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  • Three Of The Many Bacterial Viruses
    628 words
    Viruses are infectious agents found in almost all life forms. The viruses are made up either of DNA or RNA, surrounded by a capsid, a protein coat. Viruses are between 20 and 100 times smaller than bacteria, or about 450 nanometers (. 000014), being the largest, to 30 nanometers (0.000001 in.) being the smallest which make them virtually impossible to be seen by light microscopes. Viruses often damage or even kill the cells they infect. They reproduce by releasing their nucleocapsid, or a copy o...
  • Oxygen And The Hard Shelled Bacteria
    461 words
    The origin of Eukaryotic cells In the beginning of the creation of Earth volcanoes erupted all over the planet. During this period there was a time where a brief cooling period was allowed to take place. When this period took place evaporation caused a downpour of rain which flooded the ocean creating the ocean. At the time that ocean was averaged at 3,000 degrees Fahrenheit. Around this same time an asteroid so powerful hit the Earth knocking off a large chunk of it. This chunk became the moon ...
  • Four Types Of Bacteria Cells
    1,474 words
    Bacteria Bacteria are one celled organisms that are found almost everywhere. Bacteria live in soil, air, water and food. They also live in and on plants and animals. Bacteria can be found on our bodies in places such as our noses, mouths and intestines. Most bacteria measure from 0.3 to 2.0 microns in diameter. This means that bacteria can only be seen through a powerful microscope. Bacteriology is the study of bacteria. Some kinds of bacteria are helpful. Other kinds of bacteria can cause serio...
  • Different From Other Bacteria
    4,548 words
    BACTERIA (Gr. bakterion, "little staff"), group of microscopic, unicellular organisms that lack a distinct nucleus and that usually reproduce by cell division. are tiny, ranging from 1 to 10 micrometers (1 micrometer equals 1/25,000 in), and are extremely variable in the ways they obtain energy and nourishment. They can be found in nearly all environments-from air, soil, water, and ice to hot springs; even the hydrothermal vents on the deep ocean floor are the home of sulfur-metabolizing bacteri...
  • Bacterial Photosynthesis One Type Of Photosynthetic Bacteria
    657 words
    Describe the structure and life processes of bacteria. Bacterial cells, like plant cells, are surrounded by a cell wall. However, bacterial cell walls are made up of polysaccharide chains linked to amino acids, while plant cell walls are made up of cellulose, which contains no amino acids. Many bacteria secrete a slimy capsule around the outside of the cell wall. The capsule provides additional protection for the cell. Many of the bacteria that cause diseases in animals are surrounded by a capsu...
  • Gram Positive Bacteria
    842 words
    Bacteria Classification By Gram Staining THE AMERICAN UNIVERSITY IN CAIRO BIOLOGY DEPARTMENT SCIENCE 453: BIOLOGY FOR ENGINEERS REPORT No. 1 Presented By: Karim A. Zak lama 92-1509 Sci. 453-01 24/2/96 Objective: To test a sample of laboratory prepared bacteria and categorise it according to Christians gram positive and gram negative classes and also by viewing it under a high powered microscope and oil immersions; classify its shape and note any special characteristics. Introduction: Bacteria wa...
  • More Invasive Bacteria Responsible For Human Disease
    4,006 words
    Archaebacteria, simple organisms that resemble ordinary bacteria in that they lack a well-formed nucleus and can therefore be characterized as procaryotes in the classification of living organisms. Their biochemistry differs in important ways from that of other bacteria, however, and some biologists place them in a kingdom of their own. According to these theories, archaebacteria may be ancestral to the main cellular body of eucaryotes, or organisms with well-formed cell nuclei, whereas ordinary...
  • Most Common Form Of Bacteria
    1,371 words
    The Effects of Antibiotics on Bacterial Growth Biology II 1996 Bacteria are the most common and ancient microorganisms on earth. Most bacteria are microscopic, measuring 1 micron in length. However, colonies of bacteria grown in a laboratory petri dish can be seen with the unaided eye. There are many divisions and classifications of bacteria that assist in identifying them. The first two types of bacteria are. Both groups have common ancestors dating to more than 3 billion years ago. Archaebacte...
  • Light Organ
    413 words
    Nyholm and Mcfall-Ngai. 1998. Sampling the Light-Organ Micro environment of Euprymna sco lopes: Description of a Population of Host Cells in Association with the Bacterial Symbiont Vibrio. Biol. Bull. 195: 89-97 Upon collecting a species of squid, Euprymna sco lopes, from the coast of Oahu, Hawaii, it was revealed that a light organ contained near its mandible is host to a bio luminescent bacteria, Vibrio. These light-organ crypts have lateral pores that expel a dense matrix consisting of live a...
  • Gram Stain
    801 words
    Abstract The main objective of this lab was to identify different bacteria by simple, negative, and gram staining. To view each bacteria cell, the bacteria was transferred aseptically to a slide, and they were then viewed by using oil immersion, by a light microscope. From this lab, it was determined that E. coli and B. megaterium are gram negative and B. subtilis and S. Marcesans are gram positive. Introduction The purpose of this lab was to view the different characteristics of bacteria by app...
  • 100000 Penicillin Resistant Disease
    3,258 words
    was the first naturally-occurring antibiotic discovered - and the first to be used therapeutically. An antibiotic is any substance produced by a microorganism which can kill or inhibit the growth of a different microorganism. We now call such substances, and any similarly-acting substances which humans design, chemotherapeutic agents. Before we begin to talk specifically about penicillin, it will be useful to kind of place you in the life and times of people in the 1800's. During this time, no o...
  • Bacteria Cells
    1,400 words
    – Oldest, Bacteria Outline Bacteria – Oldest, structurally simplest, most abundant forms of life – Only organism with prokaryotic cellular organization – The only members of the kingdom Monera (4800 different kinds) – Characteristics change depending on growth conditions – Maintenance of life depends on them – play vital role of productivity and as de composers – Capable of fixing atmospheric N for use by other organisms – Used in production ...

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