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Questions and Answers
Which bacterial type maintains a single shape?
Which bacterial type maintains a single shape?
What are genetically monomorphic bacteria known for?
What are genetically monomorphic bacteria known for?
Extremely low levels of genetic diversity
Which of the following is an example of pleomorphic bacteria?
Which of the following is an example of pleomorphic bacteria?
How are diplococci arranged?
How are diplococci arranged?
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What is the structure that provides bacterial cells with support and protection?
What is the structure that provides bacterial cells with support and protection?
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Bacilli can appear in pairs after division.
Bacilli can appear in pairs after division.
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Which of the following bacteria are known for forming spores?
Which of the following bacteria are known for forming spores?
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What is the genetic material of bacterial cells described as?
What is the genetic material of bacterial cells described as?
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Which of the following is a characteristic of spirilla?
Which of the following is a characteristic of spirilla?
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Match the bacterial arrangements with their correct descriptions:
Match the bacterial arrangements with their correct descriptions:
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Study Notes
### Bacterial Shapes and Arrangements
- Monomorphic bacteria maintain a single shape throughout their life cycle.
- Genetically monomorphic bacteria are known for their consistent shape, determined by their genetic makeup.
- Pleomorphic bacteria can exhibit various shapes, including cocci, bacilli, and spirals.
- Diplococci are arranged in pairs.
- Cell walls provide bacterial cells with support and protection.
- Bacilli can form pairs, known as diplobacilli, after division.
- Spore-forming bacteria, like Bacillus and Clostridium, are known for their ability to produce endospores, which are resistant structures that allow bacteria to survive harsh conditions.
- The genetic material of bacterial cells, DNA, is located in a region called the nucleoid.
- Spirilla are spiral-shaped bacteria with a rigid structure.
Bacterial Arrangements
- Streptococci: Chains of cocci.
- Staphylococci: Grape-like clusters of cocci.
- Diplococci: Pairs of cocci.
- Tetrad: Groups of four cocci.
- Sarcina: Cubical packets of eight cocci.
- Streptobacilli: Chains of bacilli.
- Palisades: Bacilli arranged side-by-side like picket fences.
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