Zusammenfassung der Ressource
Cellular Structure
- Microtubules
- Structure: long, hollow cylinders
that consist of subunits of the
protein tubulin.
- Function :form a framework for structures
such as the spindle apparatus that appears
during cell division, or the whiplike
organelles known as cilia and flagella
- Endoplastic Reticulum
- Function: the folding of protein molecules in sacs called cisternae and the transport of synthesized
proteins in vesicles to the Golgi apparatus.
- Structure: A continous compartment that folds into flattened sacs and tubes
- Microfilaments
- Structure: fibers that consist
primarily of subunits of the globular
protein acitin.
- Function: they strengthen or change the shape of eukaryotic cells.
- Plasma Membrane
- Function: An outer membrane that separates
the cell's contents from its environments
- Structure: proteins embedded in a bilayer or attached to one of
its surfaces carry out membrane functions.
- Lysosomes
- Function: Digests, and recycles materials
- Structure: cellular organelles that contain acid hydrolase enzymes that break down waste
materials and cellular debris
- Nuclear Envelope
- Structure: 2 lipid bilayers folded together as a single membrane, the outer boundary of the nucleus
- Function: Pores in the membrane control which substances can cross
- Golgi Aparatus
- Function: packing proteins
- Structure: sacks or folds
- Nucleous
- Function: Only found in eukaryotic cells, an
organelle that contains the cells DNA
- Structure: double membrane
- Ribosomes
- Function: sites of protein synthesis
- Structure: attached to rough ER and free in the cytoplasm
- Intermediate Filaments
- Function: support cells and tissues, the most stable elements of the cytoskeleton
- Structure: From a framework that lends structure to cells and tissues
- Extracellular Matrix
- Structure: a complex mixture of fibrous proteins and polysaccharides
- Function: The composition and function of ECM varies by the
type of cell that secrets it
- Cell Junctions
- Structure: Structures that connect a cell to other
cells and to the environment
- Function: Cells send and receive ions, molecules, or signals through some junctions.
- Microfilaments
- Function: They strengthen or change the shape of eukaryotic cells
- Structure: Fibers that consist primarily of subunits of the globular protein acids.
- Chloroplasts
- Function: Plastids specialized for photosynthesis
- Structure: Most chloroplasts are oval or disk-shaped. Each has 2 outer
membranes enclosing a semifluid interior