Amy Rogers Office Hours: MW 9-10 AM • Viruses are on the border between living & nonliving things • Have either DNA or RNA‚ never both • Often cause death of the host cell • Genus/species names not used in viral classification Compenents of a virus (lipid bilayer) Viral components: Nucleic Acid • Viral genomes can be either DNA or RNA • This genome‚ once inside a host cell‚ directs synthesis of new viral proteins‚ and also replication of new viral genomes • Viral genomes come in all kinds:
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“Fighting Invisible Killers” Scholastic Scope: The Language Arts Magazine January 2014 Edition‚ pages 5-9 Bacteria surround us every day. These little “bugs” are invisible to the eye and most do not harm us. Many are necessary for us to survive‚ like the bacteria in our stomachs and intestines that help us to digest food. But some bacteria are very dangerous to us. Addie Rereich became very sick in May 2011‚ when she was 11 years old. What started as something that her doctors and mother
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288:57.04]:725 DOI:10.2298/ZMSPN0916245L M i l i c a V. L j a l j e v i ã G r b i ã J e l e n a B. V u k o j e v i ã Institute of Botany and Botanical Garden “Jevremovac"‚ University of Belgrade‚ Takovska 43‚ 11000 Belgrade‚ Serbia ROLE OF FUNGI IN BIODETERIORATION PROCESS OF STONE IN HISTORIC BUILDINGS ABSTRACT: Fungal ability in production of pigments and organic acids have crucial role in discoloration and degradation of different types of stone in cultural heritage objects. Additionally
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Bacteria are the most numerous type of microorganism found in the rhizosphere of the soil. They produce secondary metabolites which are capable of producing antibiotic which eventually inhibit or kill bacteria. The rhizosphere region of the soil is a highly favorable habitat for the proliferation‚ activity and metabolism of numerous microorganisms. The magnitude of this area depends on the plant and the size of the roots that the plant possesses. Bacteria are among the microorganisms living in the
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Bacterial Contamination April 15‚ 2013 Bacteria Contamination The definition of bacterial contamination is food contamination refers to foods that are spoiled or tainted because they either contain microorganisms‚ such as bacteria or parasites‚ or toxic substances that make them unfit for consumption This is very serious and people should take more precaution‚ food contamination is a serious because it results in foodborne diseases that each year affect an estimated seventy-six million
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Bacterial Smears Are Fixed before Staining to? Answer It is important to heat fix the bacterial smear before staining so as to‚ kill the bacteria‚ firmly adhere the smear on to the microscopic slide to prevent washing off during staining‚ and to allow the sample to readily take up the stain. Reference: www2.hendrix.edu What is the purpose of heat- fixing the smear? It helps the cells adhere to the slide so that they can be stained. The purpose of heat fixing is to kill the organisms without
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Methodology By using aseptic‚ a little cultured bacteria was inoculated on the TSA agar. A quadric streak was making. Inoculation loop was heated and keep it cold for a while before the next quadratic streak. Six agar plates were observed for 24 hour at temperature of 30ºC. Choose one from the dense colony and make a sub-culture on the new agar plate. The step was repeated to get a single colony‚ which is pure colony. a) Sequestration of bacteria from fish organs Methodology Dissecting set
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PROTIST WEBQUEST Part A: Click on the “Introduction to Protist” link and answer questions 16. Introduction to Protists Go to the website: http://www.funsci.com/fun3_en/protists/entrance.htm 1) What is a protist? [ Protists are very small‚ singlecelled eukaryotes. ] 2) What types of environments do they typically inhabit? [ ] 3) Are bacteria and protists the same thing? Why or why not? [ ] 4) What is a prokaryote?[ ] 5) What is a eukaryote?[ ] 6) What has a more complicated structure: bacteria or protists
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eat brains...although there are some....later! Another argument is that viruses should not be added to the tree of life...even the big viruses...but then the concept of a tree of life may be outdated as well2‚3. So‚ back to some virology. A virus can not make more of itself‚ or multiply‚ without help from the contents of living cells (lets leave
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Microorganisms can be prokaryotic—the bacteria or eukaryotic—the algae‚ protozoa or fungi. While viruses are acellular they are also studied in the scope of microbiology because they are small and because they infect cells. While most bacterial are unicellular they can also exist in colonial or multicellular forms. In this laboratory exercise you will examine the ubiquity and diversity of various microbes that are present in the environment or inhabit the human body. Most bacteria that inhabit the body are
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