Identify the differences between bacteria viruses‚ Fungi and Parasites. Viruses are pieces of nucleic acid (DNA or RNA) wrapped in a thin coat of protein that replicate only within the cells of living hosts. Bacteria are one-cell microorganisms with a simple cellular organization whose nucleus lacks a membrane. Parasites may be protozoa‚ yeasts‚ or multicellular organisms such as fungi or worms that live in or on a host to obtain nourishment without providing any benefit to the host. Fungi
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P1: you must explain how infections are caused by‚ bacteria‚ viruses‚ fungi and parasites. P2: you must explain how pathogenic microorganisms grow and spread. In this assignment I am going to explain how infections are caused by‚ bacteria‚ viruses‚ fungi and parasites. I will then explain how pathogenic microorganisms grow and spread. Infection is the process where germs enter a susceptible area in the body‚ where they multiply‚ resulting in disease. Colonisation is where microbes are present
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1) Go to the website: http://www.microscopyu.com/moviegallery/pondscum/amoeba/ Next to “Choose Video” click on the Amoeba link 1 and then link 2. Describe the motion that you see: [ ] 2) You will need to travel to new websites to complete this part. Follow this link: http://www.enchantedlearning.com/subjects/protists/amoeba.shtml and scroll down to answer the following questions: Describe the following about Amoebas: A. Anatomy: [ ] B. Diet: [ ] C. Locomotion: [ ] D
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organisms Host-parasite interactions often operate over a longer timescale than those seen with other pathogens Results in significant host-parasite interaction at the cellular and organismal level E.g. Parasites that alter the behavior of the host Giardia lamblia – induce biochemical change in the host cells at the site of infection (duodenal epithelium) Parasites – have life cycles that often involve several hosts (survival and transmission between different hosts requires the parasite to exhibit more
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surround and engulf prey item Diverse Modes of Nutrition Protists that absorb nutrients directly from the surrounding environment can be Free-living types in the soil that decompose organic dead matter Parasites that live inside the bodies of other organisms‚ sometimes harming the host Diverse Modes of Nutrition Some protists have photosynthetic organelles called chloroplasts Photosynthetic protists are abundant in oceans‚ lakes
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Study Guide for Exam 3 This will be a terminology-heavy exam. Make sure to study definitions. Compare your tables to a couple of classmates’ tables. Be familiar with life cycles as indicated. Do qs listed on Moodle –both the exam forum III and qs I’ve posted with power points Focus on the power point lectures‚ posted Remember‚ this is only a guide. Use your class notes‚ textbook‚ and all materials on Moodle General comments: The format of this exam MAY include fill in the blank‚ diagrams
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Staphylococcus · Clostridium perfringens · Norovirus (formerly Norwalk virus) · Hepatitis A · Giardia or amoeba parasites Students write a 75-150 word response to each of the following questions: · What is the infectious agent (pathogen) that causes this infectious disease? For example‚ the name of the bacteria‚ virus‚ or parasite. Hint: identify the pathogen then state if it is a bacteria‚ virus or parasite. Hepatitis A is an infectious agent. Hepatitis A is also a liver disease. Hepatitis means
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hyphae Sexual reproductive structures‚ oogonium and antheridium Zygote is called an oospore Asexual reproduction by biflagellated zoospores Cellulose cell walls Heterotrophic‚ decomposers and parasites ~ 500 species Example Saprolegnia -Phylum Phaeophyta (Brown Algae or Kelps) Marine tidal zone to 75 feet deep in temperate waters Sizes to 10O feet Color: brown to olive brown
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multicellular named after a spiral shaped chloroplast autotrophic Diatoms (Plantlike Protist) produce thin cell walls of silicon‚ main component of glass EUGLENA (Plant like Protist) Paramecium (Animal like protist) Amoeba (Animal like protist Animal-like protists‚ called protozoa‚ get their energy by eating food. Plantlike protists‚ called algae‚ make their food by photosynthesis‚& include ocean phytoplankton & green pond algae. Fungus-like protists live
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Salmonella * Staphylococcus * Clostridium perfringens * Norovirus (formerly Norwalk virus) * Hepatitis A * Giardia or amoeba parasites Write a 125- to 150-word response to each of the following questions: * What is the infectious agent (pathogen) that causes this infectious disease? For example‚ the name of the bacteria‚ virus‚ or parasite. Salmonella comes from bacteria called salmonella. Salmonella has been around for over a hundred years and there are many cases reported
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