Lecture 5 Flashcards
Endomembrane system is…
A series of organelles that work together to synthesis, package, label and ship proteins and molecules
Functions of smooth ER
Metabolism of carbohydrates
Lipid synthesis
Detoxification
Storage of calcium
Functions of rough ER
Protein synthesis
What is the packaging plant…
Golgi
Functions of golgi
Receive, modify, sort, and ship proteins
Vesicles arrive at … face of golgi
Cis
Vesicles leave Golgi at … face
trans
Addition or modification of carbohydrates to proteins
Glycosylation
Nuclear envelope
Contains nucleus and controls what enters and exits
Vesicles
Transport around the cell
Lysosomes
Digestive organelle, macromolecules are hydrolysed
Vacuole
Storage, breakdown of waste, hydrolysis of macromolecules
Plasma membrane
Encloses cell, controls entry and exit of materials
Exocytosis
Taking things out of plasma membrane
Phagocytosis
‘Cell eating’ taking in large food molecules. Forms phagocytes vacuole which fuses with lysosomes to digest
Pinocytosis
‘Cell drinking’ uptake of extra cellular fluid, non-selective, membrane forms inwards and coat protein helps direct
Receptor mediated endocytosis
Uses receptors expressed on cell membrane to select for solutes in low conc
Exocytosis
Transport of material out of e cell and delivery to cell surface
Constitutive exocytosis
Continuous release of proteins
Regulated exocytosis
Occurs upon receiving a signal, release of hormones and neurotransmitters
Sorting proteins
Adding molecule markets to direct proteins to correct vesicles
Directing vesicles trafficking
Add molecule tags to direct to correct targets
