Enzymes are globular proteins that are synthesized by the ribosomes in a cell. They act as catalysts during biological reactions; therefore‚ enzymes are able to speed up these reactions without undergoing a permanent change themselves. These proteins are able to do this by lowering the activation energy of a reaction. To add on‚ enzymes require specific conditions under which they can work best. Reactions occur at faster rates when the temperature is higher. However‚ the rate of an enzyme-catalyzed
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Chemotherapeutic Agents of Control: Introduction: Chemotherapeutic agents are chemical substances used to treat various forms of infectious diseases. The chemotherapeutic agent works by stopping the bacteria from reproducing. There are two different kinds of chemotherapeutic agents. The first kind is an antibiotic‚ which slow down the growth of microorganisms. The second kind of chemotherapeutic agent is synthetic drugs. Synthetic drugs are artificially made in a laboratory. Chemotherapy
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the throat that delays breathing and swallowing and can result in fatal heart and nerve damage by a bacterial toxin in blood. • Corynebacterium diphtheriae is the pathogenic bacterium that causes diphtheria. It is also known as the Klebs-Loffler bacillus‚ because it was discovered in 1884 by German bacteriologists‚ Edwin Klebs (1834 – 1912) and Friedrich Loffler (1852-1915). • 206‚000 cases of diphtheria were recorded in United States in 1921‚ resulting in 15‚520 deaths. There have been 2 cases of
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Microbial metabolism is the means by which a microbe obtains the energy and nutrients (e.g. carbon) it needs to live and reproduce. Microbes use many different types of metabolic strategies and species can often be differentiated from each other based on metabolic characteristics. The specific metabolic properties of a microbe are the major factors in determining that microbe’s ecological niche‚ and often allow for that microbe to be useful in industrial processes or responsible for biogeochemical
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technique not for the purpose of distinguishing one type of bacterium from another but make bacteria more visible in stained sections of lung tissue.[2] He published his method in 1884‚ and included in his short report the observation that the Typhus bacillus did not retain the stain.[3] Uses[edit] Gram staining is a bacteriological laboratory technique[4] used to differentiate bacterial species into two large groups
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Lab 5 –Cell Structure and Staining using Microscopy Instructions: Please download this MSWord document to your computer and answer the questions as asked. Then save the document and upload it to Bb using the Assignment feature provided. This assignment is worth a total of 100 points – there are 20 questions worth 5 points each. NAME Buket Rembert In Lab 3 you were introduced to microscopy. In this lab you will be adding to that experience by reviewing the differences in cell structure for Prokaryotes
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kingdom Protista b. have petidoglycan in their cell walls c. belong to the domain Bacteria d. are prokaryotic ___2. Identify the correct format for writing the genus and species of a given organism? a. bacillus Cereus b. Escherichia Coli c. bacillus coagulens d. Streptococcus epidermidis e. Micrococcus luteus ___3. The “magic bullet‚” capable of killing a particular disease causing microorganism‚ was first isolated when a. Louis Pasteur and Robert
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against the bacteria by measuring zone of inhibition. Inhibiting concentrations used for all the extracts was 500 mg/ml. Methanolic extract of C. album was found to be most active among all other extracts and inhibits Staphylococcus epidermidis‚ Bacillus subtilis‚ Staphylococcus aureus‚ Escherichia coli. The extract of a mixture of solvents was also found to be effective in inhibiting Staphylococcus aureus. Methanolic extract of C. album was found to give a most clear zone of inhibition. The antibacterial
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FOOD QUALITY Quality * Relates to excellent product or services that fulfills or exceeds our expectations Food Quality * Includes all attributes that influence product’s value to the consumers. This includes‚ Negative attributes (e.g.spoilage‚ contamination with filth‚ discoloration‚ off odors & flavors; Positive attributes (e.g. origin‚ color‚ flavor‚ texture and processing method used -Food Quality is a term which may refer to several things: ♣ the extent to which food contains
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Salmonella is a bacillus bacteria from the Enterobacteriaceae family which can be devided into two species which is Salmonella bongori and Salmonella enterica‚ and another six subspecies can be divided from the species of Salmonella enterica‚ which are enterica‚ salamae‚ arizonae‚ diarizonae‚ houtenae and indica. Salmonellae are found globally in all types on animals‚ and also in the environment. From an article researched‚ proposed by C. Wray and A. Wray‚ it is stated that one of the main habitat
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