you observed the growth of Streptococcus pyogenes, Streptococcus pneumoniae and Staphylococcus epidermidis on the Horse Blood Agar (HBA) plates. The colonies and their surroundings looked like those in the image below. Based on the content of (HBA) plates and the specific properties of these three organisms, explain the particular appearance of the colonies on the plates. Name and describe the three subtypes of a process that occur on these plates. Streptococcus pyogenes Streptococcus pneumoniae Staphylococcus epidermidis

Q: When hydrogen peroxide is placed on a colony of an unknown bacterium, bubbles form. Based on this…

A: Correct option is, (d) Is catalase-positive.

Q: You have a mixed culture of 2 different bacterial species. One of the species is Gram negative…

A: Answer: Gram negative bacilli are those rod shaped bacteria which have thin peptidoglycan layer…

Q: Suppose you do this test on a hypothetical Staphylococcal species with the antibiotics penicillin…

A: Antibiotic It is an antibacterial chemical that is effective against bacteria. It aids in the…

Q: you grew streak plates of Clostridium sporogenes under both aerobic and anaerobic conditions. Which…

A: The experiment involves growing streak plates of Clostridium sporogenes under both aerobic and…

Q: You have a patient with a sore throat. You suspect Streptococcus pyogenes. S. pyogenes is a…

A: Streptococcus pyogenes are group A streptococcus, usually associated with mild and self-resolving…

Q: Why is an organism such as Staphylococcus adapted to growth on the human skin whereas the…

A: An organism is able to grow well in an environment which it find suitable in terms of pH and…

Q: While working with Mannitol Salt Agar you notice the growth of staphylococci however other…

A: Mannitol Salt Agar (MSA) is a media which has high concentration of salt solution. There are found…

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: (a) Escherichia coli, and (b) Staphylococcus epidermidis b-

A:

Q: Menaquinones is produced by Flavobacterium meningosepticum via submerged fermentation with 60%…

A: Menaquinone are commonly known as vitamin K2. The structure of compound indicates that the compound…

Q: biofilm-producing bacteria

A: Disclaimer: Kindly repost for other questions. As per the guidelines we are supposed to answer only…

Q: A bacterial organism is used to inoculate mannitol broth medium. Following incubation the broth is…

A: A nutrient growth medium is a type of solution or mixture that is designed to provide nutrients to…

Q: A patient is experiencing high fever and body aches from an infected skin wound. You suspect a…

A: As give in the question that Bacteria is gram positive :-

Q: If a bacterial species is not susceptible to an antibacterial drug at the concentration present in a…

A: Antibiotic susceptibility test is the test used to determine the effect of antibiotic to an…

Q: A common mechanism by which sensor cells in the host detect micro-organisms relies on the production…

A: The immune system of the body is involved in protecting the body against various pathogens. White…

Q: The autoclave uses a combination of ___ to accomplish its function: a) temperature and pressure b)…

A: a) temperature and pressureExplanation:An autoclave is a widely used device in various fields,…

Q: In this exercise, the action of bactericidins will be evaluated by __________. observing color…

A: Bacteriocins are small and cationic antimicrobial peptides, ribosomally synthesized by lactic acid…

Q: Two patients, with identical medical histories are in adjacent hospital beds. Each is infected with…

A: Answer The encapsulated bacteria in patient A were resistant to Phagocytosis.

Q: you looked under a microscope and found colony of perfectly round bacteria, all in a straight line.…

A: Streptococci and staphylococcus are both in special shape and are bacterias but the perfect round or…

Q: Is the Peptone Iron Agar (PIA) a complex or defined medium? Explain based on its composition. Is the…

A: Depending on their composition, media can be classified as defined and undefined media. Defined…

Q: ou are given a hypothetical bacterial culture, outline the steps that will enable you to determine…

A: The gram-positive bacteria have a thick peptidoglycan layer and the gram negative bacteria  have a…

Q: Hypothetically make the Dichotomous key for Micrococcus luteus, Bacillus subtilis, Bacillus,…

A: A dichotomous key is a tool that allows the user to determine the identity of organisms based on a…

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: Once these pathogens enter the host the difference in environmental conditions signals for them to…

A: Disease causing organisms are known as pathogens. Different types of pathogens have different modes…

Q: You have several different media onto which you inoculated eight strains of yeast (A-H). The media…

A: Minimal medium (unsupplemented) A minimal medium is a growth medium used for growing microbes and…

Q: organism (escherichia, staphylococcus, pseudomonas, bacillus) that will demonstrate greater…

A: UV Rays may cause mutations and their accumulation is the most fundamental requirement of a cell in…

Q: MacConkey agar is often used to differentiate E. coli from other Gram-negative rods. The recipe for…

A: MacConkey agar is a selective and differentiative medium that was developed by Alfred Theodore…

Q: Your animal cell culture laboratory suddenly suffered from a bacterial contamination. Several…

A: B. The media is probably contaminated with Mycoplasma, due to the lack of cell walls they are the…

Q: A patient comes to your office complaining of a productive cough, night sweats, and unexplained…

A: Tuberculosis is an infection primarily in the lungs caused by Mycobacterium spp. (mostly M.…

Q: Tom streak plated an Unknown bacterium on Monday. On Wednesday, her plate showed a continuous streak…

A: Streaking cultures on agar surface to get isolated colonies and to study the organisms, both known…

Q: is staphylococcus aureus cells under 40 times magnification bigger than onion cell or cheek cell?

A: Staphylococcus aureus is a Gram-positive, round-shaped bacterium that belongs to the Firmicutes and…

Q: based on the article What happens to the microbial environment as cheeses like Gouda, Cheddar, or…

A: Introduction  Microbiota, also known as gut flora or microbiome, refers to the community of…

Q: Is the Mueller-Hinton Agar (MHA) a complex or defined medium? Explain based on its composition. Is…

A: Mueller and Hinton in 1941 developed Mueller Hinton Agar(MHA). MHA is used for routine…

Q: You inoculate a species of bacteria on a MacConkey agar. It normally shows positive for growth and…

A: MacConkey Agar is a differential agar for Lactose fermentation while if no other Sugars are used,…

Q: After an antimicrobial drugs test, the following results were obtained from a disk-diffusion test…

A: The antibiotic disc diffusion test is usually performed on an agar plate. The agar plate contains a…

Q: Hypothetically make the Dichotomous key for Micrococcus luteus, Bacillus subtilis, Bacillus,…

A: A dichotomous key is a tool that allows the user to determine the identity of organisms based on a…

Q: The use of the autoclave ensures: a) the death of all bacteria b) the death of all bacterial spores…

A: An autoclave is a device that uses steam under pressure to sterilize equipment, materials, and…

Microbial Isolation

Isolation of the microorganisms in microbiology is the process of developing a pure culture by separating one species of microbe from a mixture of many other species. A pure culture is a culture that contains only one species of microbe.