Microbiology: Principles and Explorations
9th Edition
ISBN: 9781118743164
Author: Jacquelyn G. Black, Laura J. Black
Publisher: WILEY
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Chapter 6, Problem 7SQ
Summary Introduction
Introduction: An exoenzyme is an enzyme that is secreted by a cell and functions externally. Eukaryotic and prokaryotic organisms produce exoenzymes that are vital for numerous biological process.
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Enzymes that are only produced when substrate is present are termed:
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A) All bacteria are autotrophs
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Chapter 6 Solutions
Microbiology: Principles and Explorations
Ch. 6 - What are the differences between the lag phase and...Ch. 6 - How does logarithmic rate of increase differ from...Ch. 6 - Prob. 1.3SCCh. 6 - Why does a direct microscopic count of bacteria...Ch. 6 - What does the ending -phile mean? Distinguish...Ch. 6 - What enzymes do most obligate anaerobes lack? How...Ch. 6 - Prob. 2.3SCCh. 6 - Prob. 3.1SCCh. 6 - Distinguish between the various kinds of media:...Ch. 6 - What is the purpose of a stock culture? Why is it...
Ch. 6 - Prob. 1CCSCh. 6 - Exactly 100 bacteria with a generation time of 30...Ch. 6 - In the above example, do you think that the number...Ch. 6 - Prob. 3CTQCh. 6 - Prob. 1SQCh. 6 - Match the following growth phase terms to their...Ch. 6 - Which of the following is the best definition of...Ch. 6 - Prob. 4SQCh. 6 - The most probable number (MPN) technique is a...Ch. 6 - Match the terms with their definitions:Ch. 6 - Prob. 7SQCh. 6 - Why do foods containing a high concentration of...Ch. 6 - Some bacteria have complex nutritional...Ch. 6 - Prob. 10SQCh. 6 - Which type of cell will shift to aerobic...Ch. 6 - Which of the following statements about endospores...Ch. 6 - Prob. 13SQCh. 6 - Blood agar is often used to observe changes in the...Ch. 6 - A bacterial medium that contains 20 grams of beef...Ch. 6 - MacConkey agar contains the dye, crystal violet,...Ch. 6 - Prob. 17SQCh. 6 - What are the purposes of carrying out the streak...Ch. 6 - Prob. 19SQCh. 6 - During quorum sensing, bacteria sense their...Ch. 6 - Prob. 21SQCh. 6 - Identify the position of each of the following on...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- a) bacteria are “obligate anaerobes.” What does this mean? On Earth, where might these organisms live? (Give examples.) b) Humans (and most Eukaryotic organisms) are obligate aerobes. What does this mean? On Earth, where might these organisms live? (Give examples.)arrow_forward5. Which of the biopolymers is correctly paired with its major function? A) protein: information encoding B) nucleic acids: energy storage C) lipids: information encoding D) polysaccharide: energy storage E) none of the abovearrow_forward70) The term Autotroph in bacteria refers to _____ source for an organism: a) Carbon b) Energy c) Electron d) Food e) Macromolecule71) A Chemolithotrophic organism gets its energy from: a) Chemical bond present in organic substance b) Chemical bond present in inorganic substance c) Chemical bond present in light d) a and c are correct e) none of the above72) Precursor metabolites are used in the biosynthetic pathways to: a) build elements b) assemble macromolecules c) assemble polymers d) monomers e) reduce sugararrow_forward
- Bringing glucose inside of a bacterium (via group translocation) requires energy. (a) What is the energy used for in this case? (b) When resources are limited for a bacterium, why would the bacterium be willing to spend energy to group translocate glucose?arrow_forwardThe majority of heterotrophic bacteria are (a) free-living chemoheterotrophs (b)photoautotrophs (c) chemo-autotrophs (d) facultative anaerobes (e) obligate anaerobes.arrow_forwardA molecule that is required by enzymes in order for the enzyme to be active is called a A) Apoenzyme B) Cofactor C) Synergist D) Antagonistarrow_forward
- Which of the following is an endoenzyme? A) amylase B) Desulfhydrase C) none are endoenzymes D) all are endoenzymes E) Gelatinasearrow_forwardWhich of the following factors does NOT help cells survive and grow well in an AEROBIC environment? a) Superoxide Dismutase b) Catalase c) Peroxidase d) Hydroxyl radicals e) Thioglycolatearrow_forward1.Most human bacterial pathogens are labeled as __ according to their temperature requirement: a) Aerophiles b) Aerobes c) Anaerobes d) Psychrophiles e) Mesophiles.2) The current model that describes the contents of the plasma membrane is best described as _______ model: a) Sandwich b) fluid-mosaic c) unit membrane d) ions and pumps e) semipermeable3) Bacterial cells that do not have the SOD & catalase enzymes are labeled as: a) Aerophiles b) Aerobes c) Anaerobes d) Complex e) Mesophiles.arrow_forward
- What modifications can be made to microbial metabolicprocesses in order for them to produce desirable products inamounts that are commercially profitable?(a) Modify organisms by genetic engineering(b) Alter environmental conditions(c) Alter nutrients available to microbes(d) Isolate mutants that produce large amounts of usefulproducts(e) All of the abovearrow_forward19. The similarity of one organism to another (for example a bacteria versus a human) is most easily done by comparing which biopolymer? A) nucleic acids B) polysaccharides C) proteins D) lipids E) all of the abovearrow_forwardWhich of the following is an example of a chemoorganoheterotroph? A.) An organism that gets its energy for ATP from the sun and its C from other organisms B.) An organism that gets its energy for ATP from organic molecules and its C from other organisms C.) An organism that gets its energy for ATP from the sun and synthesizes C-C bonds from simple molecules D.)An organism that gets its energy for ATP from inorganic molecules and synthesizes C-C bonds from simple moleculesarrow_forward
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