What is [are] good reason[s] for plating a mixture of bacteria so as to form colonies? Select all that apply. Group of answer choices Count the number of dead and live bacteria in the mixture Count the number of bacteria in the mixture that can grow on the plate Get lots of copies of all the cells in the mixture

Q: Which correctly characterizes the difference between gram+ and gram- bacteria? Group of answer…

A: The gram+ and gram - are the two types of bacteria that are differentiated based on the gram…

Q: You want to produce a biological agent to kill bacteria that cause disease. Which organism you will…

A: Antibiotics are drugs that help the host's defense mechanism combat infection by preventing…

Q: Does each colony represent a pure colony? How will you prove your answer? Explain why an isolated…

A: A "colony" is a collection of bacteria, fungus, and other microbes cultivated on a solid agar media…

Q: diluted a bacterial culture a million-fold. you then plated out 0.1 mL of dilution and after…

A: The growth in a body-temperature incubator of micro-organisms on a medium of culture, like agar, for…

Q: , the most suitable description for the origin of each colony formed on the surface of a solid…

A: Origin of colony in solid medium.

Q: student is directed to make a simple stain of coli with crystal violet, but got mixed up and used…

A: Bacteria cell walls are stained by the crystal violet. Iodine is subsequently added as a mordant to…

Q: A researcher discovers a new species of bacteria in the Sahara Desert. The researcher is concerned…

A: Bacteria are single-celled microorganisms.

Q: You measure your E. coli and find them to have an OD600 of 1.20. You have 50 ml of culture, and you…

A: The growth curve of a bacterial culture can be assessed by measuring its optical density at 600 nm…

Q: The goal of Disc diffusion test is   Select one: to determine the suitable concentration of an…

A: Antibiotics, such as penicillins and cephalosporins, are a form of antimicrobial drugs that fight…

Q: Frederick Griffith conducted an experiment using 2 different strains of the bacterium Streptococcus…

A: Frederick Griffith performed an experiment using two different Strains of bacteria. The S strain was…

Q: What are the basic differences between the three plating methods? Fill up the following table.…

A: These are the aseptic methods used in laboratories for the growth of micro organisms.

Q: Why may some bacteria use extracellular enzymes to form blood clots? View Available Hint(s) for Part…

A: Option B. Blood clot can hide bacteria from the immune system

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: 1 mL of a juice sample is taken and diluted in 9 mL culture medium, subsequently, this suspension is…

A: Petroff- Hausser chamber is a chamber used usually for sperm and bacterial count. Number of bacteria…

Q: Vernon wanted to determine the colony forming units of bacteria per gram of soil in their school…

A: CFU (colony-forming unit) or cfu (colony-forming unit) is a metric for the number of viable…

Q: Dilute cells from an old culture 1:200 into 5 mL of fresh media. What volume of the old culture…

A: Introduction Dilution is the process of lowering the concentration of a solute in a solution by…

Q: You decide to sample the bacteria growing on several items in a laboratory space. You follow aseptic…

A: By using an aseptic technique such as using applicator swabs dipped in a sterile broth solution to…

Q: Which of the following is false about a colony? O A colony is a population of cells formed from a…

A: The correct answer is E . A Colony is mixture of different bacterial cells  Bacterial colony is a…

Q: You a clinical lab worker. Your boss hands you a sample and asks you to identify the genus of…

A: Bacteria are unicellular microorganisms. Bacteria can be found in various habitats which includes…

Q: You dilute the suspension to 10-4 and plate 100ul onto an agar plate.  After overnight incubation…

A: Culture refers to the technique by which micro-organisms are grown in the specific medium rich in…

Q: In the experiment by Bernard Davis, bacterial F+cells and F- cells were growing while separated by a…

A: The transfer of genetic material between bacteria can occur in three different ways, Conjugation,…

Q: Before viewing a specimen of pigmented bacteria on a slide under the light microscope, which of the…

A: The wet mount is the most basic method of preparation, in which the specimen is placed on the slide…

Q: Why is the top part of a broth or slant culture heated in a flame immediately after removing the…

A: The correct option is d. The top part of a broth or slant culture heated in a flame immediately…

Q: You plated 1.0 mL of a sample diluted by a factor of 10^-5 and you counted 50 comonies after…

A: The stock concentration of the bacteria can be determined by counting the colonies formed on the…

Q: Most bacteria require a water activity of 0.9 or higher to grow. A prolonged period of being dry…

A: The amount of 'accessible' water in a food is measured by its water activity, which is typically…

Q: Citing the data from your results table tell which antibiotic is the most effective against this…

A: Antibiotic Sensitivity Test is a test used to evaluate to efficacy of particular antibiotic in…

Q: Two part question I have separated for clarity) Which stains are used to differentiate between the…

A:

Q: Streaking One drop of bacterial solution contains millions of cells. To identify a species,…

A: The purpose of streaking for isolation is to produce isolated colonies of an organism on an agar…

Q: In the Griffith experiment, why didn't the bacteria from rough colonies harm the mice? Because they…

A: Bacteria like Streptococcus do not have membrane-bounded organelles, can reproduce individually,…

Q: After a sufficient incubation period, bacterial growth occurred except in the zones of inhibition…

A: Antibiotics can be defined as a chemical compound ; generally releases by the microorganisms ; that…

Q: How does the streak plate technique help in isolating individual colonies of bacteria? Why streak…

A: NOTE: DUE TO MULTIPLE QUESTION POSTED, AS PER OUR GUIDELINES WE ARE ONLY SUPPOSED TO ANSWER THE…

Q: A stock solution of a bacterial strain is diluted 1/10000 to a total volume of 500ul. Then, 50ul of…

A: The mixing of the stock solution with the dilutant liquid is known as dilution. The ratio of stock…

Q: Examine the image below. The bacteria in this image have been treated with gram straining procedure.…

A: Gram staining a differential staining procedure which stains the gram positive cells with primary…

Q: You have a culture of bacteria with an unknown number of bacteria in it. You have at your disposal…

A: Dilutions of microbial cultures or clinical and environmental samples are regularly needed in the…

Q: Bacteria in the phylum Firmicutes are distinguished from the phylum Actinobacteria on the basis of…

A: A microbe is a living entity that is so tiny that it cannot be seen with the naked eye. Microbiology…

Q: What is the shape of the bacteria in the pictures under microscope ( Cocci or Bacilli ) and why with…

A: Bacilli and cocci are different shaped bacteria and they named according to their shape . The…

Q: Contrast the overall cell wall compositions of Gram positive and Gram negative bacteria, and go…

A: The bacteria are classified according to their cell wall composition into Gram positive and Gram…

Q: The first step in identifying an unknown bacterium is to __________. culture your unknown on…

A: Bacteria are the minute microorganisms that are unicellular and have a cellular level of…

Q: If there are bacterial clumps visible in a drop of water on a glass slide, will this affect the…

A: Bacterial staining is a very important process to visualize the bacterial cell morphology. If there…

Q: In lab, we used the Gram stain to differentiate between Gram-positive and Gram-negative bacteria.…

A: The Gram staining technique was first introduced by Hans Christian Gram in 1882. It is one of the…

Q: You contract an infection from an unknown pathogenic organism. Your doctor conducts a biochemical…

A: Given:  The person contracts an infection from an unknown pathogenic organism. The doctor conducts a…

Q: r analysis. After 24 hours, your pour-plate reveals the presence of Proteus-looking colonies. What…

A: Proteus is an anaerobic, gram-negative bacterium belonging to the Enterobacteriaceae family. It is…

Q: You and a partner conduct the acid-fast staining using the same two bacteria. You know that there…

A: Acid-fast staining is a technique of differential staining that demonstrates to be an important…

Q: Use the following diagram to answers the questions. A. Is this cell Gram + or Gram -? Provide 2…

A: Bacteria are a broad collection of tiny, unicellular creatures that have been classed as prokaryotic…

Q: A student is directed to make a simple stain of coli with crystal violet, but got mixed up and used…

A: Bacteria are microscopic organisms which belong to prokaryote because these are unicellular…

Q: You are testing ground beef to determine how many bacteria are present per gram of meat. You place 1…

A: Given: Number of colonies = 122 The volume of sample plated in ml = 0.1 ml Dilution = 10-3 Dilution…

Q: A bacterial suspension with a population of 6.3 x 107cells/mL was diluted as follows: 4 mL was…

A: In serial dilutions, there is a need to multiply the dilution factors in each step.The dilution…

Q: You are studying a type of bacteria isolated from the acidic water runoff of a mining operation. You…

A: INTRODUCTION In chemistry, pH traditionally denoting "ability of hydrogen" is a scale used to…

Q: Why is bacterial culture useful to grow bacteria?

A:

Q: Bacteria growth and multiplication play a role in infectious diseases : Bacteria can increase in…

A: According to the question given above, we have to find out the growth curve effect on the generation…