..is the optimum condition for bacterial growth in soil? O Alkali O Acidic O Slightly acidic to neutral O Neutral to slightly alkaline

Q: The agar turns pink because the enzyme produces which causes a pH change to Ammonia, alkaline OA.…

A: Urease test is performed to check the  organism's ability to produce an enzyme known as exoenzyme.…

Q: murting Kitrate to nitrite itrogen yas 15. Denitrifying bacteria need which of the following…

A:

Q: ons are affected by certain factors. Which of the following is/are not affect to fixation. pH and…

A: Fixation is the preservative mechanism in which tissue is fixed to prevent protein degradation. It…

Q: Bacterial biofilm may link to

A: Answer: Biofilms are the complex structure composed by the various microbes such as bacteria , fungi…

Q: Measurement of Bacterial Growth @ 4°C Plot of Absorbance vs. Time (mins) -LB, pH 3.2 LB, pH 7.2 -LB,…

A: Bacterial growth occurs when a bacterium divides into two daughter cells, a process known as binary…

Q: Describe the basic process of biofilm formation.

A: Biofilm refers to the collective growth of microorganisms on different surfaces. The microorganisms…

Q: bacterium is grown in an environment with tryptophan added to the medium.  Describe how the bacteria…

A: Tryptopham  is an amino acid and is a necessary ingredient to  synthesise its protein. There are…

Q: List 5 physical methods of controlling microbial growth, and give an example of each. Why is moist…

A: Heat is one of the best and commonly used physical methods to control microbial growth. By heating…

Q: What are biofertilisers? A farmer is advised to add a culture of bacterium in the soil before sowing…

A: A fertilizer is a substance which is applied to soil or plant to increase the soil fertility or…

Q: Compared with their growth in the laboratory, bacteria innature generally growa) more slowly.b)…

A: MICROBIAL GROWTH MEDIA- It is the culture media that serves as a nutrient media for the growth of a…

Q: Microbial growth is measured by what parameter?(a) Increased cell size(b) Increased size of cellular…

A: The term microbial growth can be defined as the growth of the population or an increment in the…

Q: If lysozyme is added to a microbial culture. Predict what will be observed if the culture is…

A: Microorganisms are small organism that cannot be seen by naked eyes. They include bacteria, fungi,…

Q: E. coli, a facultative anaerobe, is grown for 24 hours on the same type of solid medium, but under…

A: The tiny organisms that cannot be observed with unaided eyes are the microorganisms. These organisms…

Q: An obligate halophile requires higha. pH b. temperature c. salt d. pressure

A: There are many kinds of microbes that live in a variety of environment like salt, under high…

Q: Lipopolysaccharide (LPS) is a major feature of which cell wall? O Fungal O Viral O Gram-positive…

A: Lipopolysaccharide are large molecules consisting of a lipid and a polysaccharide. They are found as…

Q: The number of bacteria in a culture increases rapidly. The table below gives the number N (t) of…

A: Given Values: Number of bacteria at a time (t=0) = 1000 Number of bacteria at a time (t=3.1 hours) =…

Q: setting up an experiment to support the hypothesis that "E. coli will grow best at a neutral pH"…

A: Microbiology is the study of microorganisms under the microscope. Microorganisms are bacteria,…

Q: You're in charge of bioremediation of jet fuel-contaminated soil. Your colleague advises that you…

A: Bioremediation is a field of biotechnology concerned with the removal of contaminants, poisons, and…

Q: MSA/mannitol salt agar plate is selective because: O it allows only gram positive bacteria to grow O…

A: Mannitol salt agar(MSA) It is a selective medium used for the isolation, enumeration and…

Q: Describe how genetic transfer can explain the growth of colonies on the middle plate.

A: A nutrient agar plate is a plate with the agar media having all the nutrients required for the…

Q: Match the descriptions to the terms. There are 4 descriptions to match. You can use a choice more…

A: Bacteria are microbes that are everywhere.

Q: What are the terms used for the conditions that influence bacterial growth on food? Explain each…

A: The conditions necessary for bacteria growth on food are often acronym together as FATTOM. It stands…

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: why do We need to Wait for the iron Agar to set and then Add another thin layer of 45°C Iron Agar?

A: The test that uses iron agar is the Triple Sugar Iron (TSI) Test and is used to determine the…

Q: Membrane filters

A: Membrane filter are made up of cellulose.

Q: When grown in a batch culture, a Bacillus sp. produces an antibiotic only during the stationary…

A: The microbial population exhibit different growth trends based on the type of medium in which they…

Q: Which of the following bacteria are most likely to be pathogenic? O Psychrophiles O Mesophiles O…

A: According to guidelines we have to answer the first question only. so please kindly post the…

Q: What would you expect to see if you cultured Gram-positive, lactose-fermenting bacteria on MacConkey…

A: Given: What would happen if you culture gram positive, lactose fermenting bacteria in MacConkey…

Q: Selective media: O Is regular nutrient agar that can grow any microorganism Selects for the growth…

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

Q: What incubation temperature is preferred for the growth of most medically important bacteria?…

A: Various bacteria have different incubation temperatures-hyperthermophile (60 degrees C and upwards)…

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: Media that prohibits the growth of some types of bacteria, but has no reaction to bacterial growth…

A: Introduction Microbiological media, often known as bacterial culture media, is a bacterial growth…

Q: A Food Microbiologist would like to determine all the possible effects of temperature and pH on…

A: Rate of growth refers to the The rate at which the number of organisms in a population grows. This…

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: Which of the following apply to silver as a chemical inhibitor of microbial growth? Acts as a…

A: Sterilization is the method of removal or killing or elimination of live cells from any surface.

Q: What is growth in "pure culture"? O Growth of human pathogens Growth of just one species in the lab…

A: A microbial culture is a method of multiplying microbial organisms by letting them reproduce in a…

Q: b. The growth rate of a certain species of bacteria is being modelled to determine the number of…

A: Controlled laboratory studies on the growth of microorganisms have resulted in invaluable…

Q: What type of microbes can not be effectively killed by low temperature (i.e. freezing) treatment?…

A: The organisms which can survive in extreme conditions are known as archaebacteria.

Q: (e) Bacteria strain that can only grow on minimal medium with threonine.

A: For the determination of specific mutations in bacteria strain they are cultured on minimal medium…

Q: :In bacterial culture media, agar is used as An additional nutrient .a Buffer .b A solidifying agent…

A: Agar is used in laboratory to help, feed and grow microorganisms. It is used in laboratory for…

Q: Some marine bacteria, such as Cytophaga species, live and grow well inside fish guts and in waters…

A: Cytophaga  is responsible for the cold water disease in trout and results in skin lesions and occurs…

Q: The generation time of microbacterium cells present in activated sludge is 30 minutes. If these…

A: Introduction: Cells are the most basic and basic unit of life. So, if we dissect an organism down to…

Q: Spores and toxin-producing microorganism produce toxins need higher Aw than minimum Aw for microbial…

A: Water activity (aw) is basically a term describing the availability of water to microorganisms. It…

Q: A sharp growth line in the SIM media is an indication of what characteristic?   A) Hydrogen sulfide…

A: SIM tests the ability of an organism to do several things: reduce sulfur, produce indole and swim…

Q: ar contains salt to prevent the growth of most microbes and mannitol plus a pH indicator to detect…

A: In order to produce and culture different types of microbial species, a culture media is required.…

Q: Bacterial growth a d. An iron-oxidizing bacterium growing at neutral pH needs to grow in low oxygen…

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

Q: What is the word used to describe microbes which have simple enzyme systems and which require growth…

A: fastidious

Q: The soil bacterium Azotobacter can be enriched from soil using liquid media, which must contain the…

A: Azotobacter are nonsymbiotic bacteria. They are capable of fixing nitrogen aerobically.

Modes of Nutrition

It is a biological process of providing or obtaining food that is necessary for growth and health. It includes many physiological processes - absorption, ingestion, assimilation, catabolism, excretion, etc. In biology, the science that deals with nutrition's physiological and chemical processes are called "nutritional science."