob. 2MCQCh. 12 - Prob. 3MCQCh. 12 - Fleas are the intermediate host for Dioylium...Ch. 12 - Prob. 5MCQCh. 12 - Prob. 6MCQCh. 12 - The definitive host for Plasmodium vivax is a....Ch. 12 - Prob. 8MCQCh. 12 - Prob. 9MCQCh. 12 - Prob. 10MCQCh. 12 - Alexandrium (red tide) has been called a plant...Ch. 12 - The life cycle of the fish tapeworm...Ch. 12 - Trypanosoma brucei gambiense-part (a) in the...Ch. 12 - Prob. 1CAECh. 12 - Prob. 2CAECh. 12 - A teenaged male in California complained of...
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- Describe the important characteristics of a glycocalyx in eukaryotesarrow_forwardWhat role do glycocalyces play in the ability of bacteria to survive and cause disease? ( this answer should have at least 6 functions of a glycocalyx. Each function should describe the mechanism that allows the glycocalyx to help the bacteria survive and/or cause disease.)arrow_forwardRaw red alga of the genus Porphyra is part of a traditionalJapanese diet. This alga is rich in porphyran, a polysaccharide that human digestive enzymes cannot break down. Marine bacteria that live on the alga produce a porphyran-digesting enzyme. In Japan, a homologousenzyme is common in one species of intestinal bacteria. Outside of Japan, people have the same species of intestinal bacteria, but they do not have the gene for the porphyran-digesting enzyme. The marine bacteria andthe intestinal bacteria are not close relatives, so they mostlikely did not inherit the enzyme from a shared ancestor.Propose a scenario to explain the observed distributionof the enzyme.arrow_forward
- Which describes the enzymatic activity/biochemical function of dynamin? Answers: bind to and (quickly) hydrolyze GTP for energy while pinching off vesicles from a donor membrane surface in collaboration with clathrin bind to signal sequences in nascent secretory proteins, the ribosome, and to the SRP receptor, bind to and (slowly) hydrolyze GTP when the ribosome is bound to the translocon bind to nuclear localization sequences and to importin-beta bind to and (slowly) hydrolyze GTP while recruiting (binding to) vesicle coat proteinsarrow_forwardThe highly pathogenic anaerobic bacterium Clostridium perfringens is responsible for gas gangrene, a condition in which animal tissue structure is destroyed. This bacterium secretes an enzyme that efficiently catalyzes the hydrolysis of the peptide bond indicated in red: where X and Y are any of the 20 common amino acids. How does the secretion of this enzyme contribute to the invasiveness of this bacterium in human tissues? Why does thisenzyme not affect the bacterium itself?arrow_forwardPompe disease is due to a deficiency in lysosomal α-1,4-glucosidase, also called acid maltase. Lysosomes function as recycling centers in the cell and normally degrade excess muscle glycogen into glucose for the energy-converting reactions of the glycolytic pathway. Pompe disease was described in 1932 by Dutch pathologist Johann Pompe, who recognized that lysosomes in the affected patient's accumulated large amounts of glycogen. However, Henri Hers—the same Belgian pathologist who described the symptoms of liver glycogen phosphorylase deficiency (Hers disease)—discovered in 1965 that Pompe disease was due to a lysosomal α-1,4-glucosidase deficiency. Enzyme deficiency Disease name Organ Disease symptoms Lysosomal α-1,4- glucosidase Pompe All organs Heart failure in infantile form; muscle defects in juvenile form Answer these questions: What protein/enzyme does the mutation effects? Symptoms and, if you can, how are the symptoms…arrow_forward
- The SOS response repairs extensive damage in prokaryotic cells. Why would this process be maladaptive for a multicellular eukaryote?arrow_forwardIn the presence of oxygen, the mitochondrion in yeast is used for aerobic respiration,however, under anaerobic conditions,the yeast mitochondria have been found to have other function. Identify and briefly discuss four of these functionsarrow_forwardIn Spirogyra, some cells in one of the two filaments become empty after conjugation. Give reason.arrow_forward
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