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21 Cards in this Set

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recombinant DNA
deliberately alter DNA switch genetic material from one organism to another.
Bacteria are easily genetically engineered because of their adaptability to _______
changes in their genetic makeup.
Bioremediation
Introduction of microbes into the environment to restore stability or to clean up toxic pollutants.
Pathogens
Nearly 2,000 microbes that cause disease.
Malaria kills _____every year.
It is caused by a ______.
more than a million people.
-microorganism transmitted by mosquitoes.
Diseases caused by microorganisms.
-Influenza and pneumonia
-Septicemia (bloodstream infec.)
-Respiratory infections
-HIV/AIDS
- Diarrheal diseases
-Tuberculosis.
-measles, Hep. B, tetanus, parasitic disease
Recently identified diseases that causes mortality/morbidity are _______?
SARS, AIDS, hepatitis C, and viral encephalitis
roles of microorganisms in certain diseases:
-infertility caused by Chlamydia
-malignancies such as liver (hepatitis virus), cervical cancer (human papillomavirus)
Microorganisms are groups of organisms called:
Bacteria (E.Coli), fungi (Thamnidium), protozoa (Vorticella), algae (Volvox and Spirogyra), viruses (Herpes simplex), and parasitic worms/Helminth (Taenia solium).
Difference between eukaryotic cells and prockaryotic cells
Prokaryotes: smaller than eukaryotes. Lack special structures such as nucleus and organelles. ALl pro are microorganisms, but not all euk.
Organelles are _____
Small membrane bound cell structures that perform specific functions in eukarotic cells.
Bodies of most microorganisms consist of
single cell or just a few cells.
Viruses
- not cells. Small particles that exist at a complex molecule.
-more simpler than cells.
-composes of small amount of hereditary material wrapped up in a protein covering.
-highly dependent on a host cell's machinery for their activities.
most microorganisms live a free existence in places such as soil/water and are harmless. Derive all food from nonliving environment. Some require interaction with other organisms..cAlled?
Parasites. They are harbored/nourished by other living organisms, called hosts. Action cause damage to its hose through infection/disease.
Most microorganisms are measured in micrometeres except for?
Helminths are measured in millimeteres, and viruses are emasured in nanometeres.
Range of electron microsocpe:
1nm - 200nm
(virus)
Range of Light microscope
1um-100um
(bacteria, algae)
Germ theory of disease
human diseases could arise from infection. (Pasteur)
Levels of Classification
kingdom,phylum,class, order, family, genus
protists
lack tissue differentiation. (simple organisms).
5 subdivisions of kingdom-
monera (prokaryote), fungi, protists, plants, and animals.