Flashcards
Cell Biology : SER, Golgi Apparatus and vesicle transport
Flashcards do conjunto (13)
- 1The structure of the ERDynamic network-continually breaking and reforming.
Connected to the nuclear envelope.
Forms hollow tubes and flattened sacs.
Chambers are called cisternae.
RER(ribosomes) and SER(no ribosomes) - 2Major functions of the ER1. Synthesis
2. Storage
3. Transport
4. Detoxification - 3Functions of the SER1. Phospholipid and cholesterol synthesis
2. Steroid hormone production
3. Synthesis and storage of glycerides
4. Synthesis and storage of glycogen
5. Important role as calcium store - 4Detoxification in the SERBy the p450 cytochrome family:
Break down of medications and toxins
Involved in the synthesis of things such as steroid hormones
Changes water insoluble drugs to soluble so they can be removed in urine - 5The structure of the Golgi ApparatusFlattened discs called cisternae
has 5-6 cisternae
near nucleus
Communicates with ER and plasma membrane by vesicles - 6Functions of the Golgi Apparatus1. Modifies and packages secretory proteins for release (exocytosis)
2. Renews and modifies the cell membrane
3. Delivery of material to other organelles - 7What is the site of Carbohydrate production?Golgi Apparatus
- 8What do vesicle coats do?Aid in formation of the vesicle
- 9What are the 3 types of coats and their involvement in specific transport?COPII - vesicles from ER to Golgi
COPI - vesicles coming backwards from Golgi to ER
Clathrin - endocytosis cell membrane to Golgi - 10What is the use of SNAREs?To help vesicles reach the correct targets
- 11Where can you find the SNAREs?v-SNARE on the vesicle membrane
t-SNARE on the target membrane - 12What are the 2 models for progression through the Golgi and how do they differ?Vesicular transport model - static where vesicles move from one cisternae to another
Cisternae maturation model - dynamic where the cis may become trans - 133 pathways from the trans-golgi network1. Regulated secretory pathway - exocytosis
2. Constitutive secretory pathway - membrane proteins
3. Signal mediated diversion to lysosomes
Informações
- Descrição
- Cell Biology FlashCards sobre Cell Biology : SER, Golgi Apparatus and vesicle transport, criado por savaniprachi em 29-05-2014.
- Criado por
- savaniprachi · mai 2014
- Atualizado
- 19 fev 2016
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