Answer please A Moving to the next question prevents changes to this answer.Question 30Which of the following is correct while performing colony count on a microbial culuture plate--?none of these are correct.A.It should only be done on special growth media.OB.It is assumed that each colony arose from one organism's colony forming unit.C.Only viable cells in the colonies are counted.OD.A Moving to the next question prevents changes to this answer.

A growth medium is intended to promote the growth of a variety of microorganisms or cells by the…

Question 30 Which of the following is correct while performing colony count on a microbial culuture plate- none of these are correct. OA. It should only be done on special growth media. B. OC. It is assumed that each colony arose from one organism's colony forming unit. O Only viable cells in the colonies are counted.

Question 30 Which of the following is correct while performing colony count on a microbial culuture plate- none of these are correct. OA. It should only be done on special growth media. B. OC. It is assumed that each colony arose from one organism's colony forming unit. O Only viable cells in the colonies are counted.

Principles Of Pharmacology Med Assist

6th Edition

ISBN:9781337512442

Author:RICE

Publisher:RICE

Chapter16: Antifungal, Antiviral, And Immunizing Agents

Section: Chapter Questions

Problem 14RQ

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THIS IS A MULTIPART QUESTION, PLEASE ANSWER ALL Using the image: 1. How would you categorize this medium? (Living/nonliving, Synthetic/complex, Rich/minimal) Briefly explain your responses. 2. Name the ingredient(s) that match the following nutrients: a. Source(s) of carbon b. Source(s) of nitrogen c. At least one source of minerals d. At least one source of growth factors, if any 3. What about this medium would change if agar were added as an ingredient? 4. Would you expect this medium to be differential, selective, or both? Explain your response.
Question 2 A specimen transferred onto a fresh agar plate is initially in which phase of bacterial growth? Question 2 options: a) Exponential b) Death c) Lag d) Stationary
The thermal death point is best described as:(a) The highest temperature that will support growth of amicrobial culture(b) The length of time required for killing 100% of mi-crobes in a 24-hour culture that is heated to 100°C(c) The temperature at which a previously growing 24-hourculture will begin to die(d) The temperature at which 100% of the microbes in a24-hour culture will be killed in 10 minutes
According to the Liebig's Law of Minimum, which condition of certain growth factor limits growth of microorganisms? * A. factor in abundance B. factor in optimal C. factor in minimum D. factor in maximum 2. Growth is best when microbes are incubated at ______ level within its tolerance range. * A. minimum B. maximum C. optimum D. magnanimous 3. At what phase of microbial growth when microbial growth and reproduction is fastest? * A. death phase B. log phase C. lag phase D. stationary phase 4. Most human pathogens are ______ with regard to temperature range of tolerance for optimum growth. * A. thermophiles B. mesophiles C. psychrophiles D. xerophiles 5. Which adaptations are developed by thermophiles to withstand extremely high temperature? Check all that apply. * ( ) high proportion of unsaturated fatty acids in the cell membrane ( ) high cytosine-guanine nitrogenous bases ( ) more saturated fatty acids in cytoplasmic membrane ( ) heat-stable enzymes
A drug failed to work. Even if resistance is not an issue, the antimicrobials are found to only have a discrete range of bacteria that they can exert their effects on. Why is this the found case? Question options: Microbial components vary over different species and strains. If the organism naturally doesn't express the target component, the drug won't be able to exert an effect on it. Antimicrobials are designed to be effective for a predetermined period of time. An older antibiotic can't exert any effects on a new microbial strain. There is a different antimicrobial designed for every strain of bacteria. As a result there is no crossover in action due to selective targeting. The body filters antimicrobial compounds to interact with their target microorganism. Until research determines how to control this, antimicrobials will only ever have a very discrete range of targets.
You are a doctor and patient of yours comes in with an infection related to a medical device that they recently had implanted. You discover that there is a complex microbial communities grown tightly adhered to the surface of the medical device, making it harder to treat. This microbial community is a called a ________. (Check spelling before submitting.)
A microbe is only capable of growth at pH range of 8.5-10 in the presence of atmospheric levels of oxygen. Which statements are correct? Mark all that apply. A.)The microbe is likely to be a human pathogen B.)The microbe is a mesophile C.)The microbe is an obligate aerobe D.) The microbe is an alkiliphile
Microbial growth is measured by what parameter?(a) Increased cell size(b) Increased size of cellular components(c) Increase in total number of cells(d) b and c(e) a and b
). Consider a culture medium on which only gram-positive organisms such as Staphylococcus aureus colonies can grow due to an elevated NaCl level. A yellow halo surrounds the growth, indicating the bacterium fermented sugar in the medium, decreasing the pH as a result and changing the color of a pH indicator chemical. This type of medium would be referred to as a(n): A) Selective medium. B) Differential medium. C) Enrichment culture. D) Selective and differential medium. E) Differential and enrichment culture.
Suppose you have joined to a lab lately for your undergraduate research and your supervisor isan environmental biotechnologist and interest includes various aspects of microbial diversity.Your supervisor wants you to figure out the following questions:I. What do you want to know about a newly discovered microbe? II. How do you screen that microbe for the presence of nucleic acid? III. What would be the assessment for finding the relationship between the new and alreadyexisting one?
Which of the following statements regarding microbial death is FALSE? Question options: cell walls are targeted by many microbial control agents the effectiveness of an antibacterial agent is a funciton of its microbial death rate the rate at which microbes are killed is termed the microbial death rate all of these statements are TRUE few antimicrobial agents function through the disruption of protein structure under a given set of conditions, the fraction of a microbial population that dies per minute is typically constant over time
What is the difference in microbial population from water sediment and neustonic source? A. Ratio of phototrophic and heterotrophic microbes. B. Ratio of anaerobic microbes to aerobic microbes. C. Ratio of heterotrophic and cellulolytic microbes. D. All statements are acceptable descriptions.