Unit 5: The Endomembrane System Flashcards
A group of membranes and organelles in eukaryotic cells that work together to modify, package, and transport lipids and proteins
Endomembrane System
An organelle that plays a key role in the modification of proteins and the synthesis of lipids
Endoplasmic Reticulum
The hollow space inside the discs and tubules of the endoplasmic reticulum
Lumen
If the modified proteins are not destined to stay in the ER, they will be packaged into […] and shipped to the […]
- vesicles
- Golgi apparatus
The functions of the rough ER
- make proteins
- modify proteins
- package and transport proteins
- make phospholipids for other cellular membranes
The functions of the smooth ER
- synthesize carbohydrates, lipids, and steroid hormones
- detoxify medications and poisons
- store calcium ions
A special type of smooth ER responsible for the storage of calcium ions needed by muscle fibers for coordinated contractions
sarcoplasmic reticulum
Patches found in the rough ER that serve as exit sites for vesicles
transitional ER
An organelle made up of flattened discs of membrane that sorts, tags, packages, and distributes vesicles
Golgi apparatus
The receiving side of the Golgi apparatus is called the […] and the opposite side is called the […]
- cis face
- trans face
An organelle that contains digestive enzymes and acts as the organelle-recycling facility of animal cells
Lysosome
An organelle that stores water and wastes, isolates hazardous materials, and breaks down macromolecules and cellular components
Vacuoles
An organelle that breaks down fatty acids and amino acids and detoxifies alcohol
Peroxisomes
The 4 organelles of the endomembrane system
- endoplasmic reticulum
- Golgi apparatus
- lysosome
- vacuoles
