Questions and Answers
Which of the following are classes of microorganisms? (Select all that apply)
What are bacteria?
Simple, one-celled organisms that multiply rapidly.
How are bacteria classified?
By shape and arrangement.
What shape are cocci?
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What are diplococci?
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What are streptococci?
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What are staphylococci?
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What shape are bacilli?
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What are flagella?
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Bacilli in spore form are easy to kill.
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What bacteria can cause tuberculosis and tetanus?
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What shape are spirilla?
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What type of bacteria is vibrio?
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What type of bacteria is spirochete?
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Which diseases are caused by spirilla?
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What is used to kill bacteria?
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What is it called when an antibiotic is no longer effective against bacteria?
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Study Notes
Classes of Microorganisms
- Major classes include Bacteria, Protozoa, Fungi, Rickettsiae, and Viruses.
Bacteria
- Simple, one-celled organisms that reproduce rapidly.
Classification of Bacteria
- Bacteria are classified by shape and arrangement.
Cocci
- Round and spherical bacteria.
- Variants include:
- Diplococci: Occur in pairs and can cause gonorrhea, meningitis, and pneumonia.
- Streptococci: Occur in chains, leading to severe sore throat (strep throat) and rheumatic fever.
- Staphylococci: Occur in clusters, associated with infections such as boils, urinary tract infections, wound infections, and toxic shock.
Bacilli
- Rod-shaped bacteria that can occur singly, in pairs, or chains.
- Many bacilli possess flagella for movement and can form spores or thick-walled capsules under adverse growth conditions, making them hard to eliminate.
- Associated with diseases such as tuberculosis, tetanus, pertussis (whooping cough), botulism, diphtheria, and typhoid.
Flagella
- Thread-like projections resembling tails that enable bacterial movement.
Spirilla
- Spiral or corkscrew-shaped bacteria.
- Variants include:
- Vibrio: Comma-shaped bacteria.
- Spirochete: Corkscrew-shaped bacteria, linked to diseases like syphilis and cholera.
Antibiotics
- Medications designed to kill bacteria.
Antibiotic Resistance
- When bacteria become unaffected by antibiotics, they are referred to as antibiotic-resistant.
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Description
This quiz covers the classes of microorganisms, including bacteria, protozoa, fungi, rickettsiae, and viruses. Each flashcard provides definitions and classifications for different types of microorganisms and their characteristics. Perfect for studying microbiology terminology and concepts.
