to stimuli‚ and plasma membranes. One significant difference is that prokaryotes are without a cell nucleus and eukaryotes are cells with a membrane bound nucleus Prokaryotic falls in two taxa characteristic of organism: domain archaea and domain bacteria; however prokaryotic itself is not a taxon. Prokaryotes does not have a membrane surrounding its genetic material (DNA) they make proteins simultaneously to read their genetic code. Eukaryotes have a membrane called a nuclear envelope surrounding
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AUREUS BACTERIA Partial Fulfillment Submitted to: Shayne Joie Pabustan Jennylyn Mabelle Abalayan Cinderella Genes Ana Marie Delas Llagas Gilliane Shielu Curaza Submitted to: Shiela Mae Bolero February 26‚ 2013 CHAPTER I THE PROBLEM AND ITS SETTING This chapter informs the reader about the problem under the researchers’ study. Introduction In these times‚ many are having and suffering from skin diseases by bacteria called‚ Staphylococcus aureus bacteria. Bacterial
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Causes and Spread of Infection Unit 22 ICO2 Q1 1.1 * Bacteria are unicellular‚ prolcaryotic microorganism found almost in all kinds of habits. Some bacteria are beneficial like those involved in nitrogen fixation and some pathogenic‚ which causes diseases. * Viruses are unicellular‚ tiny organisms which are mostly composed of DNA (Deoxyribonucleic Acid) and protein. Its body compromises of head and tail sections. Viruses attach themselves to other organisms and severe infectious diseases
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responsible for stomach ulcers and plague: Bacteria - are prokaryotes: Bacteria - impart distinctive flavors in foods such as yogurt and cheese: Bacteria - are obligate intracellular parasites: Viruses - have a protein coat that surrounds the genetic information: Viruses - include molds and yeasts: Fungi - contain the protozoa and algae: Protists - derive their energy from degrading organic materials: Fungi - are the most metabolically diverse group: Bacteria - Which one of the following sequences
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Sansonetti‚ 2004).These strategies‚ particularly those employed in the evasion of antibacterial peptides which are small cationic effector molecules such as Defensins‚ Cathelicidins and Thrombocidinsand phagocytes; white blood cells capable of engulfing bacteria‚ dead cells and foreign particles(Boman‚ 2003) will be discussed in details. EVASION OF ANTIBACTERIAL PEPTIDES In the attempt to occupy certain areas of their host’s anatomy‚ bacterial pathogens will be exposed to antibacterial peptide-mediated
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which cause disease or spoilage of beverages and food‚ but it is now recognized that many microbes have essential roles in our ecosystem or can be used to accomplish beneficial tasks. Human history is full of examples of major devastations caused by bacteria and viruses. Some of these historically important diseases still occur‚ such tuberculosis and yellow fever. Microorganisms are evolving to cause new infectious disease problems such as Lyme disease and AIDS‚ which capture public attention. Control
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and practices of street food vendors in Atbara city between March and April‚ 2008. The questionnaires respondents were 28% male and 72% were female‚ 48% of them had primary school education while 42% were illiterates. The most prevalent isolated bacteria from cooked meals‚ bottled drink and fresh juice were; Escherichia coli‚ Staphylococcus auerus and Bacillus sp. The viable bacterial counts were 4.6 CFU/ml‚ 3.7 CFU/ml and 4.1 CFU/ml for cooked meals‚ bottled drink and juice‚ respectively. Key words:
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1) Your Answer: | single-stranded (ss) RNA | | Correct Answer: | All of the listed responses are correct. | | No. Single-stranded RNA is the genetic material of certain viruses‚ but there is a better answer. 4. Viruses that infect bacteria are called _____. ( Concept 19.1) Your Answer: | capsomeres | | Correct Answer: | bacteriophages | | No. Capsomeres are the protein subunits of the capsid‚ the protein shell that encloses the viral genome. 5. HIV‚ the virus that causes
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BASIC FOOD MICROBIOLOGY 1. Why do we need to identify bacteria in our food? 2. What is microbiology? 3. What is microorganism? Give examples. 4. Bacteria exist in two states. What are they? 5. What are the differences between spore and vegetative cell? 6. Bacteria vary in shape. Name the shape of bacteria that you learn. 7. What are the effects on food caused by spoilage bacteria and pathogenic bacteria? 8. What are the differences between eukaryote and prokaryotes
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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. Materials 1) Microscope 2) Lab Coat 3) Gram Staining
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