Halophiles are organisms that require________. a. a salt concentration of at least 0.2 M b. high sugar concentration c. the addition of halogens d. all of the above

Q: Methanogens are classified as ____.   a. chemoautotrophs   b. photoautotrophs   c.…

A: Energy is required for the growth and survival of all living organisms. Bacteria are prokaryotic…

Q: An obligate anaerobe A   has the necessary enzymes to process toxic oxygen products B   does not…

A: An organism is a living thing that refers to prokaryotes (bacteria and archaea) and eukaryotes…

Q: The average time a molecule spends in its reservoir is known as ________. a. residence time b.…

A: The term reservoir refers to the water body that is known to store water. The example includes an…

Q: Chemoautotrophs can survive on ____________ alone.a. minerals b. CO2 c. minerals and CO2 d. methane

A: Chemoautotrophs are the organisms that acquire their energy by the oxidation of inorganic or organic…

Q: which of the following is best to sterilize heat-liable (sensitive) solutions? a, pasteurization…

A: From above question Option d (filtration) is correct.

Q: 1. Which of the following chemicals is a persistent organic pollutant (POP), but is produced…

A: Persistent organic pollutants (POP) are the toxic chemicals which persists for a longer period of…

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: 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: III. Microbes that can survive and thrive in extreme environments are known as extremophiles. In…

A: Extremophiles are organisms, typically microbes, that are capable of thriving and surviving in…

Q: A microbe that does not require oxygen for metabolism but will use it ifavailable is a/ana.…

A: Ans: The microorganisms are classified based on various criteria such as growth at specific…

Q: The term psychrophile? a. refers to an organism that has an optimum growth within the range of -5…

A: Bacteria  A unicellular prokaryotic microorganisms not visible to the naked eyes.

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: Some species of algae, bacteria and shrimp can live in the Great Salt Lake in Utah. Such organisms…

A: A few bacteria, algae & brine shrimp species live in the great salt lake in Utah. They are…

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 type(s) of organism/s does not produce enzymes needed to breakdown toxic forms of oxygen?…

A: Reactive oxygen species is a type of unstable compound that contains oxygen in them and these are…

Q: Agar is superior to gelatin as a solidifying agent because agar a. does not melt at room temperature…

A: Agar is used as a medium for culturing in laboratories.

Q: Bixa orellana (atsuete) is used in cooking as a natural food coloring. Which of the conditions will…

A: Introduction Bixa Orellana is a perennial, tall shrub, It is grown in many countries worldwide and…

Q: organism which take carbondioxide as a chemical source is known as Select one: a. photoautotrophs b.…

A: Introduction Carbon is a necessary component of all life on Earth. Carbon intake and outflow are a…

Q: A microbe that relies on nitrogenase for metabolism would benefit from living in a biofilm…

A: Nitrogenase may be a metabolic enzyme that certain bacteria use to repair atmospheric nitrogen into…

Q: Bacteria that require an environment with low oxygen and plenty of CO2 is termed. bacteria ......

A: Bacteria belong to prokaryotes. Bacteria lack membrane-bound cell organelles and membrane-bound…

Q: A microbe causing a bloodstream infection is likely all of the following except

A: Certain bacteria can lead to bloodstream infections causing septicemia. It may use an external route…

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…

Q: Food microbiology involves the following, except _______________ . a. fermentation b. western…

A: Introduction :- The study of microorganisms that colonise, alter, and process food as well as those…

Q: Heterotrophs that harvest energy from organic molecules are called   A. photoautotrophs   B.…

A: The oxidation of reduced inorganic molecules such as hydrogen, ammonia, nitrite, sulphide, hydrogen,…

Q: Chlorinating swimming pools is an example of______________ to control microbial populations. A.…

A: Disinfection of swimming pool means killing all the pathogenic microorganism species in the pool…

Q: These are enzymes that can sustain in a high hydrostatic pressure. * (Please choose one correct…

A: Bacteria are classified into different classes based on the influence of different environmental…

Q: 1. .... are organic proteins which can speed up the biochemical reaction that occurs mainly outside…

A: Water treatment is any process that improves the quality of water to make it appropriate for a…

Q: 4. Most human pathogens are ______ with regard to temperature range of tolerance for optimum growth.…

A: As per our guidelines, we are supposed to answer only one question. Kindly repost other questions as…

Q: Secondary metabolites of microbes are formed during thephase of growth.a. exponential b. stationary…

A: Bacteria grows asexually by binary fission which includes the synchronous growth, biphasic growth…

Q: Which of the following has been shown to cause corrosion in iron pipes? O A. extreme ferrophiles O…

A: Corrosion: Corrosion is the natural transformation of a refined metal into a more chemically stable…

Q: Potato Dextrose agar (PDA), used for the enumeration of molds and yeasts, is selective because it:…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: Superoxide ion is toxic to strict anaerobes because they lacka. catalase b. peroxidase c. dismutase…

A: A superoxide basically is a compound that do contain the superoxide ion, having  the chemical…

Q: Yeast + hydrogen peroxide observation a. feels warm to the touch b. feels cold to the touch c.…

A: The question is asking about the type of reaction that occurs when yeast is mixed with hydrogen…

Microbial Physiology

Microbial physiology is the branch of microbiology that is associated with studying the physiology of fungi, bacteria, and viruses. It is an important field of science concerning functional genomics and metabolic engineering.

Chemotaxis

The organism’s movement in a particular direction as a response to certain chemicals that are available in the environment is defined as chemotaxis. In brief, it can be defined as the occurrence of an organism’s movement in response to a certain chemical stimulus.