With liquid media such as broth, is it possible to determine if the culture is pure using the naked eye only? no yes sometimes

Q: What is the BEST glassware that could be used to hold the agar powder while weighing? After 24…

A: As per our guidelines, we are allowed to answer only one question. Kindly upload the rest of the…

Q: As the temperature of pasteurization increases, the time of treatment decreases. True False

A: Pasteurization is a technique by which some of the liquid foods such as milk, fruit juice etc is…

Q: One ml of a water sample was placed in a Petri dish with melted agar. After incubation, 129 colonies…

A: A colony-forming unit, or CFU, is a measurement of the concentration of microorganisms in a test…

Q: A swab for culture is received from a doctor's  office. The staff forgot to mention the source from…

A: Introduction Microbiology is the branch of science that deals with the study of different types of…

Q: A culture initially has P0 number of bacteria. At t = 1 hour the number of bacteria is measured to…

A: A first order initial value problem is a system of equations of the type  F(t,y,y’)=0 ,  y(t0)=y0 .…

Q: Why is staining a specimen helpful for microbiologists? This is only done for laboratory decoration,…

A: Why is staining a specimen helpful for microbiologist?

Q: After proper incubation, you obtain your Mannitol Salt agar (MSA) plate and your MacConkey (MAC)…

A: MacConkey Agar is a selective and differential medium while MSA is a selective media and both are…

Q: You will only isolate pure colony to inoculate again (sub-culturing) to newly prepared plate medium,…

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

Q: You make a 1:100 dilution of your culture and plated 0.1 ml of this sample on a Nutrient agar plate.…

A: The amount of organisms present in the original culture is called as colony forming unit per…

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

A: Bacteria require appropriate environmental conditions for its growth. Solid or a liquid preparation…

Q: A bioreactor which is used for the production of growth factor A is operated as fed- batch culture.…

A: A Bioreactor is a device or a process system which supports and habitats the biologically active…

Q: For a successful direct staining, one should A. use a minimal amount of water to speed up the…

A: Direct staining is the process to make slides using a single stain or dye.

Q: Gram stain of Nodule Suspension Describe the morphology of the crushed nodules under microscopes…

A: The bacteria are stained with the gram stain and can be divided into two groups on the basis of the…

Q: The isolate you obtained appears to be very unique. Another laboratory has requested a sample of the…

A: A diverse group of microorganisms occurs in nature, their nature and functional properties can be…

Q: Can culture media be placed in a freezer? Why or why not

A: Culture media are also called as growth media. They are mixture of nutrients and other substances…

Q: Bacteria are not used as probiotic agents. True O False The growth of bacteria that form endospores…

A: Bacteria are prokaryotic microorganisms. Bacteria are ubiquitous in nature and are found almost in…

Q: TRUE or FALSE only! 1. Pure cultures contain only a single species and no other organisms. 2. Pour…

A: 1. True 2. True

Q: How do you sterilize the following? petri dish inoculating loop culture media test tube…

A: Sterilization of following- petri dish - By using autoclave or by a series of steps that includes…

Q: Put the numbers in the space provided to indicate the order of Capsule Staining. If the statement is…

A: The primary function of capsule staining is to differentiate capsular material from bacterial cells.…

Q: Which of the following is NOT a chemically definable component in culture media? a.Sheep's blood…

A: A chemically defined media is a culture medium for microorganisms or animal cells (even human cells)…

Q: Motility is best observed with a a. hanging drop preparation c. streak plate b. negative stain d.…

A: Motility is the ability of bacterial cells to migrate from one location to another. The flagella…

Q: drying at critical point It is used in scanning electron microscopy O true false

A: Introduction: The critical point drying approach is an effective way to dry sensitive materials for…

Q: A microbiologist has isolated a new strain of bacteria, and is trying to characterize aspects of its…

A: Psychrophilic bacteria are cold loving bacteria that grows and reproduce at lower temperatures…

Q: Could you spread plate in the usual Petri dish a 10mL inoculum?

A: The spread plate method is a technique to plate a liquid sample containing bacteria so that bacteria…

Q: A bacterial sample collected from a patient is processed using a Gram's stain. After staining, the…

A: Gram stain is a test that looks for bacteria in areas where an infection is suspected, such as the…

Q: Which of the following is the proper technique for inoculating an agar slant with a broth culture?…

A: If we want to grow microbes under lab conditions , we need to provide the necessary nutrients and…

Q: Which of the following is not meant to reduce contamination of yoru sample? avoiding hand contact…

A: A microbial culture is done to multiply the specific strains of the microorganisms under specific…

Q: typical labeled sketch of a bacterial growth curve in batch culture

A: Batch culture is a laboratory culture method in which bacteria has grown in large scale.  Here…

Q: The difference in the colony appearance of bacteria cells growing on mannitol salt agar is detected…

A: Mannitol salt agar is a selective culture media that is used for the isolation of the pathogenic…

Q: Bacterial cells can form colonies on the following media EXCEPT: Select one: Nutrient broth Agar…

A: The nutrient broth is the liquid nutrient media that lacks the solidifying agent. It is used for…

Q: C MSA (Mannitol Salt Agar) Match the description to the correct Bacterium A= growth, agar is yellow…

A: Microbiology is the branch of science that deals with the study of microorganisms that are too small…

Q: To prepare nutrient agar medium, you have to pour approximately. mL of medium into the Petri plat a.…

A: A patri dish is a normal in which is used for the growth of bacteria and other microorganisms. it is…

Q: suffering severely due to alkaloid production a

A: Plants have an important source of life-saving medications where it is used in two ways such as…

Q: ow can one be sure that the culture media are sterile or free from contamination

A: Sterility, often known as sterility, is the state of being free of all contaminants and…

Q: Which of the polysaccharides WILL DECREASE GELLING if acid is added to the sample?     pectins…

A: Gels are solid, jelly-like structures made of colloid polysaccharides, proteins, and polymers…

Q: Why might gram positive bacteria incorrectly appear to be gram negative after the gram staining…

A: Gram staining is a procedure which is used to identify whether the bacteria being tested in gram…

Q: Technique used to inoculate plate media using inoculating loop. Technique used to inoculate agar…

A: # Here I am giving solution of first two questions . Please repost your third question and better to…

Q: Colony formation can be observed in liquid media.  a) Trueb) False

A: The culture medium or growth medium is the specific medium, which contains all essential nutrients,…

Q: What type of medium is best used to maintain a preserve specimen before clinical analysis? A.…

A: A growth or culture medium is solid, liquid or semi solid in nature that is used to support the…

Q: a. STREAK PLATE METHOD: a. Pour melted NA or CWA, following aseptic technique in a petri dish and…

A: The reason for the streak plate is to acquire separated colonies from an inoculum by making areas of…

Q: Which of the following are true regarding UV disinfection? Mark all that apply. Water must be clear,…

A: Electromagnetic spectrum is the large range of light rays containing x rays, gamma rays, visible…

Q: Apple Slice dipped into different solution

A: apple slice dipped in water should have some brownig , but not as much as the control . beacuse…

Q: Why should your solvent be evaporated from the sample placed on the sterile disk before you place it…

A: The antimicrobial activity of natural compounds like essential oils derived from plants can tested…

Q: sabuoraud slope culture contains a black mould. describe a diagnostic method you can use to identify…

A: Introduction:-  SDA is essentially utilized for the particular development of yeasts, molds and…

Q: at is the wavelength of maximum aborbance for the Bradford reagent in its blue form. at is the…

A: Bradford reagent in Bradford assay is used to to assess the amount of protein in a sample. The…

Q: During the preparation of a smear leading into simple staining of the bacterial culture S.…

A: S. epidermidis is a gram-positive bacteria.

Q: You are given a culture medium on which only Gram negative bacteria will grow. Organisms that are…

A: The medium in which only gram negative bacteria will grow prevents gram positive bacteria to grow in…

Q: Dilute cells from an old culture 1:50 into 200 mL cultures. What volume of the old culture would you…

A: Culture consists of appropriate substances which provides the growth to the desired organisms.