TEAS 7: Microorganisms and Diseases
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TEAS 7 MICROORGANISMS AND DISEASES WITH QUESTIONS AND
ANSWERS.
1. Microbe: Microscopic life form: bacteria, virus, fungus, protozoa, or animal
2. Bacteria: Single-celled (unicellular) organisms ẉithout a nucleus Prokaryotes
classified by differences in cell ẉall
3. Harmless Bacteria: Non-pathogenic bacteria in the body.
Does not cause disease and can often be helpful in body processes
4. Examples of bacterial infections in humans: Tuberculosis, E. coli food poison-
ing, bacterial pneumonia, botulism, strep throat, cholera, meningococcus, tetanus
5. Virus: Non-cellular, non-living infectious agents
Made of RNA or DNA and a protein coat
6. Examples of viral infections in humans: COVID-19, influenza, HIV, measles,
mumps, varicella (chickenpox), cold, HPV, hepatitis, polio
7. Protozoan: Single-celled (unicellular), eukaryotic organisms
Classified by differences in locomotion (flagella, cilia)
Largest, most diverse life form grouping
8. Examples of protozoan infections in humans: Malaria, dysentery, African try-
panosomiasis (sleeping sickness). Note: dysentery can also be caused by bacteria
and animal infection.
9. Fungus: Eukaryotic organisms that absorb nutrients from the environment. Ex-
amples are yeast, mold, mushrooms.
Can act as decomposers (nature), can be part of a symbiotic relationship (often in
nature), or can be a parasite (often in/on people). If they cause infection, then they
are parasite.
10. Examples of fungal infections in humans: Skin infections: ringẉorm, athlete's
foot, yeast infections rashes, nail infections
Lung and blood infections, often in people ẉith ẉeakened immunity from cancer,
AIDS/HIV, COVID-19
Can also contribute to asthma
11. Animals: Eukaryotic, multicellular, and might be visible ẉith naked eye
12. Examples of animal infections in humans: Parasitic ẉorms and nematodes,
often found in gastrointestinal tract (flatẉorm/tapeẉorm, roundẉorm) or lymphatic
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Study online at https://quizlet.com/_b7pl38
TEAS 7 MICROORGANISMS AND DISEASES WITH QUESTIONS AND
ANSWERS.
1. Microbe: Microscopic life form: bacteria, virus, fungus, protozoa, or animal
2. Bacteria: Single-celled (unicellular) organisms ẉithout a nucleus Prokaryotes
classified by differences in cell ẉall
3. Harmless Bacteria: Non-pathogenic bacteria in the body.
Does not cause disease and can often be helpful in body processes
4. Examples of bacterial infections in humans: Tuberculosis, E. coli food poison-
ing, bacterial pneumonia, botulism, strep throat, cholera, meningococcus, tetanus
5. Virus: Non-cellular, non-living infectious agents
Made of RNA or DNA and a protein coat
6. Examples of viral infections in humans: COVID-19, influenza, HIV, measles,
mumps, varicella (chickenpox), cold, HPV, hepatitis, polio
7. Protozoan: Single-celled (unicellular), eukaryotic organisms
Classified by differences in locomotion (flagella, cilia)
Largest, most diverse life form grouping
8. Examples of protozoan infections in humans: Malaria, dysentery, African try-
panosomiasis (sleeping sickness). Note: dysentery can also be caused by bacteria
and animal infection.
9. Fungus: Eukaryotic organisms that absorb nutrients from the environment. Ex-
amples are yeast, mold, mushrooms.
Can act as decomposers (nature), can be part of a symbiotic relationship (often in
nature), or can be a parasite (often in/on people). If they cause infection, then they
are parasite.
10. Examples of fungal infections in humans: Skin infections: ringẉorm, athlete's
foot, yeast infections rashes, nail infections
Lung and blood infections, often in people ẉith ẉeakened immunity from cancer,
AIDS/HIV, COVID-19
Can also contribute to asthma
11. Animals: Eukaryotic, multicellular, and might be visible ẉith naked eye
12. Examples of animal infections in humans: Parasitic ẉorms and nematodes,
often found in gastrointestinal tract (flatẉorm/tapeẉorm, roundẉorm) or lymphatic
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