Describe how a solution of lactose would react toward these reagents. a. Benedict's b. Barfoed's

Q: Why is Phenol red being utilized in MacConkey agar? Choose among the choices and further explain it.…

A: Introduction  MacConkey agar is a selective and differential culture medium used in microbiology for…

Q: what does it mean if a bacteria tested positive for indole

A: Like several biochemical bacterial experiments, the results of the indole test are indicated by a…

Q: Explain how the color change occurs with the biuret reagent in the presence of proteins

A: Protein is a polypeptide chain of amino acid, Biuret test is a kind of biochemical test, used to…

Q: What type of error will occur if starch is added too early in the Winkler analysis? A. Positive…

A: Starch is a type of carbohydrate found in many foods, including grains, potatoes, corn and rice. It…

Q: It is known that 80% of Penicillin is protein bound. Explain how most of it is being cleared from…

A: Penicillin is an antibiotic and a beta lactam drug. Penicillin upon administration into humans , go…

Q: Suppose a positive Barfoed's test was obtained with sucrose solution suggest and 1-3 sentence…

A: Sucrose is a disaccharide. It is formed from the dehydration reaction of glucose and fructose…

Q: The Urease Test is a good identification tool to determine if a microorganism contains urease. The…

A: Urea is a nitrogen-containing compound that is produced during decarboxylation of the amino acid…

Q: Explain the purpose of thiosulfate in the medium.

A: Culture media is used to enrich the number of bacterial growth, to select certain bacteria and…

Q: Describe the kind of food that would have lactic acid bacteria. Mention their useful applications.

A: Lactic acid bacteria are widespread in any environment that is rich  in carbohydrates, such as…

Q: Suppose a positive Barfoed's test was obtained with sucrose solution suggest and 2-3 sentence…

A: Sucrose is a disaccharide. It is formed from the dehydration reaction of glucose and fructose…

Q: Does Escherichia coli provide positive or negative results for the lysine decarboxylase and…

A: Ornithine decarboxylase test detects whether bacteria uses ornithine amino acid for carbon source…

Q: State the raw materials for the preparation of sufu ( soybean curd

A: soy curd is healthy and a very good source of protein, B vitamins and minerals.

Q: Explain why TSIA is a suitable medium for identifying enteric bacteria. To do this you will have to…

A: Enteric bacteria are those bacteria which are present in intestines and can be either gut flora or…

Q: What would be the expected out come of a starch test If the bacteria is a pathogenic intestinal…

A: Introduction: Starch test is shown by the gram positive bacteria. This test is used to identify the…

Q: what does it mean if a bacteria tested negative for citrate

A: Citrate Utilisation Test It is used to determine the ability of an organism to utilize citrate as a…

Q: Explain the function of the ferrous ammonium sulfate in SIM agar.

A: SIM agar test is used for the differentiation of gram-negative enteric bacilli based on their…

Q: Design an experiment to isolate microorganisms able to degrade starch. Explain step wise

A: Starch is a polysaccharide present abundantly in plants and generally deposited in granule form in…

Q: Clostridium tetani is a common soil bacterium and causes tetanus. Would you expect C. tetani to…

A: Clostridium tetani, a Gram-positive rod that forms a terminal spore is commonly found in the soil,…

Q: Which are considered exoenzymes? Choose all that apply.

A: Answer: EXOENZYMES : These are the extracellular enzymes which are secretes by the cells and acts…

Q: For which of the five hydrolysis tests (starch, casein, triglycerides, tryptophan, and urea) would a…

A: Propionibacterium acnes is a Gram-positive, rod-shaped bacterium. It is an aerotolerant anaerobic…

Q: Erysipelothrix rhusiopathiae is a gram positive bacilli that survives in water contaminated by a…

A: Erysipelothrix rhusiopathiae is a gram-positive, rod-shaped, nonmotile, bacillus bacteria.

Q: In which food would you find lactic acid bacteria? Mention some of their useful applications.

A: Microorganisms are the major components of biological system on earth. They are present everywhere,…

Q: Fill up the table below. For inferences, indicate the identity of the macronutrient being tested in…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Explain why phenol red is used in McConkey agar to detect the acid reaction of lactose fermentation.

A: Introduction  McConkey agar is a selective and differential medium used for the isolation and…

Q: A newly discovered microorganism has been studied and is being called a chemolithoautotroph. Dissect…

A: "Chemo" refers to chemicals and "litho" refers to rock or inorganic compounds. Therefore…

Q: Describe flavonoids in terms of structure and function that distinguish them from the other

A: Secondary metabolites are organic chemicals produced by bacteria, fungi, or plants that are not…

Q: Compare and contrast Benedict's Tests for identifying reducing sugars and non-reducing sugars. What…

A: Carbohydrate is a macromolecules which is formed of carbon , hydrogen as well as oxygen . It is…

Q: Explain what is Barfoed's Test.

A: Introduction  The simplest carbohydrates are monosaccharides because they cannot be digested into…

Q: Give one medical application of the α-naphthol.

A: Introduction: The first carbon atom of 1-naphthol, also known as alpha naphthol, has a functional…

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: Why Cepacol is used ?

A: Cepacol is a drug which relieves pain associated with a sore throat or mouth. It can be administered…

Q: For the free fatty acid samples, lipase had been added to corn oil and samples taken over time as…

A: Lipids are organic molecules that are soluble in organic solvents such as ether and chloroform but…

Q: What test could be used to differentiate the following pairs: Explain Suc & lac

A: Hi! Thank you for the questions. As you have posted multiple questions, I will be answering the…

Q: Which of the following results from TSI test is FALSE?  A. Yellow slant, yellow butt, split agar…

A: Ans- Red butt, red slant means all sugars fermented, no gas produced (False).

Q: Which test is used to differentiate between fermentative and oxidative metabolism? Describe the…

A: before we can go for the specific test required, let's first understand the difference between…