Polyphenols (also sometimes termed ‘phenolics’)‚ are benzene rings which is a class of chemical compounds that consists of a hydroxyl (-OH) group‚ which is directly bonded to an aromatic hydrocarbon group. Phenolic compounds are widely produced industrially however; they are also produced by plants (mainly for protection against stress) and microorganisms where variations occur between different species. Polyphenols play vital roles in the growth of plants‚ especially in lignin and pigment biosynthesis
Premium Bacteria Chemistry Enzyme
The aseptically inoculate nutrient broth tubes A and B did not have any microbes inoculated into the tubes so it should not have been cloudy and that was what was seen. Tube C should have been cloudy because it had E. coli inoculated into the nutrient broth and that was also seen. A simple streak was also performed and it looks has if the loop went over previous streaks which should not have been done. A complex streak was also done. No colonies grew towards the end of the streak‚ this could be due
Premium Bacteria Microbiology Escherichia coli
Virus Outbreaks Everyone is always fearful when they hear about an infectious virus outbreak. For example‚ the Bubonic Plague and Ebola‚ created a frantic scare all around the world. The author‚ Richard Preston‚ depicts and describes the many different filovirus outbreaks that were exposed‚ taking over the human race throughout the entire book. The novel illustrates how the virus outbreaks had its outbursts‚ rapidly demolishing and destroying the human population gradually as there is no known cure
Premium Cholera Mononegavirales Epidemiology
Common Causes of Infection Transmission What is Infection? Microbes can lead to an infection only if they have capacity to multiple. Our bodies get infections from pathogenic microorganisms that cannot observe by naked eye such as • Bacteria. These one-cell organisms are accountable for diseases‚ such as urinary tract infections. • Viruses. Is an acellular agent smaller than bacteria consisting mainly of genetic material‚ that can be active in a close environments ranging from the common cold
Premium Bacteria Immune system Infection
Antibiotic Sensitivity lab A. Define the term selectively toxic. Why is it an important feature of antimicrobial agents? Selective toxicity is the ability of a chemical or drug to kill a microorganism without harming its host. Selective toxicity is important to microbial agents because it enables these agents to inhibit or kill a microorganism by interacting with microbial functions or structures different from those of the host thereby showing little or no effect to the host. B. What
Premium Bacteria Microbiology Antibiotic resistance
Gram Staining Gram Staining is a method of differentiating bacterial species into two large groups (Gram-positive and Gram-negative). Gram Staining is a way to separate one large group of bacteria into two. Crystal violet is used to dye the cells‚ which is the primary stain. Those that retain the color are grouped as Gram-positive‚ and those that do not retain the color are grouped as Gram-negative. Many of the Gram-negative bacteria are pathogenic‚ making this process useful for detecting infections
Premium Gram staining Bacteria Staining
Antibiotics are rapidly becoming useless and we are forced to deal with the problems of the post antibiotic era. Our current state is urgent to say the least‚ the entire CDC urgent threat list is filled with a wide range of multi-resistant bacteria. Clostridium difficile is the first on the list‚ it is gram-positive and erupts from the distribution of normal colon bacteria. The on set primarily starts by taking antibiotics‚ because Clostridium difficile is immune to nearly all antibiotics. Second
Premium Bacteria Antibiotic resistance Penicillin
The Results from the Gram positive tests indicated that the unknown #4 was Streptococcus pyogenes. All seven tests on the unknown matched S. pyogenes perfectly. The blood agar plate proved the unknown to be β hemolytic‚ meaning the unknown bacteria was capable of complete hemolysis. This test separated the unknown into the β Streptococcus group‚ narrowing the possible bacteria to S. aureus or S. pyogenes. The Catalase test was used to determine if the unknown could break down hydrogen peroxide
Premium Streptococcus Microbiology Growth medium
Pertussis is a disease caused by Bordetella pertussis is a gram-negative‚ aerobic‚ pathogenic‚ encapsulated coccobacillus of the genus Bordetella that produces endotoxins and exotoxins. This bacterial infection is found in the lower respiratory tract and is commonly referred to as Whooping Cough. Whooping cough is highly contagious. Classic symptoms include fever and cold like symptoms followed by paroxysmal coughing episodes that leave the infected person gasping for breath with a characteristic
Premium Bacteria Immune system Infectious disease
Main text. Questions. Page 3. 1. What does e.coli stand for? E.coli stands for Escherichia coli. 2. What are the symptoms associated with E.coli bacterial infection? The symptoms are diarrhea‚pain‚cramping‚nausea and vomiting. 3. give a detailed comparison of the levels of the e.coli bacteria over the five week period as given above. Page 4. 4. What could possible reasons
Premium Bacteria Infection Immune system