BIOL 2070 - LECTURE 7 EXAM QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS VERIFIED
What do transport vesicles do?
Carry soluble proteins across membranes between compartments
What system is a collection of organelles that are interconnected by the
movement of vesicles?
Endomembrane
The assembly of the protein coat drives what process?
Vesicle budding
FITB: Vesicle docking depends on _____ and ________.
Tethers and SNAREs
What is exocytosis?
The process where vesicles fuse with the plasma membrane, releasing its content to
the cell's surroundings
What is endocytosis?
The process where extracellular materials are captured by vesicles that bus inward from
the plasma membrane and are carried into the cell
True or False: Major secretory pathways lead from the endoplasmic reticulum to
the golgi appartus to the plasma membrane in vesicle transport
True
, True or False: A major endocytyic pathway leads from the plasma membrane to
the ribosomes.
False. To the lyososmes.
True or False: In vesicle transport proteins need to be sorted
True
FITB: _____ are pinched off of an existing membrane with the help of various
proteins that form a coat around it
Vesicles
Proteins needing to be moved have a sequence that allows them to what?
Bind to receptors in the membrane to then be carried along as vesicles pinch off
What are clathrins?
Proteins that assemble under the membrane to form basket-like cages underneath the
membrane
Where do clathrin-coated pits bud off?
The cytoplasmic side of membranes
How are cargo receptors and cargo bound?
Adaptin proteins
FITB: Clathrins bind to ____ and shape the ____ vesicle.
Adaptins..... budding
What is an example of a protein that wraps around the neck of a budding vesicle?
Dynamin
Hydrolysis of what bound to dynamin helps pinch of vesicles?
GTP
WITH COMPLETE SOLUTIONS VERIFIED
What do transport vesicles do?
Carry soluble proteins across membranes between compartments
What system is a collection of organelles that are interconnected by the
movement of vesicles?
Endomembrane
The assembly of the protein coat drives what process?
Vesicle budding
FITB: Vesicle docking depends on _____ and ________.
Tethers and SNAREs
What is exocytosis?
The process where vesicles fuse with the plasma membrane, releasing its content to
the cell's surroundings
What is endocytosis?
The process where extracellular materials are captured by vesicles that bus inward from
the plasma membrane and are carried into the cell
True or False: Major secretory pathways lead from the endoplasmic reticulum to
the golgi appartus to the plasma membrane in vesicle transport
True
, True or False: A major endocytyic pathway leads from the plasma membrane to
the ribosomes.
False. To the lyososmes.
True or False: In vesicle transport proteins need to be sorted
True
FITB: _____ are pinched off of an existing membrane with the help of various
proteins that form a coat around it
Vesicles
Proteins needing to be moved have a sequence that allows them to what?
Bind to receptors in the membrane to then be carried along as vesicles pinch off
What are clathrins?
Proteins that assemble under the membrane to form basket-like cages underneath the
membrane
Where do clathrin-coated pits bud off?
The cytoplasmic side of membranes
How are cargo receptors and cargo bound?
Adaptin proteins
FITB: Clathrins bind to ____ and shape the ____ vesicle.
Adaptins..... budding
What is an example of a protein that wraps around the neck of a budding vesicle?
Dynamin
Hydrolysis of what bound to dynamin helps pinch of vesicles?
GTP
