sporophyte is dependent on the gametophyte which is the mosses dominant generation. 1. What is the major difference between prokaryotic and eukaryotic cells? Prokaryotes lack a nucleus. 2. What chemical associated with the cell wall gives Gram-positive bacteria their final color? Peptidoglycan 3. a. In what ways are cyanobacteria like algae and land plants? They go through the photosynthesis b. How are they different? They are prokaryotes
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Defenses against Infectious Diseases The human body has several general mechanisms for preventing infectious diseases. Some of these mechanisms are referred to as nonspecific defenses because they operate against a wide range of pathogens. Other mechanisms are referred to as specific defenses because they target particular pathogens and pathogen-infected cells. Nonspecific mechanisms are the body’s primary defense against disease. These mechanisms include anatomical barriers to invading pathogens
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Unit 11 Cleaning‚ Decontamination and Waste Management 1. Understand how to maintain a clean environment to prevent the spread of infection. 1.1 State the general principals for environmental cleaning The general principals for environmental cleaning are to ensure the hospital environment is as clean as possible to reduce the risk of infection‚ and that all precautions are taken in accordance to legislation and Healthcare policy’s and guidelines. “To prevent the transfer of micro-organisms which
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1 Understand the roles and responsibilities in prevention and control of infection A My role is to maintain a high standard of health and hygiene‚ which means regularly washing my uniform‚ regularly washing and keeping my hair clean and tied back‚ keeping my nails short and not wearing false nails or polish. Not wearing rings. Regularly washing my hands the correct way. I must report illness and any skin conditions to my manager and not come into work with diarrhoea and/or vomiting until 48 hours
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are not Pathogens Prokaryotic-no nucleus or organelles Very simplistic—like bacteria Eukaryotic-has nucleus and organelles like mitochondria Includes fungus‚ and animals Acellular-not even a complete cell Includes viruses and prions like those that cause Mad Cow disease Six main types of microorganisms Bacterium (prokaryotic) Fungus (eukaryotic) Algae (eukaryotic) Virus (acellular) Protozoan (eukaryotic) Helminth (eukaryotic) Most common infectious diseases worldwide
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essential uses of the plant and its active components. One can be its curative use and another is its microbiocidal use to cure the diseases of people. The causes of diseases are often linked with the pathogenic microorganisms. Microorganisms include the wide variety of organisms including bacteria‚ fungi‚ protozoa‚ planktons‚ and others. These organisms can only be seen with the aid of microscopes. The researcher did an alcohol extract that was used for the phytochemical analysis and found out
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1. What is the infectious agent (pathogen) that causes this infectious disease? For example the name of the bacteria‚ virus‚ or parasite. Giardia is protozoan and also flagellated. Flagellated means using appendages in a whip-like movement to propel. Giardia attaches to the host through the lining of the upper intestines. Once it attaches itself‚ it begins to feed and reproduce causing the giardiasis to commence. Giardia reproduces by dividing itself‚ which defines it as a trophozoite. This process
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- Gives a cell a definite shape and structure. - Provides structural support. - Protection against infection and mechanical stress. - Separates interior of the cell from the outer environment. - Plant Cells‚ Fungal Cells and bacteria have cell wall. - Protozoans and animals do not have cell wall. - Maintains the integrity of the genes which regulates the gene expression‚ in turn regulating the activities of the cell. Therefore‚ the nucleus is also known as the control center of the cell.
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Synthesis‚ Spectral‚ and Antibacterial Studies of Silver Nanoparticles and Silver(I) Complex of 2-Mercaptobenzothiazole Abstract : Microbes‚ such as bacteria‚ molds‚ yeasts‚ and viruses‚ in living environment are often pathogenic and cause severe infections in human beings. Therefore‚ there is a pressing need to search for new antimicrobial agents from natural and inorganic substances [1]. Antimicrobial nanoparticles mainly consist of metals‚ metal oxides‚ and many biologically derived materials
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virility‚ still immunity Lister ¡V aseptic surgery (phenol on surgical wounds) Koch ¡V cause of anthrax (Bacillus anthracis) ¡V bacteria in blood‚ injected into healthy‚ died‚ compared bacteria Jenner ¡V vaccines (cowpox provided immunity against small pox) ¡V milk maids Erlich ¡V ¡§magic bullet¡¨; salvarsan against syphilis Fleming ¡V Penicillium chrysogenum inhibited bacteria growth in plate Beadle & Tatum ¡V one gene one enzyme hypothesis Avery‚ MacLeod & McCarty ¡V DNA = hereditary material Tatum
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