Eukaryotic Flashcards
What is a eukaryotic cell?
A eukaryotic cell is a cell that possesses a true nucleus limited by a nuclear envelope, containing genetic material in the form of DNA and a highly structured cytoplasm containing numerous specific organelles.
What are the basic properties that a cell must exhibit to be considered a living organism?
- Se nourrir
- Croître
- Se développer
- Se reproduire
- Fonctionner de manière autonome
What is the protoplasm?
The protoplasm represents the content of a living cell, including the cytoplasm and the nucleus.
What does the cytoplasm consist of?
- Hyaloplasm
- Morphoplasm (organelles)
What is the hyaloplasm?
The hyaloplasm is a transparent structure that serves as a support for organelles and includes the cytosol and the cytoskeleton.
What is the cytosol?
The cytosol is a solution rich in water (approximately 80%), proteins, sugars, and ions, appearing homogeneous and transparent.
What is the size range of eukaryotic cells?
Eukaryotic cells generally range in size from 10 to 100 micrometers.
What types of organisms do eukaryotes correspond to?
- Multicellular organisms (animals, plants, fungi)
- Some unicellular eukaryotes (protists)
What are the two types of unicellular eukaryotes?
- Protozoa (animal-like protists, e.g., amoebas and paramecia)
- Protophytes (plant-like protists)
What is the function of the plasma membrane in a eukaryotic cell?
The plasma membrane constitutes a fluid and impermeable barrier that isolates the cell from the external environment and plays a role in selective barrier and regulation of water and ion concentrations.
True or False: All organelles within a eukaryotic cell are delimited by membranes.
True
Fill in the blank: The eukaryotic cell is limited by the _______.
[plasma membrane]
What are the main components of the eukaryotic cell?
- Nucleus
- Cytoplasm
- Organelles
What defines the morphological and functional specificity of eukaryotic cells?
Eukaryotic cells can exhibit a wide diversity of shapes and properties within the same organism.
What is the fundamental structural and functional unit of all living beings?
The cell