spread of infection 1.1. Identify the differences between bacteria‚ viruses‚ fungi and parasites All 4 are different types of pathogens Bacteria is a single celled organism that multiply by themselves. They lives within and on most living and nonliving things. The majority of bacteria’s are harmless and beneficial to the human body but some can cause infectious diseases. A bacterium usually affects one part of the body and doesn’t spread across or through the body. Bacterial infections are normally
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256 – Causes and spread of infection 1. – Understand the cause of infection. 1.1 – Identify the differences between bacteria‚ viruses‚ fungi and parasites. Answer to 1.1 – The difference between bacteria‚ viruses‚ fungi and parasites are: Bacteria – Bacteria is a single celled organism‚ bacteria have evolved to be in any environment and can be found in any substance/surface and also in the human body‚ only 1% of bacteria is actually harmful. It’s bad or infectious bacteria that causes illness as they
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Causes and spread of infection Micro-organisms that cause infections are known as pathogens. They may be classified as follows: Bacteria: minute organisms about one-thousandth to five-thousandths of a millimetre in diameter. They are susceptible to a greater or lesser extent to antibiotics. Viruses: much smaller than bacteria and although they may survive outside the body for a time they can only grow inside cells of the body. Viruses are not susceptible to antibiotics‚ but there are a few
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A. Is a Virus Alive? 1. Viruses are segments of nucleic acids contained in a protein coat. 2. Pathogens are agents that cause disease. 3. Viruses do not grow‚ do not have homeostasis‚ and do not metabolize‚ therefore scientists don’t consider them to be living. 4. Discovery of Viruses i. Scientists filtered bacteria from the sap of infected plants‚ and were surprised to find that the filtered sap could still cause uninfected plants to become infected. ii. In 1935‚ Wendell Stanley of the Rockefeller
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Lab 4: Fungi Non-filamentous forms — Single-celled Yeasts Do an Internet search for a microscopic image of baker’s yeast‚ Saccharomyces cerevisiae (Ascomycota). Answer the following questions: 1. Do the yeast cells have a definite shape or is there considerable variation? Yeast cells seem to vary in shape‚ some look to be more oval and round‚ although. some slides did show pear and cylinder shapes. 2. Can you detect any subcellular structure? I cannot detect a clearly visible
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Causes and Spread of infection (ICO2) 1) Infections are the result of the body’s inability to fight off microorganisms that can cause damage or disease if they are left untreated. They can be viral or bacterial in nature and might be caused by a fungus or parasite. There are many common types and there are some rare ones which all have varying causes and treatments. Common bacterial infections include strep throat‚ urinary tract infections and E. coli; the different types are caused by many different
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Section 1: Infections in Healthcare Settings Essay. Nosocomial infections‚ hospital acquired infections‚ are an on-going concern to healthcare professionals. These infections are one of the major causes of death in hospitalised patients and are a significant burden on not only the patient’s and the public’s health (as organisms causing nosocomial infections can be transmitted to the community through discharged patients‚ staff and visitors) but also the economy. A nosocomial infection is an infection
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Parasites: Uncovering the Role of the Parasite Host Relationship According to the CDC around seventeen percent of Americans are infected with only one type of parasite. This figure did not take into account all the species of parasites‚ nor the percentage of the undeveloped world infected‚ and when taken into consideration the figures are staggering. Parasites are organisms that make their living by residing attached to or within another organism. They use the organism for food‚ shelter‚ and
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Virus and Bacteria Virus - A virus is a capsule of protein that contains genetic material. A virus cannot reproduce on its own; it must infect a living cell to grow. Bacteria - Bacteria are one-celled organisms that live on their own. They can multiply and reproduce by subdivision Bacteria and viruses cause many of the diseases we are familiar with and may sound synonymous; they are greatly different from each other. [pic] o They differ greatly in size. The biggest viruses are only as large
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Bioluminescence in Fungi INTRODUCTION What is Bioluminescence? The current paper main focus is on bioluminescent Fungi but the basic features of bioluminescence discussed are common to all bioluminescent organisms. Bioluminescence is simply light created by living organisms. Probably the most commonly known example of bioluminescence by North Americans is the firefly‚ which lights its abdomen during its mating season to communicate with potential mates. This bioluminescent ability occurs in
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