Pearson eText Microbiology: An Introduction -- Instant Access (Pearson+)
13th Edition
ISBN: 9780135789377
Author: Gerard Tortora, Berdell Funke
Publisher: PEARSON+
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Chapter 6, Problem 2R
Summary Introduction
To review:
About the macronutrients and its uses in the cell functions.
Introduction:
Microbes present in different environments require nutrients for their growth and
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Chapter 6 Solutions
Pearson eText Microbiology: An Introduction -- Instant Access (Pearson+)
Ch. 6 - Prob. 1RCh. 6 - Prob. 2RCh. 6 - Prob. 3RCh. 6 - Seven methods of measuring microbial growth were...Ch. 6 - By deep-freezing, bacteria can be stored without...Ch. 6 - A pastry chef accidentally inoculated a cream pie...Ch. 6 - Nitrogen and phosphorus added to beaches following...Ch. 6 - Differentiate complex and chemically defined...Ch. 6 - DRAW IT Draw the following growth curves for E....Ch. 6 - NAME IT A prokaryotic cell hitched a ride to Earth...
Ch. 6 - Two culture media were inoculated with four...Ch. 6 - Two culture media were inoculated with four...Ch. 6 - Use the following graph to answer questions 3 and...Ch. 6 - Use the following graph to answer questions 3 and...Ch. 6 - Assume you inoculated 100 facultatively anaerobic...Ch. 6 - The term trace elements refers to a. the elements...Ch. 6 - Which one of the following temperatures would most...Ch. 6 - Which of the following is not a characteristic of...Ch. 6 - Which of the following types of media would not be...Ch. 6 - An organism that has peroxidase and superoxide...Ch. 6 - E. coli was incubated with aeration in a nutrient...Ch. 6 - Clostridium and Streptococcus are both...Ch. 6 - Most laboratory media contain a fermentable...Ch. 6 - Flask A contains yeast cells in glucose-minimal...Ch. 6 - Clinical Applications and Evaluation 1. Assume...Ch. 6 - Heat lamps are commonly used to maintain foods at...Ch. 6 - The number of bacteria in saliva samples was...
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- Describe which enzymes are required for lactose and tryptophan metabolism in bacteria when lactose and tryptophan, respectively, are (a) present and (b) absent.arrow_forwardHow many of these strains of E. coli would have no ß-galactosidase activity?arrow_forward32. The antimetabolites inhibit: a) the ribosome assembly b) the ribosome movement c) cell respiration d) glycolysis e) the Krebs cyclearrow_forward
- What is/are the possible genotype(s) of an individual who is lactose tolerant?arrow_forwardDescribe the nitrogenase complex. How is the enzymeorganized? What are its unique components?arrow_forwardThe pathway shown below is used by a fungus to create Fructose-1,6-diphosphate from glucose. A silent mutation occurs in the gene that encodes enzyme 3. This fungus is grown on media that only contains the precursor. Discuss the effects of this mutation on: (i) The function of Enzyme 3 (ií) The production of Fructose-1,6-diphosphate Enzyme 1 Glucose-6- Enzyme 2 fructose-6- Enzyme 3 Fructose-1,6- Glucose phosphate phosphate diphosphatearrow_forward
- If an E. coli cell lost the ability to use the pentose phosphate pathway, which amino acids would it require as growth factors?arrow_forwardWhich of the following amino acids can act as nucleophiles in a protease active site (choose all that apply): a) Cysteine b) Alanine c) Leucine d) Serine e) Threoninearrow_forwardCarnitine acyltransferase I and II are required for: OA) transporting carnitine in the blood. OB) inserting carnitine into cell membranes. OC) translocation of fatty acids from cytosol to mitochondria. OD) transfer of ammonia to carnitine in the urea cycle.arrow_forward
- In eukaryotes, fatty acids are stored as triglycerides in cells that have A) Golgi that store fatty acids B) too little atp C) Lysosomes that synthesize glycogen from excess glucose D) Liposomes that contain an enzyme that performs dehydration synthesis E) mRNA that makes amino acids in to fat Explain whyarrow_forwardDraw the amino acid–Schiff base that forms in the breakdown of 3-hydroxykynurenine to yield 3-hydroxyanthranilate in the tryptophan degradation pathway (Fig.) and indicate which bond is to be cleaved.arrow_forwardIn eukaryotes, fatty acids are stored as triglycerides in cells that have: A) Golgi that store glucose, B) too little ATP, C) lysosomes that make glycogen, D) liposomes that contain an enzyme that performs dehydration synthesis to form triglycerides, E) mRNA that makes amino acids into fat.arrow_forward
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