A culture starts with 8600 bacteria. After 1 hour the count is 10, 000. A. Find a function the models the number of bacteria after t hours B. Find the number of bacteria after 2 hours. C. After how many hours will the bacteria count double?

Q: a. What is the important of subculture in animal cell culture? And explain how do yo do subculture?…

A: Subculture:  A subculture is a new cell culture or a microbiological culture created by transferring…

Q: 7. Use the image to answer the following questions A student collects some of this bacteria to…

A: Answer 1:-  Based on the microbiological examination of the slide shown in the question, the petri…

Q: A subculture is a a. colony growing beneath the media surface b. culture made from a contaminant c.…

A: We make subculture from a plate where many different colonies of bacteria are growing.

Q: Assume that a pinhead is 1 mm in diameter. Howmany spherical bacteria (cocci), lined up side by…

A: spherical bacteria (cocci) are spherical bacteria as their body is round in shape, They may be…

Q: A student was observing a filament of blue green bacteria under low power (60X). The diameter of the…

A: A. Average length of one cell = 2.4 mm/ 40=0.06 mm Under 60X = 40 cells, each is 0.06 mm in length

Q: Would microbiology have developed more slowly if Fanny Hesse had not suggested the use of agar? Give…

A: Microbiology is the branch of biology that deals with study of organisms that are too small to be…

Q: The laboratory that you are working in does not have a microscope or motility medium. Now, how will…

A: The motility of a bacterium is determined by the presence and absence of flagella. The flagellum is…

Q: You perform a quadrant streak and isolate a single colony which contains two distinct species of…

A: Quadrant streaking is a technique for microbial inoculation in which a single colony is isolated on…

Q: A culture medium on which only Gram-positive organisms grow is called a(n):   Question 9 options:…

A: Culture media is referred to as a media composed of gel or liquid to grow microorganisms. Different…

Q: A microbiology student was given a mixed culture of two different gram positive bacteria species to…

A: In Microbiology, we grow bacteria on culture medium. Culture media contains specific mixture of…

Q: When culturing microorganisms, you must ensure you work to prevent unwanted contamination.  In doing…

A: Given: When culturing microorganisms, you must ensure you work to prevent unwanted contamination.…

Q: If a bacterial culture is started with 50 cells, what will be the cell number after four…

A: Cultured bacteria are any bacteria that grow in the lab by the microbiologist using the required or…

Q: A soil sample is placed in liquid and the number of bacteria in the sample determined in two ways:…

A: Direct microscopic count - In the direct microscopic count the slide is employed in such a way that…

Q: 1. Cell shape and arrangement in A? 2. Gram stain reaction in A? 3. Cell shape and arrangement in…

A: staining is the technique to view the bacterial cells in a smear of inoculum. Gram staining is the…

Q: ake a look at your streak plate from the use of a mix culture. Does your plate show the results that…

A: The streak plate method is a microbiological technique used for the isolation of pure strain ;…

Q: Which metric unit is most appropriate for expressing the size of bacterial cells? a). nanometer b).…

A: In science standards unit of measurement is metric. Some organisms can be seen by naked eyes. Their…

Q: One reason that a portion of the soil samples was sifted through an additional sieve was to: F…

A: Related to soil sample test to check for different purposes. like moisture content, air content, the…

Q: Animal cell culture makes use of low amounts of reagents

A: Animal cells are the basic unit of the tissues and organs of all organisms from the kingdom…

Q: In Microbiology, are there technologies that can help make Bacterial Culture and Sensitivity done…

A: Conventional methods for identification of bacteria and its drug susceptibility testing depends on…

Q: Describe how to make bacterial culture in different media. Explain different cultural techniques…

A: The predigested protein provides nutrition for the growth of bacteria. A culture medium must contain…

Q: a) What is Gram staining?     b) Describe step by step the procedure     c) Explain the basis of…

A: GRAM STAINING METHOD:- This is a differential staining that was developed by Dr. Hans Christian Gram…

Q: ) = 80e−0.05t + 8(t + 1)−0.5. Her model says that C(t) is the number of coliform group bacteria…

A: If considering the equation C(t) = 80e−0.05t + 8(t + 1)−0.5  Time is zero initially then  C =…

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: Name and explain the culture media that can be used for cultivating non-specific and specific…

A: a) nutrient agar & tryptic soy agar, & brain heart infusion agar are culture media that can…

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: You are incubating cells for 3 hours. The initial number of cells present in the sample were 102.…

A: Generation time is the time interval required for cells or a population to divide. Generation time…

Q: Industrial microbiology uses organisms to produce valuable products. In order to microorganisms to…

A: The large-scale production of industrial or commercial products utilizes the metabolic activities of…

Q: A pure culture is........... A. A culture of three to four different organisms B. A culture of one…

A: Culture in microbiology is spread of microorganisms in a medium of development . Per body tissue or…

Q: Why are some bacteria difficult to grow in the laboratory? Relate this to what you know so far about…

A: Microorganisms are isolated and cultured for various reasons. The role of media in the culture,…

Q: A fastidious organism must be grown on what type of medium? a. general-purpose medium c. synthetic…

A: The medium or the growth medium has essential nutrients for the growth of the microbes. There…

Q: lain how a wire loop and wire needle is used in microbiology laboratory.

A: A laboratory dedicated to the culturing, examination, and identification of microorganisms including…

Q: Why was knowledge of how to obtain a pure culture important for development of the science of…

A: A pure culture is one that contains only one species of an organism. The procedure of pure culture…

Q: Pretend you want to test whether a certain bacterium can take iron away from hemoglobin. What is the…

A: Culture media  Culture media is a type of media that support the growth of bacteria and fungi and…

Q: From the growth OD data alplot a growth curve graph with standard deviation bars blcalculate the…

A: Abstract Error bars commonly appear in figures in publications, but experimental biologists are…

Q: In a short paragraph explain the major difference between an enrichment culture and a selective…

A: A culture medium is used to culture the bacteria, yeast, and other plants (callus) substances. The…

Q: explain why the invention of solid culture media was of great importance to the development of…

A: Most microbiological tests rely on culture media to obtain pure cultures, grow and count microbes,…

Q: All of the following are valid measurements of growth except: A. Counting viable cells B.…

A: Use the general formula: [Number of colonies counted] × 10 × [how many times the sample must be…

Q: A mixed culture is a. the same as a contaminated culture b. one that has been adequately stirred c.…

A: The medium or the growth medium has essential nutrients for the growth of the microbes. There…

Q: You inoculate a culture into a test tube containing broth and take it out of the

A: Microbiological culture is a method of multiplying microorganisms in lab conditions on growth media.…

Q: Need help Which of these could be used to measure the number of live bacterial cells in a liquid…

A: Bacterial cultures are used to grow the bacteria in a specific environment. A bacterial culture…

Q: When Miescher added the alkaline solution, the cells lysed. What does this mean?   A. They…

A: Friedrich Miescher was a Swiss doctor who was conducting an experiment to study the chemical…

Q: Give 2 different reasons that scientists might need to isolate a pure culture.

A: Pure culture: a culture of microorganism (usually bacteria) that contain only single type of…

Q: Make a chart of all the organisms (Columns) with results    a. Blood Agar Plate b. PEA Agar Plate…

A: As another way of identifying the effects of temperature on the growth of different organisms,…

Q: Complete the table to contrast EMB Agar and MSA.

A: Media play a pivotal role in growth of Microorganisms.Media provide Nutrients to the organisms that…

Q: What is the name of the bacteria in the picture?

A: there are 2 types of bacteria they are categorised based on the cell shape, the coccus and the…

Q: In a serial dilution, you plate 1 ml of a 1/1000 dilution of a bacterial culture and find 25…

A: Serial dilution of the samples is used to calculate the number of microorganisms in a sample.…

Q: (a) if it is found that the number doubles in 6 hours, how many may be expected at the end of 18…

A: Bacteria are microscopic organisms not visible to the naked eye. These are omnipresent (they are…

Nutrient Growth Medium

It is a culture medium or nutrient broth for all kinds of microorganisms to grow properly and create their colony. This matrix provides support to increase the population of microbes through the method of cell proliferation. It is regarded as the food material for those organisms. It is a type of in vitro mechanism, in which the development of life is processed outside the host body. It can be solid, semi-solid, or liquid in nature. Different kinds of cells develop in different types of media.