medium in which all the components are known is: A. Minimal medium B. Synthetic or defined medium C. Selective medium D. Complete medium E. Complex medium F. Differential medium G. General purpose medium

Q: Microorganism growth in complex natural environments such as soils and waters can be utilized to…

A: Introduction  A living item that must be seen under a microscope to be recognised as a microbe. Only…

Q: A cell suspension that is more turbid than another cell suspension (of the same cell type and media)…

A: Cell is the fundamental unit of life. It comprises of macronutrients such as carbohydrates,…

Q: Match the test with the appropriate reagent/ chemical  a. DNA test b. Paper chromatography  c.…

A: Genetic material is nothing but the sequence of nucleic acids which is called as DNA. It contains…

Q: If a food product has 10^9 bacteria, is heated at 50°C, and crosses the X-axis at 90 min (90 min is…

A: Answer is none of the above. Take 10 min to sterilize the food product.      For calculating it, we…

Q: Which of the following tools cannot facilitate the visualization of specific intracellular proteins…

A: Radio isotopes can visualise uptake and downtake but not specific intra cellular proteins. DNA…

Q: The stain used in the starch hydrolysis test: a.Does not stain the media surrounding positive…

A: The stain used in the starch hydrolysis is usually iodine. Starch hydrolysis test is used as an…

Q: Suppose you are checking the microbial quality of a raw material using agar culture media. After…

A: Unwanted microbial growth occurs when no proper care is taken while tranferring the culture on the…

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: In Gram staining technique, Decolorizing agent step should take Select one: O a. 60 seconds O b. 30…

A: Usually, Acetone is used as a decolorizer but some prefer ethanol and acetone in a 1:1 ratio.…

Q: Pulverizing dry ingredients into a fine powder is called Select one: O a. penetrating O b.…

A: Levigation is a technique that is generally used in pharmacy and in laboratories to grind or…

Q: Which one of the following is not true about PEA medium?   Select one:   a. Contains sodium…

A: PEA medium is a specialized agar used in microbiology to isolate and grow Gram-positive bacteria…

Q: The colonies growing on the surface of solid media represent: Select one: a. A group of different…

A: The CFU/ml are often calculated using the formula:cfu/ml = (no. of colonies x dilution factor) /…

Q: An acidophile would grow best at a pH of: A.6 b.2 c.12 d.7 e 9

A: The optimum pH is the pH at which the enzyme works efficiently. Because the enzymes are found more…

Q: 64 65 calx A pure culture contains only A. one species of microorganism. B. bacteria. C. a variety…

A: Culture:- it is a method of multiplying the microbes as well as eukaryotic cells in a appropriate…

Q: A cell is 25 μm wide when viewed at 1,000× magnification. Thismeasurement can also be written…

A: 1,000× magnification means that to the naked eye, the image would appear 1000 times larger than it…

Q: Which of the following is not used as an antiseptic?   A. Chlorhexidine B. Phenol C. Iodophor…

A: Antiseptics are the molecules or substances which has the ability to slow down or stop the growth of…

Q: 1) The use of natural products in classification is called

A: Trees, fungi, animals, and microorganisms generate natural products, which are chemical substances…

Q: micro-organisms are the most resistant to heat sterilization?

A: Most of the bacteria cannot survive adverse heat condition. But somehow particular bacteria can…

Q: Many antibacterial hand soaps contain the chemical agent _____ , which belongs to the _____…

A: Sodium hypochlorite is commonly used chemical agent in mildew remover for prevention of infection…

Q: The culture medium that contains penicillin is a type of ________media.

A: Culture media were introduced in the 19th century and have since gone on to revolutionize…

Q: What type of media is used to encourage the growth of only the suspected pathogen from nonsterile…

A: The growth media or culture media is used to grow microorganisms in the laboratory conditions.…

Q: in 5 hours, your bacterial culture went from a concentration of ~105 CFU/mL to ~1.6 x 106 CFU/mL,…

A: n=1.6x106 CFU/ml N=(no of cells at the beginning )=105 CFU/ml n=Nx2x x=no. of generation…

Q: Prototrophs A. Can grow on complete media and minimal media B. Can grow on complete media but not…

A: Introduction Prototrops are the kind of microorganism that has the same nutritional requirements as…

Q: Would heating the culture in a sealed, small-diameter tube that is totally immersed in a water bath…

A: Microbial culture is a process of multiplication of microbial organisms by allowing them to…

Q: According to the Liebig's Law of Minimum, which condition of certain growth factor limits growth of…

A: you have asked many questions and according to our instructions we are allowed to answer only three.…

Q: Lysine decarboxylase media is yellow after incubating an organism in it at 37 degrees for 24 hours.…

A: Lysine decarboxylase is an enzyme that is used in decarboxylation test. It is used to distinguish…

Q: Which of the following molecules have been used as a biomarker in studies in microbial ecology? a…

A: All these molecules have been used as biomarkers in microbial ecology. Sterols, d- alanine and…

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: A growth medium consisting of only known amounts of water, magnesium, calcium chloride, potassium…

A: The growth medium, also called as Nutrient Broth, is a kind of solution which is sterilized to get a…

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

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

Q: You are testing a potential new antibiotic for its effectiveness at killing Streptococcus…

A: Drugs are medications that are taken in the prescribed amounts under the supervision of doctors to…

Q: The stain used in the starch hydrolysis test: a.Is the same stain used in the capsule stain…

A: The stain used in the hydrolysis test is iodine.

Q: The use of sodium chlorite to inhibit the growth of Shigella in drinking water refers to ? O A.…

A: The use of sodium chlorite to inhibit the growth of Shigella in drinking water refers to…

Q: Which of the following medium is considered an enriched medium? a. LB b. T-soy  c. Nutrient  d.…

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

Q: The graph shows the number of microbial cells (log scale) against time in a liquid culture. In which…

A: Bacterial growth is divided into four stages. During the lag phase, the bacterium prepares itself by…

Q: the purpose of a mordant in Gram stain is    a. to prevent the crystal violet from leaving the cell…

A: A mordant or color fixative is defined as a substance used to set (for example tie) colors on…

Q: Compare and contrast liquid, solid, and semisolid media, givingexamples.

A: liquid media happens to contain all the growth requirements and ingredients suspend in water without…

Q: What are the 2 ways of production that will allow a product to be classified as an essential oil?:…

A: BASIC INFORMATION ESSENTIAL OILS  These liquid is basically hydrophobic and concentrated in nature.…

Q: Write a conclusion: Discuss the possible cause (s) for food dyes to spread to form distinct areas…

A: Diffusion is a process of movement of substance from higher concentration to lower concentration.…

Q: You pipette 1mL from a 30mL starting culture into a 99mL blank labeled A. You plate 1mL and 0.1mL of…

A: This question spins around the concept of serial dilution and colony-forming units (CFU)…

Q: You have a mixed culture containing 4 different organisms that you ihocl plate of media. When you…

A: Media or culture medium is a liquid or gel that is specifically designed to support the growth 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: All of the following are cofactors of SOD (superoxide dismutase) EXCEPT? A. Zinc B. Maganese C.…

A: Introduction The enzyme superoxide dismutase catalyses the dismutation (or partitioning) of the…

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.