You are given an unknown bacterial culture and you want to determine if it is resistant to antibiotics To test this, you plate the bacterial culture on two plates, one that has streptomycin (an antibiotic) and one without streptomycin. Which of the following outcomes would you most likely observe if the bacteria is antibiotic resistant? No bacterial growth on either plate O Bacterial growth on both plates Bacterial growth on only the plate with streptomycin Bacterial growth on only the plate without streptomycin

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A: MSA stands for Mannitol Salt Agar, and it is commonly used as a medium for selective and…

Q: There are two bacteria, and I have to find out the organism. I did gram staining, and I found out…

A: Gram staining is a laboratory technique used to differentiate and classify bacteria into two major…

Q: A patient enters the clinic demonstrating signs and symptoms of meningitis.  A spinal tap is…

A: Meningitis is the infection that affects the delicate membranes called meninges that cover the…

Q: Peptidoglycan on bacterial cell walls is stained by crystal violet dye and for this reason those…

A: True

Q: Based on the data below, how much more UV resistant was B. licheniformis relative to S. aureus? (All…

A: UV radiation cause production of large number of ROS and also get absorbed into DNA thus leads to…

Q: You have a mixed culture of 2 different bacterial species. One of the species is Gram negative…

A: Answer: Gram negative bacilli are those rod shaped bacteria which have thin peptidoglycan layer…

Q: Blood agar is a differential medium that will show us a clear zone around a colony of normal flora…

A: A differential medium is made up of chemicals or composition that would help us to determine…

Q: During a phenotypic method of identifying an unknown microbe, the specimen was noted to be positive…

A: Introduction The micro-organism is the organism that is too small to be seen with the naked eye. It…

Q: You have a culture that has 5 X103 cfu/ml of bacteria in it. You perform a serial dilution by adding…

A: In microbiology and bacteriology, the technique of serial dilution is a fundamental method used to…

Q: What is the correct shape of the unknown bacterium growing on your MacConkey agar?

A: Macconkey Agar This agar includes bile salts, which are found in the gut. Bile salts help in…

Q: A sample of water was enumerated using a counting chamber (haemocytometer) and 220 bacterial cells…

A: The viable plate count, or simply plate count, is a count of viable or live cells. It is based on…

Q: Samples from an ill patient were collected by a physician for testing. A bacterial infection is…

A: Infections are the due to the activity of microbes in the body. Microbes can colonize in human body.…

Q: Is this a microbial formation visible to the naked eye? Explain. Leg abscess aspirate swabbed onto…

A: Microbes are biological entities that can not be seen by the naked eyes due to their very small…

Q: You are working in a medical lab and receive a urine sample from a patient that is displaying…

A:

Q: Step #1 Culture and perform a Gram-stain on the Super Bug You culture the Super Bug by swabbing the…

A: Bacteria are simple unicellular prokaryotic microorganisms that lack membrane bound organelles and…

Q: The size of the inhibition zone depends on conditions such as: Multiple Choice The concentration of…

A: Inhibition zone is often described as a circular area surrounding the antibiotic spot where colonies…

Q: When bacteria from a throat swab are streaked on blood agar, why is the agar stabbed several times…

A: The initial identification of the streptococcal and enterococcal species is based on their hemolytic…

Q: Imagine you made a single kirby bauer plate to determine if a given antibiotic were effective for…

A: Introduction Antibiotics, also called antibacterials, are drugs that kill or slow the growth of…

Q: No zone of inhibition was seen on the Blood Agar Plate with the Optochin Test. How should the…

A: zone of inhibition: This is an area of media where bacteria are unable to grow, due to presence of a…

Q: he main benefit of a three-dimensional culture system is that: O the morphology and behavior of…

A: In the realm of biological sciences, three-dimensional (3D) cell culture systems represent…

Q: Bacteria should grow on plates with media containing . ..... to perform blue/white screening   x…

A: Bacteria should grow on plates with media containing beta galtoside is required to perform…

Q: Imagine that you are Gram staining a mixed culture of both gram-positive and gram-negative bacteria.…

A: The bacteria cell envelope is a complex multilayered structure and based on this structure the…

Q: For an In vitro mimicking infection test:

A: Introduction: Cell culture is the process of growing cells in a controlled setting, usually outside…

Q: 1 trpt cells trp- cells + DNase 3 2 trp cells DNA 4 TSA plate 1 trpt cells trp- cells + DNA 3 2 trp…

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Q: You have a culture of bacteria and you performed an Acid Fast staining. You see red rod-shaped…

A: Introduction -  Acid-fast staining is a differential stainingused to differentiate acid fast and non…

Q: The below  photograph shows a Gram-stained slide viewed using a light microscope set at brightfield…

A: Gram's staining is a technique used to distinguish between Gram negative and Gram positive bacteria.…

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Q: one or your lab partners has followed the rrecommended procedure of running Gram-positive and Gram…

A: Gram staining is a common laboratory test to characterize the bacteria into gram-positive and…

Q: Samples from an ill patient were collected by a physician for testing. A bacterial infection is…

A: Infections are due to the entry of pathogenic microbes in the human body. They will colonize in many…

Q: which handwashing treatment produced the highest number of colonies on the after side compared to…

A: ANSWER) Handwashing is necessary technique used for the prevention of entry of microbes into the…

Q: Which of the following are true of the above picture? (Select all that apply.) V The bacteria are…

A: Gram-negative bacteria have a thin peptidoglycan layer which fails to retain colour after treatment…

Q: A patient sample will be analyzed. You are responsible to quantify the bacteria number. The dilution…

A: A sample of your blood, urine, skin, or any part of your body will be taken during a bacteria…

Microbial Growth

The development of microbial growth is influenced by various natural conditions (both physical and synthetic) like pH, temperature, saltiness, gas focus (O2, CO2, and H2), nutrients, water action, and assimilation. Knowing the distinctive physical and chemical factors that influence the development and endurance of microbial growth in the climate will assist with reinforcing endeavors outfitted towards their control. These lines lessen or diminish their harmful impacts on humankind, creatures, and the climate.