Microbiology Fundamentals: A Clinical Approach
3rd Edition
ISBN: 9781259709227
Author: Marjorie Kelly Cowan Professor, Heidi Smith
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 6, Problem 5Q
Compare the effects of a hypertonic, hypotonic, and isotonic solution on an amoeba versus a bacterium.
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Your team suggests changing the temperature of the oil spill site in order to enhance the bioremediation process. Do you consider this decision effective? Why and why not? Explain, in your answer, the effect of changing the zone tension on the homeostasis capacity of the bacteria you use and their ability to withstand the osmotic pressure of the new surrounding solvent. In your answer, state how osmosis works and state the degree of tension of the solution (isotonic, hypertonic or hypotonic). Explain why osmosis is really just a special case of facilitated diffusion
If the bacteria within your medium suddenly die, can an alteration in osmotic balance be the reason why?
Would gram negative or gram positive bacteria have an advantage over the other in these tonicities?
Isotonic, hypertonic, hypotonic
Chapter 6 Solutions
Microbiology Fundamentals: A Clinical Approach
Ch. 6.1 - List the essential nutrients of a bacterial cell.Ch. 6.1 - Prob. 2AYPCh. 6.1 - List and define four different terms that describe...Ch. 6.1 - Prob. 4AYPCh. 6.1 - Compare and contrast the processes of diffusion...Ch. 6.1 - Identify the effects of isotonic, hypotonic, and...Ch. 6.1 - Name two types of passive transport and one type...Ch. 6.1 - Prob. 1NPCh. 6.1 - Prob. 2NPCh. 6.1 - Prob. 3NP
Ch. 6.1 - Prob. 1MMCh. 6.2 - List and define five terms used to express the...Ch. 6.2 - Summarize three ways in which microorganisms...Ch. 6.2 - Identify three important environmental factors...Ch. 6.2 - List and describe the five types of associations...Ch. 6.2 - Discuss characteristics of biofilms that...Ch. 6.2 - Which statements are true with respect to...Ch. 6.3 - Summarize the steps of cell division used by most...Ch. 6.3 - Define doubling time, and describe how it leads to...Ch. 6.3 - Compare and contrast the four phases of growth in...Ch. 6.3 - Identify one culture-based and one...Ch. 6.3 - Prob. 2MMCh. 6 - Which descriptors are likely to have applied to...Ch. 6 - Prob. 2QCh. 6 - Speculate about how earths atmosphere came to...Ch. 6 - Which of the following is true of passive...Ch. 6 - Compare the effects of a hypertonic, hypotonic,...Ch. 6 - Usually scientists looking for life on other...Ch. 6 - An organism that can synthesize all its required...Ch. 6 - Provide evidence in support of or refuting this...Ch. 6 - Develop an explanation for why biofilm bacteria...Ch. 6 - Most bacteria increase their numbers by a. sexual...Ch. 6 - Looking at figure 6.3, explain how a cell in a...Ch. 6 - In binary fission, the parent chromosome is...Ch. 6 - A cell exposed to a hypertonic environment will...Ch. 6 - Prob. 14QCh. 6 - Bacteria and archaea are ubiquitous on the planet....Ch. 6 - Prob. 16QCh. 6 - How can you explain the fact that an unopened...Ch. 6 - Prob. 18QCh. 6 - In a viable count, each ____ represents a ______...Ch. 6 - If an egg salad sandwich sitting in a car on a...Ch. 6 - Scientists now believe that most bacteria in...Ch. 6 - Prob. 1VC
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- Explain osmotic balance in cells. What happens to a cell that is placed in a hypotonic solution, hypertonic solution, or isotonic solution? What is special about the maintenance of osmotic balance in halophiles that would allow them to survive in high salt concentrations? What is the natural habitat of archaea species Halobacterium salinarum?arrow_forwardDenitrification occurs under: anaerobic conditions aerobic conditions both aerobic and anaerobic conditionsarrow_forwardA potato cube is placed in a solution. The volume of the potato increases. which statement below is the correct interpretation of this result? a) The potato is in an isotonic solution b) The potato is is in a hypotonic solution c) water is moving equally in and out of the potato d) The potato is in a hypertonic solutionarrow_forward
- A microbe cannot grow without using enzymes. Explain why bacteria are limited to growth within a given temperature range. Explain why bacteria are limited in growth within a specific pH range.arrow_forwardDescribe how each of the following physical factors affect microbial growth and aid in classification: a. temperature b. pH c. molecular oxygen d. osmotic pressure.arrow_forwardWhich of the following scenarios describes the process of osmosis? a) An amoeba engulfs a food particle. b) Sodium ions flow through the cell membrane. c) A carrier protein moves glucose into the cell.. d) A plant cell swells in a hypotonic environment.arrow_forward
- You inoculate 100 facultative anaerobic cells onto two media plates. You incubate one aerobically and one anaerobically. Which plate will have the greatest growth after 24 hours? Explain your answer. Look up facultative and anaerobicarrow_forwardExplain why bacteria are limited to growth within a given temperature range? Explain why bacteria are limited in growth within a specific pH range?arrow_forwardDescribe the steps in biofilm formation using the words planktonic organisms, quorum, quorum sensing, extracellular polymeric substances, and inducer molecule.arrow_forward
- Which statement among A - D is false? A) O Active transport processes allow a bacterium to maintain an ion gradient B) O Membrane permeant acids and bases can act as growth inhibitory agents towards bacteria. C) O Transport via group translocation results in modification of the incoming solute. D) O Bacteria tend to maintain their interior slightly hypertonic relative to the external environment. E) O None of A-D is false.arrow_forwardList and define five terms used to express a microbe’s optimal growth temperaturearrow_forwardWhat effect does solute concentration have on microbes? How can cells adapt when going from a low solute to a high solute environment and vice versa? What is a compatible solute? What microbial groups have a requirement for high solute concentrations? How do microbes differ in their response to water activity?arrow_forward
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