Describe the growth cycle of a bacterial population from the moment when it is inoculated into a culture medium. what are the differences observed in the growth pattern when measured by the total count and by the viable count?

Q: What is the significance of biofilm presence on medical equipment?

A: Biofilms are a collective aggregation of one or more types of the microbial population together…

Q: Suggest the composition of YEP medium to grow S. cerevisiae and explain   why these compositions are…

A: The most well-known yeast species in bread and sourdoughs is S. cerevisiae, moreover known as…

Q: A bacterium that can form endospores likely has the ability to; withstand high temperatures resist…

A: Bacteria is a prokaryotic cell with few micrometer in length and can exist in various shapes and…

Q: 5. How did you enrich for spore forming bacteria from the soil sample?

A: Introduction :- Bacillus (aerobic) and Clostridium (anaerobic) species are examples of spore-forming…

Q: A culture with approximately 3x104 cells/mL were incubated. After 3 hours, the number of cells had…

A: The number of generations (n) refers to the number of times a cell population got doubled during a…

Q: 8) Name the three basic shapes of the bacteria in the picture to the right. А B

A: Bacteria are classified as cocci, bacilli, spirilla, and vibrios based on their shape.  MreB is a…

Q: 6a. A sample is given to you that contains 6 million cells per ml.  You must make a series of serial…

A: A log dilution is a tenfold dilution, meaning the concentration is decreased by a multiple of ten.

Q: Which of the following best describe a gram positive streptocci: a. Round in shape in cluster,…

A: Gram positive bacteria are the bacteria that stain positive in the Gram Stain test. Gram positive…

Q: Describe the bacterial colonies providing information on shape, color, size, elevation and edge…

A: Nutrient Agar is used for the cultivation of bacteria and for the enumeration of organisms in water,…

Q: 1. What is host resistance in bacteria? 2. What is gram staining technique? 3. Difference between…

A: 1.    A bacteriophage is a virus that can infect a bacterium and can live inside a  bacterium as a…

Q: 9. Consider the photo below and identify the Gram characteristics as well as the shape/ arrangement…

A: Introduction:-  Gram staining is a technique of detection of bacterial cells using gram stains.Gram…

Q: use to stop the growth of mycoplasma.

A: Mycoplasms is a bacterial genus. It can be a saprophyte or parasite. They are the smallest bacteria.…

Q: 4. When is it terminal to take an antibacterial after acquiring the bacteria?

A: Antibacterial are low molecular agents that will inhibit the bacterial growth .Since antibiotics…

Q: How large can a bacterium be? How small? Why is itthat we likely know the lower limit more…

A: Bacteria are unicellular organisms that are typically within the micrometer size range as a result…

Q: Compare and contrast the four phases of growth in a bacterial growth curve.

A: Microbes or microorganisms are visible under the instrument named microscope. Various organisms like…

Q: 11. Environmental factors critical for microbial growth includes all of the following EXCEPT, Group…

A: Osmosis is the movement of solute from higher concentration to the solution with lower concentration…

Q: Describe the bacterial colonies providing information on shape, color, size, elevation and edge…

A: *morphology of Escherichia coli is identified as rough or a smooth form. *The trough  forms colonies…

Q: What factors can cause a lag phase in a bacterial growth curve?

A: The bacterial growth curve represents the number of live cells in a bacterial population over a…

Q: 13. The diagram below is Mass in grammes illustration of growth pattern; Time in days (a) i) Name…

A: The graph shows periods of exponential growth of bacterial population depicted by mass (in grams)…

Q: 1) Describe the growth morphology obtained from both Bacterial Growth Count (TSA) plates and Fungal…

A: Introduction :- The number of actively growing/dividing cells in a sample can be determined using a…

Q: When observing a streak plate of isolated bacteria as shown below, you see colonies outside the area…

A: A streak plate is a method used to isolate bacteria. The bacteria are streaked onto a plate and then…

Q: (2) Fundamentals of microbiol growth tinetics. Draw a typical microblal growth curve, and describe…

A: Growth is a process which can be defined as an unalterable increase in size of an individual cell or…

Q: 8. In a bacterial growth curve, bacteria are most sensitive to antimicrobial agents in ... A. lag…

A: Growth curve is the graph that is used to understand the changes in number of cells in an…

Q: 1.What colony characterisitics can be used for differentiation of bacterial species? As an example,…

A: Bacteria are prokaryotic microscopic organisms that have different characteristics. Their…

Q: 2 Gram positive pathogenic bacteria that may be classified as being facultative anaerobes?

A: Facultative anaerobes are bacteria that can grow in both the presence or absence of oxygen.In…

Q: How can I solve this equation?

A: Given, Every time the bacteria reproduce, the number doubles. Which means, it represents an…

Q: Suppose you do the Kirby-Bauer test on a hypothetical Staphylococcus species with penicillin and…

A: Antibiotic sensitivity test is a test that is used to evaluate , which Antibiotic is best and most…

Q: Some antibiotics show no zone of inhibition against the microbe. How is this possible? Explain how…

A: The zone of inhibition is basically the circular area around the spot of antibiotic in which the…

Q: Methods of reproduction of bacteria.

A: Bacteria are single celled microorganisms. These are prokaryotes which means they don't have a…

Q: Describe the steps and techniques from sampling to identification of a microorganism.

A: The purpose of microbiological sampling is to allow statements of density, types and locations of…

Q: What is A term referring to the changeable form of the bacteria? 2. What is the filamentous…

A: 1. A large group of microorganisms, many of which cause disease. germs, microbes,  microorganisms,…

Q: 23. On the basis of shape, identify the type of microbes.

A: *In bacteria, the cell wall is a rigid structure with thickness around the cell and it is…

Q: List and define the four phases of growth in a bacterial growth curve

A: the four phases of growth in a bacterial growth curve: There are four distinct phases of microbial…

Q: O C) Generally not required for well-established E. ull cultures O (D) Both A and B are correct O A…

A: Few important points to know about culture media of bacteria ,cell extract and SDS page: For culture…

Q: In what phase of the bacterial growth curve do cells die at rapid rates?

A: The bacterial growth is the complex process which involves anabolic and catabolic reactions which…

Q: 12. Why are major pharmaceutical companies reluctant to develop new antibiotics for Gram negative…

A: Antibiotic are microbial compound which is secreted by the other microorganism and effective against…

Q: 1. In what type of environments can a microorganism be found? a. Which environment has many…

A: Microbiology is the study of microorganisms that are invisible to the naked eye. The microorganisms…

Q: What are the cell parts a bacterium might have which may be needed for infection of the host? Cite…

A: Bacteria:  Bacteria are ubiquitous, mostly free-living organisms that frequently only have one…

Q: What other test must be done to confirm the presence of E. coli?

A: E. coli or Escherichia coli are Gram-negative, facultative anaerobic, type of a coliform bacterium…