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Questions and Answers
What is the basic structural unit of all living organisms?
What is the basic structural unit of all living organisms?
- Organism
- Cell (correct)
- Tissue
- Organ
What is the characteristic of a prokaryotic cell?
What is the characteristic of a prokaryotic cell?
- It has a true nucleus
- It has mitochondria
- It has a cell wall
- It lacks a true nucleus (correct)
What is a characteristic of a eukaryotic cell?
What is a characteristic of a eukaryotic cell?
- It has a cell wall
- It has a true nucleus (correct)
- It lacks mitochondria
- It lacks a true nucleus
Which of the following is NOT a characteristic of a prokaryotic cell?
Which of the following is NOT a characteristic of a prokaryotic cell?
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What is the term for a 'weak' cell that lacks a true nucleus?
What is the term for a 'weak' cell that lacks a true nucleus?
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Study Notes
Cell Biology
- The cell is the structural and functional unit of all living organisms.
- It is the basic unit of life, responsible for various biological processes.
Types of Cells
- There are two main types of cells based on their structure:
Prokaryotic Cells
- A type of cell that lacks a true nucleus (primitive nucleus).
- Characteristics:
- No nuclear envelope (membrane).
- No membrane-bound organelles.
- Examples: bacterial cells.
Eukaryotic Cells
- A type of cell that has a true nucleus (advanced nucleus).
- Characteristics:
- Has a nuclear envelope (membrane).
- Has membrane-bound organelles.
- Examples: cells of higher organisms.
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