Podcast
Questions and Answers
What is the main reason for calling bacterial cells 'prokaryotic'?
What is the main reason for calling bacterial cells 'prokaryotic'?
- They have defined geometric shapes
- They are sedentary
- They are green in color
- They have very little visible internal organization (correct)
Which term refers to cells that have flexible boundaries?
Which term refers to cells that have flexible boundaries?
- Eukaryotic (correct)
- Sedentary
- Community cells
- Prokaryotic
What is the size range of the vast majority of bacterial cells?
What is the size range of the vast majority of bacterial cells?
- 1-2 µm (correct)
- 5-10 µm
- 2-3 µm
- 15-20 µm
Why are bacterial cells often described as having no obvious coloration?
Why are bacterial cells often described as having no obvious coloration?
Bacterial cells are characterized as prokaryotic because they have very little visible internal organization.
Bacterial cells are characterized as prokaryotic because they have very little visible internal organization.
The vast majority of bacterial cells are 10-20 µm in length.
The vast majority of bacterial cells are 10-20 µm in length.
All cells exhibit a staggering diversity in terms of their characteristics and behaviors.
All cells exhibit a staggering diversity in terms of their characteristics and behaviors.
What term is used to describe cells with very little visible internal organization and genetic material free within the cell?
What term is used to describe cells with very little visible internal organization and genetic material free within the cell?
Some cells have no defined geometric shapes.
Some cells have no defined geometric shapes.
What is the size range of the vast majority of bacterial cells?
What is the size range of the vast majority of bacterial cells?
What are the two main types of cells mentioned in the text?
What are the two main types of cells mentioned in the text?
What is the meaning of 'prokaryotic' in Greek?
What is the meaning of 'prokaryotic' in Greek?
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Study Notes
Cell Characteristics
- Bacterial cells are called 'prokaryotic' because they have very little visible internal organization.
- The term 'prokaryotic' comes from Greek, meaning "before nucleus" or "primitive nucleus".
- Prokaryotic cells have genetic material free within the cell and lack visible internal organization.
Cell Structure and Shape
- Some cells have no defined geometric shapes.
- Cells with flexible boundaries are referred to as 'amoeboid'.
Cell Size
- The vast majority of bacterial cells are 10-20 µm in length.
Cell Types
- There are two main types of cells mentioned in the text: prokaryotic and (implicitly) eukaryotic.
Cell Features
- Bacterial cells are often described as having no obvious coloration.
- All cells exhibit a staggering diversity in terms of their characteristics and behaviors.
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